4 corners

Hi,

Can anyone tell me how to go about writing a small c++ program to detect the 4 corner coordinates of the host screen? Or, what library would be best included?

Thanks in advance.
This worked great. However I'd like to know what I am doing. I've searched for wtypes.h and didn't get very far.

I want to draw lines between the points, maybe fill in closed structures, etc. Is this library capable of doing this?
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