added wxDC::GetHDC() for backwards compatibility with the existing wxMSW code

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@56162 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/dc.h

@@ -1121,8 +1121,12 @@ public:
     wxDEPRECATED( void GetLogicalOrigin(long *x, long *y) const );
     wxDEPRECATED( void GetDeviceOrigin(long *x, long *y) const );
     wxDEPRECATED( void GetClippingBox(long *x, long *y, long *w, long *h) const );
+
 #endif  // WXWIN_COMPATIBILITY_2_8
 
+#ifdef __WXMSW__
+    WXHDC GetHDC() const;
+#endif // __WXMSW__
 
 protected:
     // ctor takes ownership of the pointer