adding default impl for CreateScaled

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74295 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/bitmap.h

@@ -175,7 +175,8 @@ public:
 
     virtual bool Create(int width, int height, int depth = wxBITMAP_SCREEN_DEPTH) = 0;
     virtual bool Create(const wxSize& sz, int depth = wxBITMAP_SCREEN_DEPTH) = 0;
-    // Create a bitmap compatible with the given DC, inheriting its magnification factor
+    virtual bool CreateScaled(int w, int h, int d, double logicalScale)
+        { return Create(w*logicalScale,h*logicalScale,d);
 
     virtual int GetHeight() const = 0;
     virtual int GetWidth() const = 0;