a660d684ed
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@11 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1666 lines
59 KiB
TeX
1666 lines
59 KiB
TeX
\chapter{Functions}\label{functions}
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\setheader{{\it CHAPTER \thechapter}}{}{}{}{}{{\it CHAPTER \thechapter}}%
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\setfooter{\thepage}{}{}{}{}{\thepage}
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The functions defined in wxWindows are described here.
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\section{File functions}\label{filefunctions}
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See also \helpref{wxPathList}{wxpathlist}.
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\membersection{::wxDirExists}
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\func{bool}{wxDirExists}{\param{const wxString\& }{dirname}}
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Returns TRUE if the directory exists.
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\membersection{::wxDos2UnixFilename}
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\func{void}{Dos2UnixFilename}{\param{const wxString\& }{s}}
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Converts a DOS to a UNIX filename by replacing backslashes with forward
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slashes.
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\membersection{::wxFileExists}
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\func{bool}{wxFileExists}{\param{const wxString\& }{filename}}
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Returns TRUE if the file exists.
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\membersection{::wxFileNameFromPath}
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\func{wxString}{wxFileNameFromPath}{\param{const wxString\& }{path}}
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Returns a temporary pointer to the filename for a full path.
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Copy this pointer for long-term use.
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\membersection{::wxFindFirstFile}\label{wxfindfirstfile}
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\func{wxString}{wxFindFirstFile}{\param{const wxString\& }{spec}, \param{int}{ flags = 0}}
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This function does directory searching; returns the first file
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that matches the path {\it spec}, or NULL. Use \helpref{wxFindNextFile}{wxfindnextfile} to
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get the next matching file.
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{\it spec} may contain wildcards.
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{\it flags} is reserved for future use.
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The returned filename is a pointer to static memory so should
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not be freed.
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For example:
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\begin{verbatim}
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wxString f = wxFindFirstFile("/home/project/*.*");
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while (f)
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{
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...
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f = wxFindNextFile();
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}
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\end{verbatim}
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\membersection{::wxFindNextFile}\label{wxfindnextfile}
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\func{wxString}{wxFindFirstFile}{\void}
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Returns the next file that matches the path passed to \helpref{wxFindFirstFile}{wxfindfirstfile}.
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\membersection{::wxIsAbsolutePath}
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\func{bool}{wxIsAbsolutePath}{\param{const wxString\& }{filename}}
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Returns TRUE if the argument is an absolute filename, i.e. with a slash
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or drive name at the beginning.
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\membersection{::wxPathOnly}
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\func{wxString}{wxPathOnly}{\param{const wxString\& }{path}}
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Returns a temporary pointer to the directory part of the filename. Copy this
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pointer for long-term use.
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\membersection{::wxUnix2DosFilename}
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\func{void}{wxUnix2DosFilename}{\param{const wxString\& }{s}}
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Converts a UNIX to a DOS filename by replacing forward
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slashes with backslashes.
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\membersection{::wxConcatFiles}
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\func{bool}{wxConcatFiles}{\param{const wxString\& }{file1}, \param{const wxString\& }{file2},
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\param{const wxString\& }{file3}}
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Concatenates {\it file1} and {\it file2} to {\it file3}, returning
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TRUE if successful.
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\membersection{::wxCopyFile}
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\func{bool}{wxCopyFile}{\param{const wxString\& }{file1}, \param{const wxString\& }{file2}}
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Copies {\it file1} to {\it file2}, returning TRUE if successful.
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\membersection{::wxGetHostName}\label{wxgethostname}
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\func{bool}{wxGetHostName}{\param{const wxString\& }{buf}, \param{int }{sz}}
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Copies the current host machine's name into the supplied buffer.
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Under Windows or NT, this function first looks in the environment
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variable SYSTEM\_NAME; if this is not found, the entry {\bf HostName}\rtfsp
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in the {\bf wxWindows} section of the WIN.INI file is tried.
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Returns TRUE if successful, FALSE otherwise.
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\membersection{::wxGetEmailAddress}\label{wxgetemailaddress}
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\func{bool}{wxGetEmailAddress}{\param{const wxString\& }{buf}, \param{int }{sz}}
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Copies the user's email address into the supplied buffer, by
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concatenating the values returned by \helpref{wxGetHostName}{wxgethostname}\rtfsp
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and \helpref{wxGetUserId}{wxgetuserid}.
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Returns TRUE if successful, FALSE otherwise.
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\membersection{::wxGetUserId}\label{wxgetuserid}
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\func{bool}{wxGetUserId}{\param{const wxString\& }{buf}, \param{int }{sz}}
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Copies the current user id into the supplied buffer.
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Under Windows or NT, this function first looks in the environment
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variables USER and LOGNAME; if neither of these is found, the entry {\bf UserId}\rtfsp
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in the {\bf wxWindows} section of the WIN.INI file is tried.
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Returns TRUE if successful, FALSE otherwise.
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\membersection{::wxGetUserName}\label{wxgetusername}
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\func{bool}{wxGetUserName}{\param{const wxString\& }{buf}, \param{int }{sz}}
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Copies the current user name into the supplied buffer.
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Under Windows or NT, this function looks for the entry {\bf UserName}\rtfsp
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in the {\bf wxWindows} section of the WIN.INI file. If PenWindows
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is running, the entry {\bf Current} in the section {\bf User} of
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the PENWIN.INI file is used.
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Returns TRUE if successful, FALSE otherwise.
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\membersection{::wxGetWorkingDirectory}
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\func{wxString}{wxGetWorkingDirectory}{\param{const wxString\& }{buf=NULL}, \param{int }{sz=1000}}
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Copies the current working directory into the buffer if supplied, or
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copies the working directory into new storage (which you must delete yourself)
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if the buffer is NULL.
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{\it sz} is the size of the buffer if supplied.
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\membersection{::wxGetTempFileName}
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\func{wxString}{wxGetTempFileName}{\param{const wxString\& }{prefix}, \param{const wxString\& }{buf=NULL}}
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Makes a temporary filename based on {\it prefix}, opens and closes the file,
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and places the name in {\it buf}. If {\it buf} is NULL, new store
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is allocated for the temporary filename using {\it new}.
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Under Windows, the filename will include the drive and name of the
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directory allocated for temporary files (usually the contents of the
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TEMP variable). Under UNIX, the {\tt /tmp} directory is used.
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It is the application's responsibility to create and delete the file.
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\membersection{::wxIsWild}\label{wxiswild}
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\func{bool}{wxIsWild}{\param{const wxString\& }{pattern}}
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Returns TRUE if the pattern contains wildcards. See \helpref{wxMatchWild}{wxmatchwild}.
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\membersection{::wxMatchWild}\label{wxmatchwild}
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\func{bool}{wxMatchWild}{\param{const wxString\& }{pattern}, \param{const wxString\& }{text}, \param{bool}{ dot\_special}}
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Returns TRUE if the {\it pattern}\/ matches the {\it text}\/; if {\it
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dot\_special}\/ is TRUE, filenames beginning with a dot are not matched
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with wildcard characters. See \helpref{wxIsWild}{wxiswild}.
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\membersection{::wxMkdir}
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\func{bool}{wxMkdir}{\param{const wxString\& }{dir}}
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Makes the directory {\it dir}, returning TRUE if successful.
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\membersection{::wxRemoveFile}
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\func{bool}{wxRemoveFile}{\param{const wxString\& }{file}}
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Removes {\it file}, returning TRUE if successful.
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\membersection{::wxRenameFile}
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\func{bool}{wxRenameFile}{\param{const wxString\& }{file1}, \param{const wxString\& }{file2}}
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Renames {\it file1} to {\it file2}, returning TRUE if successful.
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\membersection{::wxRmdir}
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\func{bool}{wxRmdir}{\param{const wxString\& }{dir}, \param{int}{ flags=0}}
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Removes the directory {\it dir}, returning TRUE if successful. Does not work under VMS.
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The {\it flags} parameter is reserved for future use.
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\membersection{::wxSetWorkingDirectory}
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\func{bool}{wxSetWorkingDirectory}{\param{const wxString\& }{dir}}
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Sets the current working directory, returning TRUE if the operation succeeded.
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Under MS Windows, the current drive is also changed if {\it dir} contains a drive specification.
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\section{String functions}
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\membersection{::copystring}
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\func{char*}{copystring}{\param{const char* }{s}}
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Makes a copy of the string {\it s} using the C++ new operator, so it can be
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deleted with the {\it delete} operator.
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\membersection{::wxStringMatch}
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\func{bool}{wxStringMatch}{\param{const wxString\& }{s1}, \param{const wxString\& }{s2},\\
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\param{bool}{ subString = TRUE}, \param{bool}{ exact = FALSE}}
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Returns TRUE if the substring {\it s1} is found within {\it s2},
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ignoring case if {\it exact} is FALSE. If {\it subString} is FALSE,
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no substring matching is done.
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\membersection{::wxStringEq}\label{wxstringeq}
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\func{bool}{wxStringEq}{\param{const wxString\& }{s1}, \param{const wxString\& }{s2}}
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A macro defined as:
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\begin{verbatim}
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#define wxStringEq(s1, s2) (s1 && s2 && (strcmp(s1, s2) == 0))
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\end{verbatim}
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\membersection{::wxTransferFileToStream}\label{wxtransferfiletostream}
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\func{bool}{wxTransferFileToStream}{\param{const wxString\& }{filename}, \param{ostream\& }{stream}}
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Copies the given file to {\it stream}. Useful when converting an old application to
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use streams (within the document/view framework, for example).
