wxWidgets/docs/latex/wx/choice.tex
Robert Roebling 9c8849722a Doc updates, wxsizer et al
wxFileDialog displays current dir now,
 wxTipProvider uses statictext for headline
 messagebox (and other) dialogs now always display
   an OK buttons, unless wxYES_NO is given
 Appending a menu to a menu bar after having called
   wxFrame::SetMenuBar() should now work
 Added test to configure so that it correctly sets
  compiler flags etc if GCC is used on Solaris and
  IRIX instead of CC, also changed default shared
  library create to GCC from G++ on some platforms
  (as previously already Linux)


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@3429 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1999-08-19 18:41:41 +00:00

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TeX

\section{\class{wxChoice}}\label{wxchoice}
A choice item is used to select one of a list of strings. Unlike a
listbox, only the selection is visible until the user pulls down the
menu of choices.
\wxheading{Derived from}
\helpref{wxControl}{wxcontrol}\\
\helpref{wxWindow}{wxwindow}\\
\helpref{wxEvtHandler}{wxevthandler}\\
\helpref{wxObject}{wxobject}
\wxheading{Include files}
<wx/choice.h>
\wxheading{Window styles}
There are no special styles for wxChoice.
See also \helpref{window styles overview}{windowstyles}.
\wxheading{Event handling}
\twocolwidtha{7cm}
\begin{twocollist}\itemsep=0pt
\twocolitem{{\bf EVT\_CHOICE(id, func)}}{Process a wxEVT\_COMMAND\_CHOICE\_SELECTED event,
when an item on the list is selected.}
\end{twocollist}
\wxheading{See also}
\helpref{wxListBox}{wxlistbox}, \helpref{wxComboBox}{wxcombobox},
\rtfsp\helpref{wxCommandEvent}{wxcommandevent}
\latexignore{\rtfignore{\wxheading{Members}}}
\membersection{wxChoice::wxChoice}\label{wxchoiceconstr}
\func{}{wxChoice}{\void}
Default constructor.
\func{}{wxChoice}{\param{wxWindow *}{parent}, \param{wxWindowID}{ id},\rtfsp
\param{const wxPoint\& }{pos}, \param{const wxSize\&}{ size},\rtfsp
\param{int}{ n}, \param{const wxString }{choices[]},\rtfsp
\param{long}{ style = 0}, \param{const wxValidator\& }{validator = wxDefaultValidator}, \param{const wxString\& }{name = ``choice"}}
Constructor, creating and showing a choice.
\wxheading{Parameters}
\docparam{parent}{Parent window. Must not be NULL.}
\docparam{id}{Window identifier. A value of -1 indicates a default value.}
\docparam{pos}{Window position.}
\docparam{size}{Window size. If the default size (-1, -1) is specified then the choice is sized
appropriately.}
\docparam{n}{Number of strings with which to initialise the choice control.}
\docparam{choices}{An array of strings with which to initialise the choice control.}
\docparam{style}{Window style. See \helpref{wxChoice}{wxchoice}.}
\docparam{validator}{Window validator.}
\docparam{name}{Window name.}
\wxheading{See also}
\helpref{wxChoice::Create}{wxchoicecreate}, \helpref{wxValidator}{wxvalidator}
\pythonnote{The wxChoice constructor in wxPython reduces the \tt{n}
and \tt{choices} arguments are to a single argument, which is
a list of strings.}
\membersection{wxChoice::\destruct{wxChoice}}
\func{}{\destruct{wxChoice}}{\void}
Destructor, destroying the choice item.
\membersection{wxChoice::Append}\label{wxchoiceappend}
\func{void}{Append}{\param{const wxString\& }{ item}}
Adds the item to the end of the choice control.
\func{void}{Append}{\param{const wxString\& }{ item}, \param{void* }{clientData}}
Adds the item to the end of the combobox, associating the given data
with the item.
\wxheading{Parameters}
\docparam{item}{String to add.}
\docparam{clientData}{Client data to associate with the item.}
