Avoid warnings when wxMAC_USE_CORE_GRAPHICS_BLEND_MODES is not defined

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41620 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/common/graphcmn.cpp b/src/common/graphcmn.cpp
index 65a5dd067fefe10fd5b22734443beeba4e7eb18f..16e83757db604558ff906118935282181c93d3ac 100644 (file)
--- a/src/common/graphcmn.cpp
+++ b/src/common/graphcmn.cpp
@@ -34,6 +34,10 @@
 
 #if wxUSE_GRAPHICS_CONTEXT
 
+#if !defined(wxMAC_USE_CORE_GRAPHICS_BLEND_MODES)
+#define wxMAC_USE_CORE_GRAPHICS_BLEND_MODES 0
+#endif
+
 //-----------------------------------------------------------------------------
 // constants
 //-----------------------------------------------------------------------------