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Use of this function requires the file wx\_doc.h to be included.
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\membersection{::wxTransferStreamToFile}\label{wxtransferstreamtofile}
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\func{bool}{wxTransferStreamToFile}{\param{istream\& }{stream} \param{const wxString\& }{filename}}
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Copies the given stream to the file {\it filename}. Useful when converting an old application to
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use streams (within the document/view framework, for example).
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Use of this function requires the file wx\_doc.h to be included.
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\section{Dialog functions}\label{dialogfunctions}
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Below are a number of convenience functions for getting input from the
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user or displaying messages. Note that in these functions the last three
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parameters are optional. However, it is recommended to pass a parent frame
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parameter, or (in MS Windows or Motif) the wrong window frame may be brought to
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the front when the dialog box is popped up.
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\membersection{::wxFileSelector}\label{wxfileselector}
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\func{wxString}{wxFileSelector}{\param{const wxString\& }{message}, \param{const wxString\& }{default\_path = NULL},\\
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\param{const wxString\& }{default\_filename = NULL}, \param{const wxString\& }{default\_extension = NULL},\\
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\param{const wxString\& }{wildcard = ``*.*''}, \param{int }{flags = 0}, \param{wxWindow *}{parent = NULL},\\
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\param{int}{ x = -1}, \param{int}{ y = -1}}
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Pops up a file selector box. In Windows, this is the common file selector
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dialog. In X, this is a file selector box with somewhat less functionality.
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The path and filename are distinct elements of a full file pathname.
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If path is NULL, the current directory will be used. If filename is NULL,
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no default filename will be supplied. The wildcard determines what files
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are displayed in the file selector, and file extension supplies a type
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extension for the required filename. Flags may be a combination of wxOPEN,
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wxSAVE, wxOVERWRITE\_PROMPT, wxHIDE\_READONLY, or 0. They are only significant
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at present in Windows.
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Both the X and Windows versions implement a wildcard filter. Typing a
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filename containing wildcards (*, ?) in the filename text item, and
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clicking on Ok, will result in only those files matching the pattern being
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displayed. In the X version, supplying no default name will result in the
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wildcard filter being inserted in the filename text item; the filter is
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ignored if a default name is supplied.
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Under Windows (only), the wildcard may be a specification for multiple
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types of file with a description for each, such as:
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\begin{verbatim}
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"BMP files (*.bmp) | *.bmp | GIF files (*.gif) | *.gif"
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\end{verbatim}
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The application must check for a NULL return value (the user pressed
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Cancel). For example:
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\begin{verbatim}
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const wxString\& s = wxFileSelector("Choose a file to open");
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if (s)
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{
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...
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}
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\end{verbatim}
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Remember that the returned pointer is temporary and should be copied
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if other wxWindows calls will be made before the value is to be used.
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\membersection{::wxGetTextFromUser}\label{wxgettextfromuser}
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\func{wxString}{wxGetTextFromUser}{\param{const wxString\& }{message}, \param{const wxString\& }{caption = ``Input text"},\\
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\param{const wxString\& }{default\_value = ``"}, \param{wxWindow *}{parent = NULL},\\
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\param{int}{ x = -1}, \param{int}{ y = -1}, \param{bool}{ centre = TRUE}}
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Pop up a dialog box with title set to {\it caption}, message {\it message}, and a
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\rtfsp{\it default\_value}. The user may type in text and press OK to return this text,
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or press Cancel to return NULL.
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If {\it centre} is TRUE, the message text (which may include new line characters)
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is centred; if FALSE, the message is left-justified.
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\membersection{::wxGetMultipleChoice}\label{wxgetmultiplechoice}
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\func{int}{wxGetMultipleChoice}{\param{const wxString\& }{message}, \param{const wxString\& }{caption}, \param{int}{ n}, \param{const wxString\& }{choices[]},\\
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\param{int }{nsel}, \param{int *}{selection},
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\param{wxWindow *}{parent = NULL}, \param{int}{ x = -1}, \param{int}{ y = -1},\\
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\param{bool}{ centre = TRUE}, \param{int }{width=150}, \param{int }{height=200}}
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Pops up a dialog box containing a message, OK/Cancel buttons and a multiple-selection
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listbox. The user may choose one or more item(s) and press OK or Cancel.
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The number of initially selected choices, and array of the selected indices,
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are passed in; this array will contain the user selections on exit, with
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the function returning the number of selections. {\it selection} must be
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as big as the number of choices, in case all are selected.
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If Cancel is pressed, -1 is returned.
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{\it choices} is an array of {\it n} strings for the listbox.
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If {\it centre} is TRUE, the message text (which may include new line characters)
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is centred; if FALSE, the message is left-justified.
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\membersection{::wxGetSingleChoice}\label{wxgetsinglechoice}
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\func{wxString}{wxGetSingleChoice}{\param{const wxString\& }{message}, \param{const wxString\& }{caption}, \param{int}{ n}, \param{const wxString\& }{choices[]},\\
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\param{wxWindow *}{parent = NULL}, \param{int}{ x = -1}, \param{int}{ y = -1},\\
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\param{bool}{ centre = TRUE}, \param{int }{width=150}, \param{int }{height=200}}
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Pops up a dialog box containing a message, OK/Cancel buttons and a single-selection
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listbox. The user may choose an item and press OK to return a string or
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Cancel to return NULL.
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{\it choices} is an array of {\it n} strings for the listbox.
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If {\it centre} is TRUE, the message text (which may include new line characters)
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is centred; if FALSE, the message is left-justified.
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\membersection{::wxGetSingleChoiceIndex}\label{wxgetsinglechoiceindex}
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\func{int}{wxGetSingleChoiceIndex}{\param{const wxString\& }{message}, \param{const wxString\& }{caption}, \param{int}{ n}, \param{const wxString\& }{choices[]},\\
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\param{wxWindow *}{parent = NULL}, \param{int}{ x = -1}, \param{int}{ y = -1},\\
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\param{bool}{ centre = TRUE}, \param{int }{width=150}, \param{int }{height=200}}
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As {\bf wxGetSingleChoice} but returns the index representing the selected string.
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If the user pressed cancel, -1 is returned.
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\membersection{::wxGetSingleChoiceData}\label{wxgetsinglechoicedata}
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\func{wxString}{wxGetSingleChoiceData}{\param{const wxString\& }{message}, \param{const wxString\& }{caption}, \param{int}{ n}, \param{const wxString\& }{choices[]},\\
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\param{const wxString\& }{client\_data[]}, \param{wxWindow *}{parent = NULL}, \param{int}{ x = -1},\\
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\param{int}{ y = -1}, \param{bool}{ centre = TRUE}, \param{int }{width=150}, \param{int }{height=200}}
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As {\bf wxGetSingleChoice} but takes an array of client data pointers
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corresponding to the strings, and returns one of these pointers.
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\membersection{::wxMessageBox}\label{wxmessagebox}
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\func{int}{wxMessageBox}{\param{const wxString\& }{message}, \param{const wxString\& }{caption = ``Message"}, \param{int}{ style = wxOK \pipe wxCENTRE},\\
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\param{wxWindow *}{parent = NULL}, \param{int}{ x = -1}, \param{int}{ y = -1}}
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General purpose message dialog. {\it style} may be a bit list of the
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following identifiers:
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\begin{twocollist}\itemsep=0pt
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\twocolitem{wxYES\_NO}{Puts Yes and No buttons on the message box. May be combined with
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wxCANCEL.}
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\twocolitem{wxCANCEL}{Puts a Cancel button on the message box. May be combined with
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wxYES\_NO or wxOK.}
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\twocolitem{wxOK}{Puts an Ok button on the message box. May be combined with wxCANCEL.}
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\twocolitem{wxCENTRE}{Centres the text.}
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\twocolitem{wxICON\_EXCLAMATION}{Under Windows, displays an exclamation mark symbol.}
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\twocolitem{wxICON\_HAND}{Under Windows, displays a hand symbol.}
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\twocolitem{wxICON\_QUESTION}{Under Windows, displays a question mark symbol.}
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\twocolitem{wxICON\_INFORMATION}{Under Windows, displays an information symbol.}
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\end{twocollist}
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The return value is one of: wxYES, wxNO, wxCANCEL, wxOK.
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For example:
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\begin{verbatim}
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...
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int answer = wxMessageBox("Quit program?", "Confirm",
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wxYES_NO | wxCANCEL, main_frame);
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if (answer == wxYES)
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delete main_frame;
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...
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\end{verbatim}
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{\it message} may contain newline characters, in which case the
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message will be split into separate lines, to cater for large messages.
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Under Windows, the native MessageBox function is used unless wxCENTRE
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is specified in the style, in which case a generic function is used.
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This is because the native MessageBox function cannot centre text.
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The symbols are not shown when the generic function is used.
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\section{GDI functions}\label{gdifunctions}
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The following are relevant to the GDI (Graphics Device Interface).
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\membersection{::wxColourDisplay}
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\func{bool}{wxColourDisplay}{\void}
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Returns TRUE if the display is colour, FALSE otherwise.
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\membersection{::wxDisplayDepth}
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\func{int}{wxDisplayDepth}{\void}
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Returns the depth of the display (a value of 1 denotes a monochrome display).
