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Q: 

Is there a way I can overlay graphics on top of all windows using C#?

I want to create a C# app which rests in the system tray.

However, I would like this application to overlay certain graphic elements / drawing on top of the screen above all windows at certain times.

So, for example, while my application is running, even though minimized to the tray, it will draw certain shapes on top of the screen regardless of what is there.

Is this possible using C#? If not, is there any other language that would have this capability?

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