GetTextExtent checks that passed pointers are not NULL

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@251 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/msw/dc.cpp b/src/msw/dc.cpp
index bdecb6b626578fdbc59a611104d6821e5d4de4a8..4f68df800e6ffcda07708114420fc222a71d07da 100644 (file)
--- a/src/msw/dc.cpp
+++ b/src/msw/dc.cpp
@@ -914,8 +914,8 @@ void wxDC::GetTextExtent(const wxString& string, long *x, long *y,
   GetTextExtentPoint((HDC) m_hDC, (char *)(const char *) string, strlen((char *)(const char *) string), &sizeRect);
   GetTextMetrics((HDC) m_hDC, &tm);
 
-  *x = XDEV2LOGREL(sizeRect.cx);
-  *y = YDEV2LOGREL(sizeRect.cy);
+  if (x) *x = XDEV2LOGREL(sizeRect.cx);
+  if (y) *y = YDEV2LOGREL(sizeRect.cy);
   if (descent) *descent = tm.tmDescent;
   if (externalLeading) *externalLeading = tm.tmExternalLeading;
 }