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\membersection{::wxMakeMetaFilePlaceable}\label{wxmakemetafileplaceable}
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\func{bool}{wxMakeMetaFilePlaceable}{\param{const wxString\& }{filename}, \param{int }{minX}, \param{int }{minY},
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\param{int }{maxX}, \param{int }{maxY}, \param{float }{scale=1.0}}
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Given a filename for an existing, valid metafile (as constructed using \helpref{wxMetaFileDC}{wxmetafiledc})
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makes it into a placeable metafile by prepending a header containing the given
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bounding box. The bounding box may be obtained from a device context after drawing
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into it, using the functions wxDC::MinX, wxDC::MinY, wxDC::MaxX and wxDC::MaxY.
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In addition to adding the placeable metafile header, this function adds
|
|
the equivalent of the following code to the start of the metafile data:
|
|
|
|
\begin{verbatim}
|
|
SetMapMode(dc, MM_ANISOTROPIC);
|
|
SetWindowOrg(dc, minX, minY);
|
|
SetWindowExt(dc, maxX - minX, maxY - minY);
|
|
\end{verbatim}
|
|
|
|
This simulates the MM\_TEXT mapping mode, which wxWindows assumes.
|
|
|
|
Placeable metafiles may be imported by many Windows applications, and can be
|
|
used in RTF (Rich Text Format) files.
|
|
|
|
{\it scale} allows the specification of scale for the metafile.
|
|
|
|
This function is only available under Windows.
|
|
|
|
\membersection{::wxSetCursor}\label{wxsetcursor}
|
|
|
|
\func{void}{wxSetCursor}{\param{wxCursor *}{cursor}}
|
|
|
|
Globally sets the cursor; only has an effect in MS Windows.
|
|
See also \helpref{wxCursor}{wxcursor}, \helpref{wxWindow::SetCursor}{wxwindowsetcursor}.
|
|
|
|
\section{System event functions}
|
|
|
|
The wxWindows system event implementation is incomplete and
|
|
experimental, but is intended to be a platform-independent way of
|
|
intercepting and sending events, including defining
|
|
application-specific events and handlers.
|
|
|
|
Ultimately it is intended to be used as a way of testing wxWindows
|
|
applications using scripts, although there are currently
|
|
problems with this (especially with modal dialogs).
|
|
|
|
All this is documented more to provoke comments and suggestions, and
|
|
jog my own memory, rather than to be used, since it has not been
|
|
tested. However {\bf wxSendEvent} will probably work if you
|
|
instantiate the event structure properly for a command event type (see
|
|
the code in {\tt wb\_panel.cpp} for \helpref{wxWindow::OnDefaultAction}{wxwindowondefaultaction}\rtfsp
|
|
which uses {\bf wxSendEvent} to send a command to the default button).
|
|
|
|
\membersection{::wxAddPrimaryEventHandler}
|
|
|
|
\func{bool}{wxAddPrimaryEventHandler}{\param{wxEventHandler}{ handlerFunc}}
|
|
|
|
Add a primary event handler---the normal event handler for this
|
|
event. For built-in events, these would include moving and resizing
|
|
windows. User-defined primary events might include the code to
|
|
select an image in a diagram (which could of course be achieved by a series
|
|
of external events for mouse-clicking, but would be more difficult to specify
|
|
and less robust).
|
|
|
|
Returns TRUE if it succeeds.
|
|
|
|
An event handler takes a pointer to a wxEvent and a boolean flag which is
|
|
TRUE if the event was externally generated, and returns a boolean which is
|
|
TRUE if that event was handled.
|
|
|
|
\membersection{::wxAddSecondaryEventHandler}
|
|
|
|
\func{bool}{wxAddSecondaryEventHandler}{\param{wxEventHandler}{ handlerFunc}, \param{bool}{ pre},\\
|
|
\param{bool}{ override}, \param{bool }{append}}
|
|
|
|
Add a secondary event handler, pre = TRUE iff it should be called before the
|
|
event is executed. override = TRUE iff the handler is allowed to override
|
|
all subsequent events by returning TRUE. Returns TRUE if succeeds.
|
|
|
|
A secondary event handler is an application-defined handler that may
|
|
intercept normal events, possibly overriding them. A primary event handler
|
|
provides the normal behaviour for the event.
|
|
|
|
An event handler takes a pointer to a wxEvent and a boolean flag which is
|
|
TRUE if the event was externally generated, and returns a boolean which is
|
|
TRUE if that event was handled.
|
|
|
|
\membersection{::wxNotifyEvent}
|
|
|
|
\func{bool}{wxNotifyEvent}{\param{wxEvent\&}{ event}, \param{bool}{ pre}}
|
|
|
|
Notify the system of the event you are about to execute/have just
|
|
executed. If TRUE is returned and pre = TRUE, the calling code should
|
|
not execute the event (since it has been intercepted by a handler and
|
|
vetoed).
|
|
|
|
These events are always internal, because they're generated from within
|
|
the main application code.
|
|
|
|
\membersection{::wxRegisterEventClass}
|
|
|
|
\func{void}{wxRegisterEventClass}{\param{WXTYPE}{ eventClassId},\param{WXTYPE}{ superClassId},\\
|
|
\param{wxEventConstructor}{ constructor}, \param{const wxString\& }{description}}
|
|
|
|
Register a new event class (derived from wxEvent), giving the new
|
|
event class type, its superclass, a function for creating a new event
|
|
object of this class, and an optional description.
|
|
|
|
\membersection{::wxRegisterEventName}
|
|
|
|
\func{void}{wxRegisterEventName}{\param{WXTYPE}{ eventTypeId},\param{WXTYPE}{ eventClassId},\\
|
|
\param{const wxString\& }{eventName}}
|
|
|
|
Register the name of the event. This will allow a simple command
|
|
language where giving the event type name and some arguments will
|
|
cause a new event of class {\it eventClassId} to be created, with given
|
|
event type, and some arguments, allows an event to be dynamically
|
|
constructed and sent.
|
|
|
|
\membersection{::wxRegisterExternalEventHandlers}
|
|
|
|
\func{void}{wxRegisterExternalEventHandlers}{\void}
|
|
|
|
Define this and link before wxWindows library to allow registering
|
|
events from `outside' the main application.
|
|
|
|
\membersection{::wxRemoveSecondaryEventHandler}
|
|
|
|
\func{bool}{wxRemoveSecondaryEventHandler}{\param{wxEventHandler}{ handlerFunc}, \param{bool}{ pre}}
|
|
|
|
Remove a secondary event handler. Returns TRUE if it succeeds.
|
|
|
|
\membersection{::wxSendEvent}\label{wxsendevent}
|
|
|
|
\func{bool}{wxSendEvent}{\param{wxEvent\&}{ event}, \param{bool}{ external}}
|
|
|
|
Send an event to the system; usually it will be external, but set
|
|
external to FALSE if calling from within the main application in
|
|
response to other events.
|
|
|
|
Returns TRUE if the event was processed.
|
|
|
|
\section{Printer settings}\label{printersettings}
|
|
|
|
The following functions are used to control PostScript printing. Under
|
|
Windows, PostScript output can only be sent to a file.
|
|
|
|
\membersection{::wxGetPrinterCommand}
|
|
|
|
\func{wxString}{wxGetPrinterCommand}{\void}
|
|
|
|
Gets the printer command used to print a file. The default is {\tt lpr}.
|
|
|
|
\membersection{::wxGetPrinterFile}
|
|
|
|
\func{wxString}{wxGetPrinterFile}{\void}
|
|
|
|
Gets the PostScript output filename.
|
|
|
|
\membersection{::wxGetPrinterMode}
|
|
|
|
\func{int}{wxGetPrinterMode}{\void}
|
|
|
|
Gets the printing mode controlling where output is sent (PS\_PREVIEW, PS\_FILE or PS\_PRINTER).
|
|
The default is PS\_PREVIEW.
|
|
|
|
\membersection{::wxGetPrinterOptions}
|
|
|
|
\func{wxString}{wxGetPrinterOptions}{\void}
|
|
|
|
Gets the additional options for the print command (e.g. specific printer). The default is nothing.
|
|
|
|
\membersection{::wxGetPrinterOrientation}
|
|
|
|
\func{int}{wxGetPrinterOrientation}{\void}
|
|
|
|
Gets the orientation (PS\_PORTRAIT or PS\_LANDSCAPE). The default is PS\_PORTRAIT.
|
|
|
|
\membersection{::wxGetPrinterPreviewCommand}
|
|
|
|
\func{wxString}{wxGetPrinterPreviewCommand}{\void}
|
|
|
|
Gets the command used to view a PostScript file. The default depends on the platform.
|
|
|
|
\membersection{::wxGetPrinterScaling}
|
|
|
|
\func{void}{wxGetPrinterScaling}{\param{float *}{x}, \param{float *}{y}}
|
|
|
|
Gets the scaling factor for PostScript output. The default is 1.0, 1.0.
|
|
|
|
\membersection{::wxGetPrinterTranslation}
|
|
|
|
\func{void}{wxGetPrinterTranslation}{\param{float *}{x}, \param{float *}{y}}
|
|
|
|
Gets the translation (from the top left corner) for PostScript output. The default is 0.0, 0.0.
|
|
|
|
\membersection{::wxSetPrinterCommand}
|
|
|
|
\func{void}{wxSetPrinterCommand}{\param{const wxString\& }{command}}
|
|
|
|
Sets the printer command used to print a file. The default is {\tt lpr}.
|
|
|
|
\membersection{::wxSetPrinterFile}
|
|
|
|
\func{void}{wxSetPrinterFile}{\param{const wxString\& }{filename}}
|
|
|
|
Sets the PostScript output filename.
|
|
|
|
\membersection{::wxSetPrinterMode}
|
|
|
|
\func{void}{wxSetPrinterMode}{\param{int }{mode}}
|
|
|
|
Sets the printing mode controlling where output is sent (PS\_PREVIEW, PS\_FILE or PS\_PRINTER).
