It is possible in Olly Debugger?

Yes

Ricardo

Or the longer answer...

bp CreateWindowExA

using the Ollydbg command line...

No,in command line ,ollydbg don't work if that prog is packed or crypted(sometime normal prog can't work too,becasuse ipt is in another module) ,you must set bp in user32.dll module name ,just press F2 on CreateWindowExA.

Rubbish. "bp" can set it directly in the runtime library and so will work regardless of whether program is packed or not. I use it when unpacking Armadillo program so your talking crap.

It never break for me!,what'wrong on my computor?

Try reinstalling Ollydbg and using latest command line plugin.

It could be that CreateWindowExA is NOT called. The application could be using MFC or some other library to create windows.

yaa

Ermm... The MFC library itself uses CreateWindowExA when you ask it to create a window... So do most other libraries.

you need to go look to see what APIs are being used in the program first.. CreateWindowExA usually HAS to be called sometime if its a GUI..

but go look at all the APIs being called..thats the easiest way.

sounds like its packed though..