you know how in multiplayer games like RainbowSix, Counter-Strike, etc... you can chat while you play....

my question is, how could i make my program, send a chat message.... so it shows up in game.... its like a bound keys program, so if u press 'f5' it will automatically say "Tango down" for you, or whatever...

also, is there a way i can display a message during gameplay on the screen.... like by using bitblt or something. during gameplay, the gamewindow is on top of all other windows, and fullscreen.... so is there any way i can show a message somewhere on the screen? like if i grab the games window handle, is there some way i can print a message on it?