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Notify if the grid is being destroyed in an event generated by it

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@61875 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Jaakko Salli
2009-09-10 14:15:32 +00:00
parent 834d36af06
commit e84e5ba3c1
2 changed files with 25 additions and 0 deletions
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22
src/propgrid/propgrid.cpp
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@@ -431,6 +431,7 @@ void wxPropertyGrid::Init1()
m_labelEditorProperty = NULL;
m_eventObject = this;
m_curFocused = NULL;
m_processedEvent = NULL;
m_sortFunction = NULL;
m_inDoPropertyChanged = 0;
m_inCommitChangesFromEditor = 0;
@@ -579,6 +580,23 @@ wxPropertyGrid::~wxPropertyGrid()
{
size_t i;
if ( m_processedEvent )
{
// All right... we are being deleted while wxPropertyGrid event
// is being sent. Make sure that event propagates as little
// as possible (although usually this is not enough to prevent
// a crash).
m_processedEvent->Skip(false);
m_processedEvent->StopPropagation();
// Let's use wxMessageBox to make the message appear more
// reliably (and *before* the crash can happend).
::wxMessageBox("wxPropertyGrid was being destroyed in an event "
"generated by it. This usually leads to a crash "
"so it is recommended to destroy the control "
"at idle time instead.");
}
DoSelectProperty(NULL, wxPG_SEL_NOVALIDATE|wxPG_SEL_DONT_SEND_EVENT);
// This should do prevent things from going too badly wrong
@@ -4365,8 +4383,12 @@ bool wxPropertyGrid::SendEvent( int eventType, wxPGProperty* p,
evt.SetCanVeto(true);
}
m_processedEvent = &evt;
wxEvtHandler* evtHandler = m_eventObject->GetEventHandler();
m_processedEvent = NULL;
evtHandler->ProcessEvent(evt);
return evt.WasVetoed();