make vcl compiler under mingw again

Change-Id: Ie4d85ca344163807b9455f6305c35327df9fd877

vcl/win/source/gdi/salbmp.cxx

@@ -31,8 +31,30 @@
 #include <comphelper/broadcasthelper.hxx>
 #include <map>
 
+#if defined _MSC_VER
+#pragma warning(push, 1)
+#endif
+
+#ifdef __MINGW32__
+#ifdef GetObject
+#undef GetObject
+#endif
+#define GetObject GetObjectA
+#endif
+
 #include <gdiplus.h>
 
+#ifdef __MINGW32__
+#ifdef GetObject
+#undef GetObject
+#endif
+#endif
+
+#if defined _MSC_VER
+#pragma warning(pop)
+#endif
+
+
 // ------------------------------------------------------------------
 // - Inlines -
 

vcl/win/source/gdi/salgdi_gdiplus.cxx

@@ -351,7 +351,12 @@ void setInterpolationMode(
 
     if(bSameWidth && bSameHeight)
     {
+#ifdef __MINGW32__
+        //Gdiplus::InterpolationModeInvalid is missing on mingw
+        rGraphics.SetInterpolationMode(Gdiplus::InterpolationModeDefault);
+#else
         rGraphics.SetInterpolationMode(Gdiplus::InterpolationModeInvalid);
+#endif
     }
     else if(rDestWidth > rSrcWidth && rDestHeight > rSrcHeight)
     {