FindWindowA failure

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Grey Alien

papa: TOP MAN! it's that mysterious z after the $. I presume $z must mean shortstring or somthing, right? The actual param NullString wasn't a problem left as an integer as you can see by this now working code:

Extern "win32"
	Function FindWindowA:Int(nullstring%,WindowText$z)
End Extern

AppTitle = "test"
Graphics 640,320,0
Cls
Local handle = FindWindowA(0,"test")
DrawText handle,0,0
Flip
WaitKey

thanks again.