wxWidgets/docs/latex/wx/busyinfo.tex

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\section{\class{wxBusyInfo}}\label{wxbusyinfo}
This class makes it easy to tell your user that the program is temporarily busy.
Just create a wxBusyInfo object on the stack, and within the current scope,
a message window will be shown.
For example:
\begin{verbatim}
wxBusyInfo wait("Please wait, working...");
for (int i = 0; i < 100000; i++)
{
DoACalculation();
}
\end{verbatim}
It works by creating a window in the constructor,
and deleting it in the destructor.
You may also want to call wxTheApp->Yield() to refresh the window
periodically (in case it had been obscured by other windows, for
example) like this:
\begin{verbatim}
wxWindowDisabler disableAll;
wxBusyInfo wait("Please wait, working...");
for (int i = 0; i < 100000; i++)
{
DoACalculation();
if ( !(i % 1000) )
wxTheApp->Yield();
}
\end{verbatim}
but take care to not cause undesirable reentrancies when doing it (see
\helpref{wxApp::Yield()}{wxappyield} for more details). The simplest way to do
it is to use \helpref{wxWindowDisabler}{wxwindowdisabler} class as illustrated
in the above example.
\wxheading{Derived from}
None
\wxheading{Include files}
<wx/busyinfo.h>
\latexignore{\rtfignore{\wxheading{Members}}}
\membersection{wxBusyInfo::wxBusyInfo}
\func{}{wxBusyInfo}{\param{const wxString\&}{ msg}, \param{wxParent }{*parent = NULL}}
Constructs a busy info window as child of {\it parent} and displays {\it msg}
in it.
{\bf NB:} If {\it parent} is not {\tt NULL} you must ensure that it is not
closed while the busy info is shown.
\membersection{wxBusyInfo::\destruct{wxBusyInfo}}
\func{}{\destruct{wxBusyInfo}}{\void}
Hides and closes the window containing the information text.