|
|
The default is PS\_PREVIEW.
|
|
|
|
\membersection{::wxSetPrinterOptions}
|
|
|
|
\func{void}{wxSetPrinterOptions}{\param{const wxString\& }{options}}
|
|
|
|
Sets the additional options for the print command (e.g. specific printer). The default is nothing.
|
|
|
|
\membersection{::wxSetPrinterOrientation}
|
|
|
|
\func{void}{wxSetPrinterOrientation}{\param{int}{ orientation}}
|
|
|
|
Sets the orientation (PS\_PORTRAIT or PS\_LANDSCAPE). The default is PS\_PORTRAIT.
|
|
|
|
\membersection{::wxSetPrinterPreviewCommand}
|
|
|
|
\func{void}{wxSetPrinterPreviewCommand}{\param{const wxString\& }{command}}
|
|
|
|
Sets the command used to view a PostScript file. The default depends on the platform.
|
|
|
|
\membersection{::wxSetPrinterScaling}
|
|
|
|
\func{void}{wxSetPrinterScaling}{\param{float }{x}, \param{float }{y}}
|
|
|
|
Sets the scaling factor for PostScript output. The default is 1.0, 1.0.
|
|
|
|
\membersection{::wxSetPrinterTranslation}
|
|
|
|
\func{void}{wxSetPrinterTranslation}{\param{float }{x}, \param{float }{y}}
|
|
|
|
Sets the translation (from the top left corner) for PostScript output. The default is 0.0, 0.0.
|
|
|
|
\section{Clipboard functions}\label{clipsboard}
|
|
|
|
These clipboard functions are implemented for Windows only.
|
|
|
|
\membersection{::wxClipboardOpen}
|
|
|
|
\func{bool}{wxClipboardOpen}{\void}
|
|
|
|
Returns TRUE if this application has already opened the clipboard.
|
|
|
|
\membersection{::wxCloseClipboard}
|
|
|
|
\func{bool}{wxCloseClipboard}{\void}
|
|
|
|
Closes the clipboard to allow other applications to use it.
|
|
|
|
\membersection{::wxEmptyClipboard}
|
|
|
|
\func{bool}{wxEmptyClipboard}{\void}
|
|
|
|
Empties the clipboard.
|
|
|
|
\membersection{::wxEnumClipboardFormats}
|
|
|
|
\func{int}{wxEnumClipboardFormats}{\param{int}{dataFormat}}
|
|
|
|
Enumerates the formats found in a list of available formats that belong
|
|
to the clipboard. Each call to this function specifies a known
|
|
available format; the function returns the format that appears next in
|
|
the list.
|
|
|
|
{\it dataFormat} specifies a known format. If this parameter is zero,
|
|
the function returns the first format in the list.
|
|
|
|
The return value specifies the next known clipboard data format if the
|
|
function is successful. It is zero if the {\it dataFormat} parameter specifies
|
|
the last format in the list of available formats, or if the clipboard
|
|
is not open.
|
|
|
|
Before it enumerates the formats function, an application must open the clipboard by using the
|
|
wxOpenClipboard function.
|
|
|
|
\membersection{::wxGetClipboardData}
|
|
|
|
\func{wxObject *}{wxGetClipboardData}{\param{int}{dataFormat}}
|
|
|
|
Gets data from the clipboard.
|
|
|
|
{\it dataFormat} may be one of:
|
|
|
|
\begin{itemize}\itemsep=0pt
|
|
\item wxCF\_TEXT or wxCF\_OEMTEXT: returns a pointer to new memory containing a null-terminated text string.
|
|
\item wxCF\_BITMAP: returns a new wxBitmap.
|
|
\end{itemize}
|
|
|
|
The clipboard must have previously been opened for this call to succeed.
|
|
|
|
\membersection{::wxGetClipboardFormatName}
|
|
|
|
\func{bool}{wxGetClipboardFormatName}{\param{int}{dataFormat}, \param{const wxString\& }{formatName}, \param{int}{maxCount}}
|
|
|
|
Gets the name of a registered clipboard format, and puts it into the buffer {\it formatName} which is of maximum
|
|
length {\it maxCount}. {\it dataFormat} must not specify a predefined clipboard format.
|
|
|
|
\membersection{::wxIsClipboardFormatAvailable}
|
|
|
|
\func{bool}{wxIsClipboardFormatAvailable}{\param{int}{dataFormat}}
|
|
|
|
Returns TRUE if the given data format is available on the clipboard.
|
|
|
|
\membersection{::wxOpenClipboard}
|
|
|
|
\func{bool}{wxOpenClipboard}{\void}
|
|
|
|
Opens the clipboard for passing data to it or getting data from it.
|
|
|
|
\membersection{::wxRegisterClipboardFormat}
|
|
|
|
\func{int}{wxRegisterClipboardFormat}{\param{const wxString\& }{formatName}}
|
|
|
|
Registers the clipboard data format name and returns an identifier.
|
|
|
|
\membersection{::wxSetClipboardData}
|
|
|
|
\func{bool}{wxSetClipboardData}{\param{int}{dataFormat}, \param{wxObject *}{data}, \param{int}{width}, \param{int}{height}}
|
|
|
|
Passes data to the clipboard.
|
|
|
|
{\it dataFormat} may be one of:
|
|
|
|
\begin{itemize}\itemsep=0pt
|
|
\item wxCF\_TEXT or wxCF\_OEMTEXT: {\it data} is a null-terminated text string.
|
|
\item wxCF\_BITMAP: {\it data} is a wxBitmap.
|
|
\item wxCF\_DIB: {\it data} is a wxBitmap. The bitmap is converted to a DIB (device independent bitmap).
|
|
\item wxCF\_METAFILE: {\it data} is a wxMetaFile. {\it width} and {\it height} are used to give recommended dimensions.
|
|
\end{itemize}
|
|
|
|
The clipboard must have previously been opened for this call to succeed.
|
|
|
|
\section{Miscellaneous functions}\label{miscellany}
|
|
|
|
\membersection{::NewId}
|
|
|
|
\func{long}{NewId}{\void}
|
|
|
|
Generates an integer identifier unique to this run of the program.
|
|
|
|
\membersection{::RegisterId}
|
|
|
|
\func{void}{RegisterId}{\param{long}{ id}}
|
|
|
|
Ensures that ids subsequently generated by {\bf NewId} do not clash with
|
|
the given {\bf id}.
|
|
|
|
\membersection{::wxBeginBusyCursor}\label{wxbeginbusycursor}
|
|
|
|
\func{void}{wxBeginBusyCursor}{\param{wxCursor *}{cursor = wxHOURGLASS\_CURSOR}}
|
|
|
|
Changes the cursor to the given cursor for all windows in the application.
|
|
Use \helpref{wxEndBusyCursor}{wxendbusycursor} to revert the cursor back
|
|
to its previous state. These two calls can be nested, and a counter
|
|
ensures that only the outer calls take effect.
|
|
|
|
See also \helpref{wxIsBusy}{wxisbusy}.
|
|
|
|
\membersection{::wxBell}
|
|
|
|
\func{void}{wxBell}{\void}
|
|
|
|
Ring the system bell.
|
|
|
|
\membersection{::wxCleanUp}\label{wxcleanup}
|
|
|
|
\func{void}{wxCleanUp}{\void}
|
|
|
|
Normally, wxWindows will call this cleanup function for you. However, if
|
|
you call \helpref{wxEntry}{wxentry} in order to initialize wxWindows
|
|
manually, then you should also call wxCleanUp before terminating wxWindows,
|
|
if wxWindows does not get a chance to do it.
|
|
|
|
\membersection{::wxCreateDynamicObject}\label{wxcreatedynamicobject}
|
|
|
|
\func{wxObject *}{wxCreateDynamicObject}{\param{const wxString\& }{className}}
|
|
|
|
Creates and returns an object of the given class, if the class has been
|
|
registered with the dynamic class system using DECLARE... and IMPLEMENT... macros.
|
|
|
|
\membersection{::wxDebugMsg}
|
|
|
|
\func{void}{wxDebugMsg}{\param{const wxString\& }{fmt}, \param{...}{}}
|
|
|
|
Display a debugging message; under Windows, this will appear on the
|
|
debugger command window, and under UNIX, it will be written to standard
|
|
error.
|
|
|
|
The syntax is identical to {\bf printf}: pass a format string and a
|
|
variable list of arguments.
|
|
|
|
Note that under Windows, you can see the debugging messages without a
|
|
debugger if you have the DBWIN debug log application that comes with
|
|
Microsoft C++.
|
|
|
|
{\bf Tip:} under Windows, if your application crashes before the
|
|
message appears in the debugging window, put a wxYield call after
|
|
each wxDebugMsg call. wxDebugMsg seems to be broken under WIN32s
|
|
(at least for Watcom C++): preformat your messages and use OutputDebugString
|
|
instead.
|
|
|
|
\membersection{::wxDisplaySize}
|
|
|
|
\func{void}{wxDisplaySize}{\param{int *}{width}, \param{int *}{height}}
|
|
|
|
Gets the physical size of the display in pixels.
|
|
|
|
\membersection{::wxEntry}\label{wxentry}
|
|
|
|
This initializes wxWindows in a platform-dependent way. Use this if you
|
|
are not using the default wxWindows entry code (e.g. main or WinMain). For example,
|
|
you can initialize wxWindows from an Microsoft Foundation Classes application using
|
|
this function. See also \helpref{wxCleanUp}{wxcleanup}.
