Document GetBitmapMargins

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@63602 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/button.h

@@ -222,6 +222,15 @@ public:
     */
     wxBitmap GetBitmapPressed() const;
 
+    /**
+        Get the margins between the bitmap and the text of the button.
+
+        @see SetBitmapMargins()
+
+        @since 2.9.1
+     */
+    wxSize GetBitmapMargins();
+
     /**
         Returns the default size for the buttons. It is advised to make all the dialog
         buttons of the same size and this function allows to retrieve the (platform and