PocketMatrix

This means that your STLport is not included properly in your include search path. I will remove dependency on <cassert> in the next release (so that STLport is not required for using the library, as opposed to building it).

For now: installing STLport is easy, take a look at the following link:

http://frog.flipcode.com/PocketFrog/install.html

If you have any other question, let me know!

Ok..I can compile "Blit" sample now.
Thank you for your help.

Did you compile it under VC++ as well? when I do, it creates the window in landscape but also rotates the entire image so it doesn't fit in the window and is displayed sideways

I'm (forced) using Windows 98, as you can see the left part of the window just isn't updated and everything is rotated counter clockwise. I read somewhere in the pocketfrog code that some rotate functions only work under NT. But it runs fine when I set the orientation to north and as you can see from the screenshot some rotation function seem to work fine
I really need to find my Visual Studio CD, so I can install vc++ on my xp or win2k machine.