Added wxTopLevelWindow::SetTranslucency and CanSetTranslucency, with

implementations (so far) for wxMSW and wxMac.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@40112 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/mac/carbon/toplevel.cpp

@@ -1431,6 +1431,21 @@ bool wxTopLevelWindowMac::IsFullScreen() const
     return m_macFullScreenData != NULL ;
 }
 
+
+bool wxTopLevelWindowMac::SetTranslucency(int alpha)
+{
+    WindowRef handle = GetControlOwner((OpaqueControlRef*)GetHandle());
+    OSStatus result = SetWindowAlpha(handle, float(alpha)/255.0);
+    return result == noErr;
+}
+
+
+bool wxTopLevelWindowMac::CanSetTranslucency()
+{
+    return true;
+}
+
+
 void wxTopLevelWindowMac::SetExtraStyle(long exStyle)
 {
     if ( GetExtraStyle() == exStyle )