Test for x, y in GetPosition

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@34251 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/msw/mdi.cpp b/src/msw/mdi.cpp
index 5a3fcf83af344e15adbd389158448d15819bdd9e..d3ed9137f9cdbe10e8e8e0971115c53df5e48922 100644 (file)
--- a/src/msw/mdi.cpp
+++ b/src/msw/mdi.cpp
@@ -839,8 +839,10 @@ void wxMDIChildFrame::DoGetPosition(int *x, int *y) const
   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 
   wxMDIParentFrame *mdiParent = (wxMDIParentFrame *)GetParent();
   ::ScreenToClient((HWND) mdiParent->GetClientWindow()->GetHWND(), &point);
 

-  *x = point.x;
-  *y = point.y;
+  if (x)
+      *x = point.x;
+  if (y)
+      *y = point.y;

 }
 
 void wxMDIChildFrame::InternalSetMenuBar()
 }
 
 void wxMDIChildFrame::InternalSetMenuBar()