|
|
|
|
\func{void}{wxEntry}{\param{HANDLE}{ hInstance}, \param{HANDLE}{ hPrevInstance},
|
|
\param{const wxString\& }{commandLine}, \param{int}{ cmdShow}, \param{bool}{ enterLoop = TRUE}}
|
|
|
|
wxWindows initialization under Windows (non-DLL). If {\it enterLoop} is FALSE, the
|
|
function will return immediately after calling wxApp::OnInit. Otherwise, the wxWindows
|
|
message loop will be entered.
|
|
|
|
\func{void}{wxEntry}{\param{HANDLE}{ hInstance}, \param{HANDLE}{ hPrevInstance},
|
|
\param{WORD}{ wDataSegment}, \param{WORD}{ wHeapSize}, \param{const wxString\& }{ commandLine}}
|
|
|
|
wxWindows initialization under Windows (for applications constructed as a DLL).
|
|
|
|
\func{int}{wxEntry}{\param{int}{ argc}, \param{const wxString\& *}{argv}}
|
|
|
|
wxWindows initialization under UNIX.
|
|
|
|
\membersection{::wxError}\label{wxerror}
|
|
|
|
\func{void}{wxError}{\param{const wxString\& }{msg}, \param{const wxString\& }{title = "wxWindows Internal Error"}}
|
|
|
|
Displays {\it msg} and continues. This writes to standard error under
|
|
UNIX, and pops up a message box under Windows. Used for internal
|
|
wxWindows errors. See also \helpref{wxFatalError}{wxfatalerror}.
|
|
|
|
\membersection{::wxEndBusyCursor}\label{wxendbusycursor}
|
|
|
|
\func{void}{wxEndBusyCursor}{\void}
|
|
|
|
Changes the cursor back to the original cursor, for all windows in the application.
|
|
Use with \helpref{wxBeginBusyCursor}{wxbeginbusycursor}.
|
|
|
|
See also \helpref{wxIsBusy}{wxisbusy}.
|
|
|
|
\membersection{::wxExecute}\label{wxexecute}
|
|
|
|
\func{long}{wxExecute}{\param{const wxString\& }{command}, \param{bool }{sync = FALSE}}
|
|
|
|
\func{long}{wxExecute}{\param{const wxString\& *}{argv}, \param{bool }{sync = FALSE}}
|
|
|
|
Executes another program in UNIX or Windows.
|
|
|
|
The first form takes a command string, such as {\tt "emacs file.txt"}.
|
|
|
|
The second form takes an array of values: a command, any number of
|
|
arguments, terminated by NULL.
|
|
|
|
If {\it sync} is FALSE (the default), flow of control immediately returns.
|
|
If TRUE, the current application waits until the other program has terminated.
|
|
|
|
If execution is asynchronous, the return value is the process id,
|
|
otherwise it is a status value. A zero value indicates that the command could not
|
|
be executed.
|
|
|
|
See also \helpref{wxShell}{wxshell}.
|
|
|
|
\membersection{::wxExit}\label{wxexit}
|
|
|
|
\func{void}{wxExit}{\void}
|
|
|
|
Exits application after calling \helpref{wxApp::OnExit}{wxapponexit}.
|
|
Should only be used in an emergency: normally the top-level frame
|
|
should be deleted (after deleting all other frames) to terminate the
|
|
application. See \helpref{wxWindow::OnCloseWindow}{wxwindowonclosewindow} and \helpref{wxApp}{wxapp}.
|
|
|
|
\membersection{::wxFatalError}\label{wxfatalerror}
|
|
|
|
\func{void}{wxFatalError}{\param{const wxString\& }{msg}, \param{const wxString\& }{title = "wxWindows Fatal Error"}}
|
|
|
|
Displays {\it msg} and exits. This writes to standard error under UNIX,
|
|
and pops up a message box under Windows. Used for fatal internal
|
|
wxWindows errors. See also \helpref{wxError}{wxerror}.
|
|
|
|
\membersection{::wxFindMenuItemId}
|
|
|
|
\func{int}{wxFindMenuItemId}{\param{wxFrame *}{frame}, \param{const wxString\& }{menuString}, \param{const wxString\& }{itemString}}
|
|
|
|
Find a menu item identifier associated with the given frame's menu bar.
|
|
|
|
\membersection{::wxFindWindowByLabel}
|
|
|
|
\func{wxWindow *}{wxFindWindowByLabel}{\param{const wxString\& }{label}, \param{wxWindow *}{parent=NULL}}
|
|
|
|
Find a window by its label. Depending on the type of window, the label may be a window title
|
|
or panel item label. If {\it parent} is NULL, the search will start from all top-level
|
|
frames and dialog boxes; if non-NULL, the search will be limited to the given window hierarchy.
|
|
The search is recursive in both cases.
|
|
|
|
\membersection{::wxFindWindowByName}\label{wxfindwindowbyname}
|
|
|
|
\func{wxWindow *}{wxFindWindowByName}{\param{const wxString\& }{name}, \param{wxWindow *}{parent=NULL}}
|
|
|
|
Find a window by its name (as given in a window constructor or {\bf Create} function call).
|
|
If {\it parent} is NULL, the search will start from all top-level
|
|
frames and dialog boxes; if non-NULL, the search will be limited to the given window hierarchy.
|
|
The search is recursive in both cases.
|
|
|
|
If no such named window is found, {\bf wxFindWindowByLabel} is called.
|
|
|
|
\membersection{::wxGetActiveWindow}\label{wxgetactivewindow}
|
|
|
|
\func{wxWindow *}{wxGetActiveWindow}{\void}
|
|
|
|
Gets the currently active window (Windows only).
|
|
|
|
\membersection{::wxGetDisplayName}\label{wxgetdisplayname}
|
|
|
|
\func{wxString}{wxGetDisplayName}{\void}
|
|
|
|
Under X only, returns the current display name. See also \helpref{wxSetDisplayName}{wxsetdisplayname}.
|
|
|
|
\membersection{::wxGetHomeDir}
|
|
|
|
\func{wxString}{wxGetHomeDir}{\param{const wxString\& }{buf}}
|
|
|
|
Fills the buffer with a string representing the user's home directory (UNIX only).
|
|
|
|
\membersection{::wxGetHostName}
|
|
|
|
\func{bool}{wxGetHostName}{\param{const wxString\& }{buf}, \param{int}{ bufSize}}
|
|
|
|
Copies the host name of the machine the program is running on into the
|
|
buffer {\it buf}, of maximum size {\it bufSize}, returning TRUE if
|
|
successful. Under UNIX, this will return a machine name. Under Windows,
|
|
this returns ``windows''.
|
|
|
|
\membersection{::wxGetElapsedTime}\label{wxgetelapsedtime}
|
|
|
|
\func{long}{wxGetElapsedTime}{\param{bool}{ resetTimer = TRUE}}
|
|
|
|
Gets the time in milliseconds since the last \helpref{::wxStartTimer}{wxstarttimer}.
|
|
|
|
If {\it resetTimer} is TRUE (the default), the timer is reset to zero
|
|
by this call.
|
|
|
|
See also \helpref{wxTimer}{wxtimer}.
|
|
|
|
\membersection{::wxGetFreeMemory}
|
|
|
|
\func{long}{wxGetFreeMemory}{\void}
|
|
|
|
Returns the amount of free memory in Kbytes under environments which
|
|
support it, and -1 if not supported. Currently, returns a positive value
|
|
under Windows, and -1 under UNIX.
|
|
|
|
\membersection{::wxGetMousePosition}
|
|
|
|
\func{void}{wxGetMousePosition}{\param{int* }{x}, \param{int* }{y}}
|
|
|
|
Returns the mouse position in screen coordinates.
|
|
|
|
\membersection{::wxGetOsVersion}
|
|
|
|
\func{int}{wxGetOsVersion}{\param{int *}{major = NULL}, \param{int *}{minor = NULL}}
|
|
|
|
Gets operating system version information.
|
|
|
|
\begin{twocollist}\itemsep=0pt
|
|
\twocolitemruled{Platform}{Return tyes}
|
|
\twocolitem{Macintosh}{Return value is wxMACINTOSH.}
|
|
\twocolitem{Motif}{Return value is wxMOTIF\_X, {\it major} is X version, {\it minor} is X revision.}
|
|
\twocolitem{OS/2}{Return value is wxOS2\_PM.}
|
|
\twocolitem{Windows 3.1}{Return value is wxWINDOWS, {\it major} is 3, {\it minor} is 1.}
|
|
\twocolitem{Windows NT}{Return value is wxWINDOWS\_NT, {\it major} is 3, {\it minor} is 1.}
|
|
\twocolitem{Windows 95}{Return value is wxWIN95, {\it major} is 3, {\it minor} is 1.}
|
|
\twocolitem{Win32s (Windows 3.1)}{Return value is wxWIN32S, {\it major} is 3, {\it minor} is 1.}
|
|
\twocolitem{Watcom C++ 386 supervisor mode (Windows 3.1)}{Return value is wxWIN386, {\it major} is 3, {\it minor} is 1.}
|
|
\end{twocollist}
|
|
|
|
\membersection{::wxGetResource}\label{wxgetresource}
|
|
|
|
\func{bool}{wxGetResource}{\param{const wxString\& }{section}, \param{const wxString\& }{entry},
|
|
\param{const wxString\& *}{value}, \param{const wxString\& }{file = NULL}}
|
|
|
|
\func{bool}{wxGetResource}{\param{const wxString\& }{section}, \param{const wxString\& }{entry},
|
|
\param{float *}{value}, \param{const wxString\& }{file = NULL}}
|
|
|
|
\func{bool}{wxGetResource}{\param{const wxString\& }{section}, \param{const wxString\& }{entry},
|
|
\param{long *}{value}, \param{const wxString\& }{file = NULL}}
|
|
|
|
\func{bool}{wxGetResource}{\param{const wxString\& }{section}, \param{const wxString\& }{entry},
|
|
\param{int *}{value}, \param{const wxString\& }{file = NULL}}
|
|
|
|
Gets a resource value from the resource database (for example, WIN.INI, or
|
|
.Xdefaults). If {\it file} is NULL, WIN.INI or .Xdefaults is used,
|
|
otherwise the specified file is used.
