[maxxxxx]

That's actually a weird thing with a lot of MS tech, especially .NET desktop development. They barely used Winforms themselves, WPF got only used in Visual Studio 2010 (and made it slow and buggy for the first releases). They put out stuff for developers but don't use it themselves.

[ygra]

WPF has also been used for PowerShell ISE, Windows Live Writer, ABC a bunch of other things. A problem with adopting Windows forms or WPF internally is probably that no Windows core component or application could depend on .NET or non-system libraries, and a lot of applications are older than .NET and certainly wouldn't be rewritten.

[zerr]

Yes, same goes for MFC.

[maxxxxx]

Very true. Does anyone know how the situation is with Apple? Do they use the libraries they have developers work with?