A program in C# to tell whether opened applications are in maximized mode or not

I would like to know whether any libraries a开发者_StackOverflow社区re available in Windows OS which allows us to capture other applications window states

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Use PInvoke to call GetWindowPlacement.

See here for details:

http://www.pinvoke.net/default.aspx/user32/getwindowplacement.html

You can use FindWindowEx to find the handle to the window.

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Process Hacker as a large set of libraries that can be linked against in .NET.

It should have everything you need to do what you want - and a lot more.