Pardon, I still don't understand.
Why the result of "pts" flying out of the screen (2567 110 3198 522)?
Could you direct me to get the right mapping in rect0?


rec0:           rec1:

                (1024,0)--------------┐          
(0,24)----------|                     |
|               |   ● MYrect(1234 104 1739 403)
|               |                     |
|               |                     |
└------------(1024,768)               |
                |                     |
                |                     |
                └-------------------(2304,1024)


pts = win.mappoints(rect0, rect1, MYrect)
rect0 = 0 24 1024 768 
rect1 = 1024 0 2304 1024 
MYrect  = 1234 104 1739 403

pts = 2567 110 3198 522


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