Use variable of type wxEventType to store value returned by GetEventType function.

Since wxEvent::GetEventType() returns wxEventType value, the variable used to hold returned value should be also of this type.

src/propgrid/manager.cpp

@@ -1199,7 +1199,7 @@ bool wxPropertyGridManager::RemovePage( int page )
 
 bool wxPropertyGridManager::ProcessEvent( wxEvent& event )
 {
-    int evtType = event.GetEventType();
+    const wxEventType evtType = event.GetEventType();
 
     // NB: For some reason, under wxPython, Connect in Init doesn't work properly,
     //     so we'll need to call OnPropertyGridSelect manually. Multiple calls