[Bug 29366] GTAIV native trainer doesn't catch some key presses

http://bugs.winehq.org/show_bug.cgi?id=29366

--- Comment #4 from Ruslan  2012-01-13 18:33:40 CST ---
OK, after some experiments it appeared that the trainer waits for 0th bit set
for all these non-working keys. So, this line in GetAsyncKeyState():
return (thread_info->key_state[key] & 0x80) ? 0x8000 : 0;
never gives the value it wants (i.e. 0x8001), no matter whether the user has
pressed the key after last call to GetAsyncKeyState() or not.
If I change the code to return 0x8001, then the keys work, and also one of the
trainer features which didn't work in Wine before starts to work (Fast Run).
Though, it seems to work *too* fast than I have seen it in windows, but this
might be because of higher frame rate on this machine.

So, what about changing 0x8000 to 0x8001? Another solution would be to truely
check if the key has been pressed between function calls.