the impossible

[mariod83]

I am trying to create a program that allows the user to view a client's screen. I know how to capture the screen but I do not know how to monitor the client's screen for repaint changes. How would I or what would I use if I wanted to monitor the changes made on the screen? subclassing? (when you move a window, re-appear or re-paint that selected area, not the whole picture again) I would appricate it if you would at least point me in the right direction... I have tried many and looked at MANY MANY api calls but I am not sure what to use. Any suggestions would be appricated. Thanks!

-Mario