how to Clip window to primary display monitor

[Deepak_Sharma]

dear respected members.

if a computer is connected with another monitor(extended display), as we know we can move a window to secondary (extended) display, while still using primary monitor workarea for other tasks. i use it all the time when i want to watch movie while still want to work on something. .

what i want to do is, that even with extended display, i would like to confine the window to primary monitor only, i was using clipping(SetWindowRgn) for it by calculating the primary corrdinates. but sadly this approach disables the aero effect.

i have asked this quesiton in other thread, but the context was not clear i think,

regards
D