GetObject and MessageBox are macros defined in the windows headers. They map these names to either the ANSI or the UNICODE imlplementation. However, they collide with .NET Method-Names, that''s why you get these errors.

General rule of thumb: whenever the compiler complains about a "SomeNameA" or "SomeNameW", you have to #undef SomeName.

The more interesting question to me is: why do you want to override the WndProc? Maybe if you tell us we''ll find a more elegant ''.NETish'' way.

Regards,
Andre

quote:Original post by Link
the question is, why i need to include that header to use WM_ ?

You can always dig into the Windows headers and get the numerical values of those messages. That''s what you''d have to do if you were using C# or VB.NET anywyay.