|
|
|
|
Under X, if an application class (wxApp::wx\_class) has been defined,
|
|
it is appended to the string /usr/lib/X11/app-defaults/ to try to find
|
|
an applications default file when merging all resource databases.
|
|
|
|
The reason for passing the result in an argument is that it
|
|
can be convenient to define a default value, which gets overridden
|
|
if the value exists in the resource file. It saves a separate
|
|
test for that resource's existence, and it also allows
|
|
the overloading of the function for different types.
|
|
|
|
See also \helpref{wxWriteResource}{wxwriteresource}.
|
|
|
|
\membersection{::wxGetUserId}
|
|
|
|
\func{bool}{wxGetUserId}{\param{const wxString\& }{buf}, \param{int}{ bufSize}}
|
|
|
|
Copies the user's login identity (such as ``jacs'') into the buffer {\it
|
|
buf}, of maximum size {\it bufSize}, returning TRUE if successful.
|
|
Under Windows, this returns ``user''.
|
|
|
|
\membersection{::wxGetUserName}
|
|
|
|
\func{bool}{wxGetUserName}{\param{const wxString\& }{buf}, \param{int}{ bufSize}}
|
|
|
|
Copies the user's name (such as ``Julian Smart'') into the buffer {\it
|
|
buf}, of maximum size {\it bufSize}, returning TRUE if successful.
|
|
Under Windows, this returns ``unknown''.
|
|
|
|
\membersection{::wxKill}\label{wxkill}
|
|
|
|
\func{int}{wxKill}{\param{long}{ pid}, \param{int}{ sig}}
|
|
|
|
Under UNIX (the only supported platform), equivalent to the UNIX kill function.
|
|
Returns 0 on success, -1 on failure.
|
|
|
|
Tip: sending a signal of 0 to a process returns -1 if the process does not exist.
|
|
It does not raise a signal in the receiving process.
|
|
|
|
\membersection{::wxInitClipboard}\label{wxinitclipboard}
|
|
|
|
\func{void}{wxInitClipboard}{\void}
|
|
|
|
Initializes the generic clipboard system by creating an instance of
|
|
the class \helpref{wxClipboard}{wxclipboard}.
|
|
|
|
\membersection{::wxIPCCleanUp}\label{wxipccleanup}
|
|
|
|
\func{void}{wxIPCCleanUp}{\void}
|
|
|
|
Call this when your application is terminating, if you have
|
|
called \helpref{wxIPCInitialize}{wxipcinitialize}.
|
|
|
|
\membersection{::wxIPCInitialize}\label{wxipcinitialize}
|
|
|
|
\func{void}{wxIPCInitialize}{\void}
|
|
|
|
Initializes for interprocess communication operation. May
|
|
be called multiple times without harm.
|
|
|
|
See also \helpref{wxDDEServer}{wxddeserver}, \helpref{wxDDEClient}{wxddeclient}, \helpref{wxDDEConnection}{wxddeconnection}
|
|
and the relevant section of the user manual.
|
|
|
|
\membersection{::wxIsBusy}\label{wxisbusy}
|
|
|
|
\func{bool}{wxIsBusy}{\void}
|
|
|
|
Returns TRUE if between two \helpref{wxBeginBusyCursor}{wxbeginbusycursor} and\rtfsp
|
|
\helpref{wxEndBusyCursor}{wxendbusycursor} calls.
|
|
|
|
\membersection{::wxLoadUserResource}\label{wxloaduserresource}
|
|
|
|
\func{wxString}{wxLoadUserResource}{\param{const wxString\& }{resourceName}, \param{const wxString\& }{resourceType=``TEXT"}}
|
|
|
|
Loads a user-defined Windows resource as a string. If the resource is found, the function creates
|
|
a new character array and copies the data into it. A pointer to this data is returned. If unsuccessful, NULL is returned.
|
|
|
|
The resource must be defined in the {\tt .rc} file using the following syntax:
|
|
|
|
\begin{verbatim}
|
|
myResource TEXT file.ext
|
|
\end{verbatim}
|
|
|
|
where {\tt file.ext} is a file that the resource compiler can find.
|
|
|
|
One use of this is to store {\tt .wxr} files instead of including the data in the C++ file; some compilers
|
|
cannot cope with the long strings in a {\tt .wxr} file. The resource data can then be parsed
|
|
using \helpref{wxResourceParseString}{wxresourceparsestring}.
|
|
|
|
This function is available under Windows only.
|
|
|
|
\membersection{::wxNow}\label{wxnow}
|
|
|
|
\func{wxString}{wxNow}{\void}
|
|
|
|
Returns a string representing the current date and time.
|
|
|
|
\membersection{::wxPostDelete}\label{wxpostdelete}
|
|
|
|
\func{void}{wxPostDelete}{\param{wxObject *}{object}}
|
|
|
|
Under X, tells the system to delete the specified object when
|
|
all other events have been processed. In some environments, it is
|
|
necessary to use this instead of deleting a frame directly with the
|
|
delete operator, because X will still send events to the window.
|
|
|
|
Now obsolete: use \helpref{wxWindow::Close}{wxwindowclose} instead.
|
|
|
|
\membersection{::wxSetDisplayName}\label{wxsetdisplayname}
|
|
|
|
\func{void}{wxSetDisplayName}{\param{const wxString\& }{displayName}}
|
|
|
|
Under X only, sets the current display name. This is the X host and display name such
|
|
as ``colonsay:0.0", and the function indicates which display should be used for creating
|
|
windows from this point on. Setting the display within an application allows multiple
|
|
displays to be used.
|
|
|
|
See also \helpref{wxGetDisplayName}{wxgetdisplayname}.
|
|
|
|
\membersection{::wxShell}\label{wxshell}
|
|
|
|
\func{bool}{wxShell}{\param{const wxString\& }{command = NULL}}
|
|
|
|
Executes a command in an interactive shell window. If no command is
|
|
specified, then just the shell is spawned.
|
|
|
|
See also \helpref{wxExecute}{wxexecute}.
|
|
|
|
\membersection{::wxSleep}
|
|
|
|
\func{void}{wxSleep}{\param{int}{ secs}}
|
|
|
|
Under X, sleeps for the specified number of seconds.
|
|
|
|
\membersection{::wxStripMenuCodes}
|
|
|
|
\func{void}{wxStripMenuCodes}{\param{const wxString\& }{in}, \param{const wxString\& }{out}}
|
|
|
|
Strips any menu codes from {\it in} and places the result
|
|
in {\it out}. Menu codes include \& (mark the next character with an underline
|
|
as a keyboard shortkey in Windows and Motif) and $\backslash$t (tab in Windows).
|
|
|
|
\membersection{::wxStartTimer}\label{wxstarttimer}
|
|
|
|
\func{void}{wxStartTimer}{\void}
|
|
|
|
Starts a stopwatch; use \helpref{::wxGetElapsedTime}{wxgetelapsedtime} to get the elapsed time.
|
|
|
|
See also \helpref{wxTimer}{wxtimer}.
|
|
|
|
\membersection{::wxToLower}\label{wxtolower}
|
|
|
|
\func{char}{wxToLower}{\param{char }{ch}}
|
|
|
|
Converts the character to lower case. This is implemented as a macro for efficiency.
|
|
|
|
\membersection{::wxToUpper}\label{wxtoupper}
|
|
|
|
\func{char}{wxToUpper}{\param{char }{ch}}
|
|
|
|
Converts the character to upper case. This is implemented as a macro for efficiency.
|
|
|
|
\membersection{::wxTrace}\label{wxtrace}
|
|
|
|
\func{void}{wxTrace}{\param{const wxString\& }{fmt}, \param{...}{}}
|
|
|
|
Takes printf-style variable argument syntax. Output
|
|
is directed to the current output stream (see \helpref{wxDebugContext}{wxdebugcontextoverview}).
|
|
|
|
\membersection{::wxTraceLevel}\label{wxtracelevel}
|
|
|
|
\func{void}{wxTraceLevel}{\param{int}{ level}, \param{const wxString\& }{fmt}, \param{...}{}}
|
|
|
|
Takes printf-style variable argument syntax. Output
|
|
is directed to the current output stream (see \helpref{wxDebugContext}{wxdebugcontextoverview}).
|
|
The first argument should be the level at which this information is appropriate.
|
|
It will only be output if the level returned by wxDebugContext::GetLevel is equal to or greater than
|
|
this value.
