The reason I asked is, I'm working on a keypress project where you will be able to build your own sequence of keys and possibly a spam tool, also gameguard doesn't let me use SendMessage and keybd_event. I'll try PostMessage soon and post the results, thanks a lot! :mofo:
Edit: Researching, I've found that gameguard hooks all the 5 bytes stuff such as GetPixel, SendMessage, PostMessage, keybd_event... I'm trying to do that "trampoline" by pass, not sure if you ever heard about it. I could make it to send the ENTER key and it works, but it only sends 1 time and if I pass the focus to the game and then the macro again it sends once more and there it goes... I think I'm almost there. I still wonder how you did this. :(