Works like a charm! :thumbsup:

I have a CButton derived class. I would like this class to handle the click event itself. What should I put in my message map for the button class? ON_BN_CLICKED doesn't work. :confused:

You could manipulate the clipping region for the desktop window before having it paint itself.

That was a new one to me. Have a 5.

:-D

What's wrong with assigning a variable from a function call?

I think EnumWindows and GetWindowRect functions can be used.

It's discrete data. Calculating the integral is really simple. If you can write a loop and use addition you will be fine.