X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4d5a0f67c6f127ad08548494cdddc5c89bb27194..7b1279006496ba3251a755bcef91301ad107bb78:/docs/latex/wx/closeevt.tex diff --git a/docs/latex/wx/closeevt.tex b/docs/latex/wx/closeevt.tex index 611c752b79..6ea5728e48 100644 --- a/docs/latex/wx/closeevt.tex +++ b/docs/latex/wx/closeevt.tex @@ -2,6 +2,20 @@ This event class contains information about window and session close events. +The handler function for EVT\_CLOSE is called when the user has tried to close a a frame +or dialog box using the window manager (X) or system menu (Windows). It is +called via the \helpref{wxWindow::Close}{wxwindowclose} function, so +that the application can also invoke the handler programmatically. + +You should check whether the application is forcing the deletion of the window +using \helpref{wxCloseEvent::CanVeto}{wxcloseeventcanveto}. If this is {\tt FALSE}, +you {\it must} destroy the window using \helpref{wxWindow::Destroy}{wxwindowdestroy}. +If the return value is TRUE, it is up to you whether you respond by destroying the window. + +If you don't destroy the window, you should call \helpref{wxCloseEvent::Veto}{wxcloseeventveto} to +let the calling code know that you did not destroy the window. This allows the \helpref{wxWindow::Close}{wxwindowclose} function +to return {\tt TRUE} or {\tt FALSE} depending on whether the close instruction was honoured or not. + \wxheading{Derived from} \helpref{wxEvent}{wxevent} @@ -27,7 +41,6 @@ This event applies to wxApp only.} \wxheading{See also} -\helpref{wxWindow::OnCloseWindow}{wxwindowonclosewindow},\rtfsp \helpref{wxWindow::Close}{wxwindowclose},\rtfsp \helpref{wxApp::OnQueryEndSession}{wxapponqueryendsession},\rtfsp %% GD: OnXXX functions are not documented