|
|
|
|
\membersection{::wxWriteResource}\label{wxwriteresource}
|
|
|
|
\func{bool}{wxWriteResource}{\param{const wxString\& }{section}, \param{const wxString\& }{entry},
|
|
\param{const wxString\& }{value}, \param{const wxString\& }{file = NULL}}
|
|
|
|
\func{bool}{wxWriteResource}{\param{const wxString\& }{section}, \param{const wxString\& }{entry},
|
|
\param{float }{value}, \param{const wxString\& }{file = NULL}}
|
|
|
|
\func{bool}{wxWriteResource}{\param{const wxString\& }{section}, \param{const wxString\& }{entry},
|
|
\param{long }{value}, \param{const wxString\& }{file = NULL}}
|
|
|
|
\func{bool}{wxWriteResource}{\param{const wxString\& }{section}, \param{const wxString\& }{entry},
|
|
\param{int }{value}, \param{const wxString\& }{file = NULL}}
|
|
|
|
Writes a resource value into the resource database (for example, WIN.INI, or
|
|
.Xdefaults). If {\it file} is NULL, WIN.INI or .Xdefaults is used,
|
|
otherwise the specified file is used.
|
|
|
|
Under X, the resource databases are cached until the internal function
|
|
\rtfsp{\bf wxFlushResources} is called automatically on exit, when
|
|
all updated resource databases are written to their files.
|
|
|
|
Note that it is considered bad manners to write to the .Xdefaults
|
|
file under UNIX, although the WIN.INI file is fair game under Windows.
|
|
|
|
See also \helpref{wxGetResource}{wxgetresource}.
|
|
|
|
\membersection{::wxYield}
|
|
|
|
\func{bool}{wxYield}{\void}
|
|
|
|
Yields control to pending messages in the windowing system. This can be useful, for example, when a
|
|
time-consuming process writes to a text window. Without an occasional
|
|
yield, the text window will not be updated properly, and (since Windows
|
|
multitasking is cooperative) other processes will not respond.
|
|
|
|
Caution should be exercised, however, since yielding may allow the
|
|
user to perform actions which are not compatible with the current task.
|
|
Disabling menu items or whole menus during processing can avoid unwanted
|
|
reentrance of code.
|
|
|
|
\section{Macros}\label{macros}
|
|
|
|
These macros are defined in wxWindows.
|
|
|
|
\membersection{CLASSINFO}\label{classinfo}
|
|
|
|
\func{wxClassInfo *}{CLASSINFO}{className}
|
|
|
|
Returns a pointer to the wxClassInfo object associated with this class.
|
|
|
|
\membersection{WXDEBUG\_NEW}\label{debugnew}
|
|
|
|
\func{}{WXDEBUG\_NEW}{arg}
|
|
|
|
This is defined in debug mode to be call the redefined new operator
|
|
with filename and line number arguments. The definition is:
|
|
|
|
\begin{verbatim}
|
|
#define WXDEBUG_NEW new(__FILE__,__LINE__)
|
|
\end{verbatim}
|
|
|
|
In non-debug mode, this is defined as the normal new operator.
|
|
|
|
\membersection{DECLARE\_ABSTRACT\_CLASS}
|
|
|
|
\func{}{DECLARE\_ABSTRACT\_CLASS}{className}
|
|
|
|
Used inside a class declaration to declare that the class should be
|
|
made known to the class hierarchy, but objects of this class cannot be created
|
|
dynamically. The same as DECLARE\_CLASS.
|
|
|
|
Example:
|
|
|
|
\begin{verbatim}
|
|
class wxCommand: public wxObject
|
|
{
|
|
DECLARE_ABSTRACT_CLASS(wxCommand)
|
|
|
|
private:
|
|
...
|
|
public:
|
|
...
|
|
};
|
|
\end{verbatim}
|
|
|
|
\membersection{DECLARE\_APP}\label{declareapp}
|
|
|
|
\func{}{DECLARE\_APP}{className}
|
|
|
|
This is used in headers to create a forward declaration of the wxGetApp function implemented
|
|
by IMPLEMENT\_APP. It creates the declaration {\tt className\& wxGetApp(void)}.
|
|
|
|
Example:
|
|
|
|
\begin{verbatim}
|
|
DECLARE_APP(MyApp)
|
|
\end{verbatim}
|
|
|
|
\membersection{DECLARE\_CLASS}
|
|
|
|
\func{}{DECLARE\_CLASS}{className}
|
|
|
|
Used inside a class declaration to declare that the class should be
|
|
made known to the class hierarchy, but objects of this class cannot be created
|
|
dynamically. The same as DECLARE\_ABSTRACT\_CLASS.
|
|
|
|
\membersection{DECLARE\_DYNAMIC\_CLASS}
|
|
|
|
\func{}{DECLARE\_DYNAMIC\_CLASS}{className}
|
|
|
|
Used inside a class declaration to declare that the objects of this class should be dynamically
|
|
createable from run-time type information.
|
|
|
|
Example:
|
|
|
|
\begin{verbatim}
|
|
class wxFrame: public wxWindow
|
|
{
|
|
DECLARE_DYNAMIC_CLASS(wxFrame)
|
|
|
|
private:
|
|
const wxString\& frameTitle;
|
|
public:
|
|
...
|
|
};
|
|
\end{verbatim}
|
|
|
|
\membersection{IMPLEMENT\_ABSTRACT\_CLASS}
|
|
|
|
\func{}{IMPLEMENT\_ABSTRACT\_CLASS}{className, baseClassName}
|
|
|
|
Used in a C++ implementation file to complete the declaration of
|
|
a class that has run-time type information. The same as IMPLEMENT\_CLASS.
|
|
|
|
Example:
|
|
|
|
\begin{verbatim}
|
|
IMPLEMENT_ABSTRACT_CLASS(wxCommand, wxObject)
|
|
|
|
wxCommand::wxCommand(void)
|
|
{
|
|
...
|
|
}
|
|
\end{verbatim}
|
|
|
|
\membersection{IMPLEMENT\_ABSTRACT\_CLASS2}
|
|
|
|
\func{}{IMPLEMENT\_ABSTRACT\_CLASS2}{className, baseClassName1, baseClassName2}
|
|
|
|
Used in a C++ implementation file to complete the declaration of
|
|
a class that has run-time type information and two base classes. The same as IMPLEMENT\_CLASS2.
|
|
|
|
\membersection{IMPLEMENT\_APP}\label{implementapp}
|
|
|
|
\func{}{IMPLEMENT\_APP}{className}
|
|
|
|
This is used in the application class implementation file to make the application class known to
|
|
wxWindows for dynamic construction. You use this instead of
|
|
|
|
Old form:
|
|
|
|
\begin{verbatim}
|
|
MyApp myApp;
|
|
\end{verbatim}
|
|
|
|
New form:
|
|
|
|
\begin{verbatim}
|
|
IMPLEMENT_APP(MyApp)
|
|
\end{verbatim}
|
|
|
|
See also \helpref{DECLARE\_APP}{declareapp}.
|
|
|
|
\membersection{IMPLEMENT\_CLASS}
|
|
|
|
\func{}{IMPLEMENT\_CLASS}{className, baseClassName}
|
|
|
|
Used in a C++ implementation file to complete the declaration of
|
|
a class that has run-time type information. The same as IMPLEMENT\_ABSTRACT\_CLASS.
|
|
|
|
\membersection{IMPLEMENT\_CLASS2}
|
|
|
|
\func{}{IMPLEMENT\_CLASS2}{className, baseClassName1, baseClassName2}
|
|
|
|
Used in a C++ implementation file to complete the declaration of a
|
|
class that has run-time type information and two base classes. The
|
|
same as IMPLEMENT\_ABSTRACT\_CLASS2.
|
|
|
|
\membersection{IMPLEMENT\_DYNAMIC\_CLASS}
|
|
|
|
\func{}{IMPLEMENT\_DYNAMIC\_CLASS}{className, baseClassName}
|
|
|
|
Used in a C++ implementation file to complete the declaration of
|
|
a class that has run-time type information, and whose instances
|
|
can be created dynamically.
|
|
|
|
Example:
|
|
|
|
\begin{verbatim}
|
|
IMPLEMENT_DYNAMIC_CLASS(wxFrame, wxWindow)
|
|
|
|
wxFrame::wxFrame(void)
|
|
{
|
|
...
|
|
}
|
|
\end{verbatim}
|
|
|
|
\membersection{IMPLEMENT\_DYNAMIC\_CLASS2}
|
|
|
|
\func{}{IMPLEMENT\_DYNAMIC\_CLASS2}{className, baseClassName1, baseClassName2}
|
|
|
|
Used in a C++ implementation file to complete the declaration of
|
|
a class that has run-time type information, and whose instances
|
|
can be created dynamically. Use this for classes derived from two
|
|
base classes.
|
|
|
|
\membersection{WXTRACE}\label{trace}
|
|
|
|
\func{}{WXTRACE}{formatString, ...}
|
|
|
|
Calls wxTrace with printf-style variable argument syntax. Output
|
|
is directed to the current output stream (see \helpref{wxDebugContext}{wxdebugcontextoverview}).
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\membersection{WXTRACELEVEL}\label{tracelevel}
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|
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\func{}{WXTRACELEVEL}{level, formatString, ...}
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|
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|
Calls wxTraceLevel with printf-style variable argument syntax. Output
|
|
is directed to the current output stream (see \helpref{wxDebugContext}{wxdebugcontextoverview}).
|
|
The first argument should be the level at which this information is appropriate.
|
|
It will only be output if the level returned by wxDebugContext::GetLevel is equal to or greater than
|
|
this value.
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|
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|
\section{wxWindows resource functions}\label{resourcefuncs}
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|
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|
\overview{wxWindows resource system}{resourceformats}
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|
|
|
This section details functions for manipulating wxWindows (.WXR) resource
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|
files and loading user interface elements from resources.
