Snapshot under Windows NT

[ceodav]

Hi,

i found many examples in internet about getting the screen snapshot.
Actually they works for W2K but not for Windows NT4.

in particular i found the proble in the function which converts from DDB (get from clipboard) and DIB that has to be saved in bmp file.

the question is:

Have anyone a solution or an example of scrren capture function that works also under WNT?

i know is generic discussion but i don't know how to solve the problem.

thanks
Davide