Fix deleting editor controls associated with wxPG properties from within event handler.

Editor controls (and their event handlers) deleted from within wxPG event handler shouldn't by deleted in global idle event handler but only in local wxPG event handler because global idle events can be generated also by calling e.g. wxYield when wxPG is not in the real idle state.

Closes #16617

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78030 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/propgrid/propgrid.h

@@ -1896,6 +1896,11 @@ protected:
     wxArrayPGProperty   m_deletedProperties;
     wxArrayPGProperty   m_removedProperties;
 
+#if !WXWIN_COMPATIBILITY_3_0
+    /** List of editors and their event handlers to be deleted in idle event handler. */
+    wxArrayPGObject     m_deletedEditorObjects;
+#endif
+
     /** List of key codes that will not be handed over to editor controls. */
     // FIXME: Make this a hash set once there is template-based wxHashSet.
     wxVector<int>       m_dedicatedKeys;
@@ -2228,6 +2233,8 @@ protected:
 
     bool DoHideProperty( wxPGProperty* p, bool hide, int flags );
 
+    void DeletePendingObjects();
+
 private:
 
     bool ButtonTriggerKeyTest( int action, wxKeyEvent& event );