\membersection{wxChoice::Clear}\label{wxchoiceclear}
\func{void}{Clear}{\void}
Clears the strings from the choice item.
\membersection{wxChoice::Create}\label{wxchoicecreate}
\func{bool}{Create}{\param{wxWindow *}{parent}, \param{wxWindowID}{ id},\rtfsp
\param{const wxPoint\& }{pos}, \param{const wxSize\&}{ size},\rtfsp
\param{int}{ n}, \param{const wxString }{choices[]},\rtfsp
\param{long}{ style = 0}, \param{const wxString\& }{name = ``choice"}}
Creates the choice for two-step construction. See \helpref{wxChoice::wxChoice}{wxchoiceconstr}.
\membersection{wxChoice::FindString}\label{wxchoicefindstring}
\constfunc{int}{FindString}{\param{const wxString\& }{string}}
Finds a choice matching the given string.
\wxheading{Parameters}
\docparam{string}{String to find.}
\wxheading{Return value}
Returns the position if found, or -1 if not found.
\membersection{wxChoice::GetColumns}\label{wxchoicegetcolumns}
\constfunc{int}{GetColumns}{\void}
Gets the number of columns in this choice item.
\wxheading{Remarks}
This is implemented for Motif only.
\membersection{wxChoice::GetClientData}\label{wxchoicegetclientdata}
\constfunc{void*}{GetClientData}{\param{int}{ n}}
Returns a pointer to the client data associated with the given item (if any).
\wxheading{Parameters}
\docparam{n}{An item, starting from zero.}
\wxheading{Return value}
A pointer to the client data, or NULL if the item was not found.
\membersection{wxChoice::GetSelection}\label{wxchoicegetselection}
\constfunc{int}{GetSelection}{\void}
Gets the id (position) of the selected string, or -1 if there is no selection.
\membersection{wxChoice::GetString}\label{wxchoicegetstring}
\constfunc{wxString}{GetString}{\param{int}{ n}}
Returns the string at the given position.
\wxheading{Parameters}
\docparam{n}{The zero-based position.}
\wxheading{Return value}
The string at the given position, or the empty string if {\it n} is invalid.
\membersection{wxChoice::GetStringSelection}\label{wxchoicegetstringselection}
\constfunc{wxString}{GetStringSelection}{\void}
Gets the selected string, or the empty string if no string is selected.
\membersection{wxChoice::Number}\label{wxchoicenumber}
\constfunc{int}{Number}{\void}
Returns the number of strings in the choice control.
\membersection{wxChoice::SetClientData}\label{wxchoicesetclientdata}
\func{void}{SetClientData}{\param{int}{ n}, \param{void* }{data}}
Associates the given client data pointer with the given item.
\wxheading{Parameters}
\docparam{n}{The zero-based item.}
\docparam{data}{The client data.}
\membersection{wxChoice::SetColumns}\label{wxchoicesetcolumns}
\func{void}{SetColumns}{\param{int}{ n = 1}}
Sets the number of columns in this choice item.
\wxheading{Parameters}
\docparam{n}{Number of columns.}
\wxheading{Remarks}
This is implemented for Motif only.
\membersection{wxChoice::SetSelection}\label{wxchoicesetselection}
\func{void}{SetSelection}{\param{int}{ n}}
Sets the choice by passing the desired string position. This does not cause
a wxEVT\_COMMAND\_CHOICE\_SELECTED event to get emitted.
\wxheading{Parameters}
\docparam{n}{The string position to select, starting from zero.}
\wxheading{See also}
\helpref{wxChoice::SetStringSelection}{wxchoicesetstringselection}
\membersection{wxChoice::SetStringSelection}\label{wxchoicesetstringselection}
\func{void}{SetStringSelection}{\param{const wxString\& }{ string}}
Sets the choice by passing the desired string. This does not cause
a wxEVT\_COMMAND\_CHOICE\_SELECTED event to get emitted.
\wxheading{Parameters}
\docparam{string}{The string to select.}
\wxheading{See also}
\helpref{wxChoice::SetSelection}{wxchoicesetselection}