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|
|
|
\normalbox{Please note that this use of the word `resource' is different from that used when talking
|
|
about initialisation file resource reading and writing, using such functions
|
|
as wxWriteResource and wxGetResource. It's just an unfortunate clash of terminology.}
|
|
|
|
\helponly{For an overview of the wxWindows resource mechanism, see \helpref{the wxWindows resource system}{resourceformats}.}
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|
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|
See also \helpref{wxWindow::LoadFromResource}{wxwindowloadfromresource} for
|
|
loading from resource data.
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|
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|
\membersection{::wxResourceAddIdentifier}\label{wxresourceaddidentifier}
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|
|
|
\func{bool}{wxResourceAddIdentifier}{\param{const wxString\& }{name}, \param{int }{value}}
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|
|
|
Used for associating a name with an integer identifier (equivalent to dynamically\rtfsp
|
|
\verb$#$defining a name to an integer). Unlikely to be used by an application except
|
|
perhaps for implementing resource functionality for interpreted languages.
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|
|
|
\membersection{::wxResourceClear}
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|
|
|
\func{void}{wxResourceClear}{\void}
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|
|
|
Clears the wxWindows resource table.
|
|
|
|
\membersection{::wxResourceCreateBitmap}
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|
|
|
\func{wxBitmap *}{wxResourceCreateBitmap}{\param{const wxString\& }{resource}}
|
|
|
|
Creates a new bitmap from a file, static data, or Windows resource, given a valid
|
|
wxWindows bitmap resource identifier. For example, if the .WXR file contains
|
|
the following:
|
|
|
|
\begin{verbatim}
|
|
static const wxString\& aiai_resource = "bitmap(name = 'aiai_resource',\
|
|
bitmap = ['aiai', wxBITMAP_TYPE_BMP_RESOURCE, 'WINDOWS'],\
|
|
bitmap = ['aiai.xpm', wxBITMAP_TYPE_XPM, 'X']).";
|
|
\end{verbatim}
|
|
|
|
then this function can be called as follows:
|
|
|
|
\begin{verbatim}
|
|
wxBitmap *bitmap = wxResourceCreateBitmap("aiai_resource");
|
|
\end{verbatim}
|
|
|
|
\membersection{::wxResourceCreateIcon}
|
|
|
|
\func{wxIcon *}{wxResourceCreateIcon}{\param{const wxString\& }{resource}}
|
|
|
|
Creates a new icon from a file, static data, or Windows resource, given a valid
|
|
wxWindows icon resource identifier. For example, if the .WXR file contains
|
|
the following:
|
|
|
|
\begin{verbatim}
|
|
static const wxString\& aiai_resource = "icon(name = 'aiai_resource',\
|
|
icon = ['aiai', wxBITMAP_TYPE_ICO_RESOURCE, 'WINDOWS'],\
|
|
icon = ['aiai', wxBITMAP_TYPE_XBM_DATA, 'X']).";
|
|
\end{verbatim}
|
|
|
|
then this function can be called as follows:
|
|
|
|
\begin{verbatim}
|
|
wxIcon *icon = wxResourceCreateIcon("aiai_resource");
|
|
\end{verbatim}
|
|
|
|
\membersection{::wxResourceCreateMenuBar}
|
|
|
|
\func{wxMenuBar *}{wxResourceCreateMenuBar}{\param{const wxString\& }{resource}}
|
|
|
|
Creates a new menu bar given a valid wxWindows menubar resource
|
|
identifier. For example, if the .WXR file contains the following:
|
|
|
|
\begin{verbatim}
|
|
static const wxString\& menuBar11 = "menu(name = 'menuBar11',\
|
|
menu = \
|
|
[\
|
|
['&File', 1, '', \
|
|
['&Open File', 2, 'Open a file'],\
|
|
['&Save File', 3, 'Save a file'],\
|
|
[],\
|
|
['E&xit', 4, 'Exit program']\
|
|
],\
|
|
['&Help', 5, '', \
|
|
['&About', 6, 'About this program']\
|
|
]\
|
|
]).";
|
|
\end{verbatim}
|
|
|
|
then this function can be called as follows:
|
|
|
|
\begin{verbatim}
|
|
wxMenuBar *menuBar = wxResourceCreateMenuBar("menuBar11");
|
|
\end{verbatim}
|
|
|
|
|
|
\membersection{::wxResourceGetIdentifier}
|
|
|
|
\func{int}{wxResourceGetIdentifier}{\param{const wxString\& }{name}}
|
|
|
|
Used for retrieving the integer value associated with an identifier.
|
|
A zero value indicates that the identifier was not found.
|
|
|
|
See \helpref{wxResourceAddIdentifier}{wxresourceaddidentifier}.
|
|
|
|
\membersection{::wxResourceParseData}\label{wxresourcedata}
|
|
|
|
\func{bool}{wxResourceParseData}{\param{const wxString\& }{resource}, \param{wxResourceTable *}{table = NULL}}
|
|
|
|
Parses a string containing one or more wxWindows resource objects. If
|
|
the resource objects are global static data that are included into the
|
|
C++ program, then this function must be called for each variable
|
|
containing the resource data, to make it known to wxWindows.
|
|
|
|
{\it resource} should contain data in the following form:
|
|
|
|
\begin{verbatim}
|
|
dialog(name = 'dialog1',
|
|
style = 'wxCAPTION | wxDEFAULT_DIALOG_STYLE',
|
|
title = 'Test dialog box',
|
|
x = 312, y = 234, width = 400, height = 300,
|
|
modal = 0,
|
|
control = [wxGroupBox, 'Groupbox', '0', 'group6', 5, 4, 380, 262,
|
|
[11, 'wxSWISS', 'wxNORMAL', 'wxNORMAL', 0]],
|
|
control = [wxMultiText, 'Multitext', 'wxVERTICAL_LABEL', 'multitext3',
|
|
156, 126, 200, 70, 'wxWindows is a multi-platform, GUI toolkit.',
|
|
[11, 'wxSWISS', 'wxNORMAL', 'wxNORMAL', 0],
|
|
[11, 'wxSWISS', 'wxNORMAL', 'wxNORMAL', 0]]).
|
|
\end{verbatim}
|
|
|
|
This function will typically be used after including a {\tt .wxr} file into
|
|
a C++ program as follows:
|
|
|
|
\begin{verbatim}
|
|
#include "dialog1.wxr"
|
|
\end{verbatim}
|
|
|
|
Each of the contained resources will declare a new C++ variable, and each
|
|
of these variables should be passed to wxResourceParseData.
|
|
|
|
\membersection{::wxResourceParseFile}
|
|
|
|
\func{bool}{wxResourceParseFile}{\param{const wxString\& }{filename}, \param{wxResourceTable *}{table = NULL}}
|
|
|
|
Parses a file containing one or more wxWindows resource objects
|
|
in C++-compatible syntax. Use this function to dynamically load
|
|
wxWindows resource data.
|
|
|
|
\membersection{::wxResourceParseString}\label{wxresourceparsestring}
|
|
|
|
\func{bool}{wxResourceParseString}{\param{const wxString\& }{resource}, \param{wxResourceTable *}{table = NULL}}
|
|
|
|
Parses a string containing one or more wxWindows resource objects. If
|
|
the resource objects are global static data that are included into the
|
|
C++ program, then this function must be called for each variable
|
|
containing the resource data, to make it known to wxWindows.
|
|
|
|
{\it resource} should contain data with the following form:
|
|
|
|
\begin{verbatim}
|
|
static const wxString\& dialog1 = "dialog(name = 'dialog1',\
|
|
style = 'wxCAPTION | wxDEFAULT_DIALOG_STYLE',\
|
|
title = 'Test dialog box',\
|
|
x = 312, y = 234, width = 400, height = 300,\
|
|
modal = 0,\
|
|
control = [wxGroupBox, 'Groupbox', '0', 'group6', 5, 4, 380, 262,\
|
|
[11, 'wxSWISS', 'wxNORMAL', 'wxNORMAL', 0]],\
|
|
control = [wxMultiText, 'Multitext', 'wxVERTICAL_LABEL', 'multitext3',\
|
|
156, 126, 200, 70, 'wxWindows is a multi-platform, GUI toolkit.',\
|
|
[11, 'wxSWISS', 'wxNORMAL', 'wxNORMAL', 0],\
|
|
[11, 'wxSWISS', 'wxNORMAL', 'wxNORMAL', 0]]).";
|
|
\end{verbatim}
|
|
|
|
This function will typically be used after calling \helpref{wxLoadUserResource}{wxloaduserresource} to
|
|
load an entire {\tt .wxr file} into a string.
|
|
|
|
\membersection{::wxResourceRegisterBitmapData}\label{registerbitmapdata}
|
|
|
|
\func{bool}{wxResourceRegisterBitmapData}{\param{const wxString\& }{name}, \param{const wxString\& }{xbm\_data}, \param{int }{width},
|
|
\param{int }{height}, \param{wxResourceTable *}{table = NULL}}
|
|
|
|
\func{bool}{wxResourceRegisterBitmapData}{\param{const wxString\& }{name}, \param{const wxString\& *}{xpm\_data}}
|
|
|
|
Makes \verb$#$included XBM or XPM bitmap data known to the wxWindows resource system.
|
|
This is required if other resources will use the bitmap data, since otherwise there
|
|
is no connection between names used in resources, and the global bitmap data.
|
|
|
|
\membersection{::wxResourceRegisterIconData}
|
|
|
|
Another name for \helpref{wxResourceRegisterBitmapData}{registerbitmapdata}.
|
|
|