Move CanSetTransparent and SetTransparent up to wxWindowBase since

wxMac can handle transparency at that level.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@40730 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/window.h

@@ -1027,6 +1027,12 @@ public:
     wxAccessible* GetOrCreateAccessible() ;
 #endif
 
+    
+    // Set window transparency if the platform supports it
+    virtual bool SetTransparent(wxByte WXUNUSED(alpha)) { return false; }
+    virtual bool CanSetTransparent() { return false; }
+
+
     // implementation
     // --------------