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user32: Force undefined bits in GetKeyState() and GetKeyboardState() to zero. 

Only the highest and lowest bits in the return values of these functions
have a meaning, the others are undefined. While the other bits are
always cleared in Windows, wine stores information there. Some programs
expect these undefined bits to be zero, though, so make sure they are
not set.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=30814
Signed-off-by: Markus Engel <markus_wine@familie-engel.online>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
feature/deterministic
Markus Engel 2020-05-18 18:35:58 +02:00 committed by Alexandre Julliard
parent f516a23041
commit d9855df17f
1 changed files with 3 additions and 1 deletions
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4
dlls/user32/input.c
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@ -555,7 +555,7 @@ SHORT WINAPI DECLSPEC_HOTPATCH GetKeyState(INT vkey)
{
req->tid = GetCurrentThreadId();
req->key = vkey;
if (!wine_server_call( req )) retval = (signed char)reply->state;
if (!wine_server_call( req )) retval = (signed char)(reply->state & 0x81);
}
SERVER_END_REQ;
TRACE("key (0x%x) -> %x\n", vkey, retval);
@ -569,6 +569,7 @@ SHORT WINAPI DECLSPEC_HOTPATCH GetKeyState(INT vkey)
BOOL WINAPI DECLSPEC_HOTPATCH GetKeyboardState( LPBYTE state )
{
BOOL ret;
UINT i;
TRACE("(%p)\n", state);
@ -579,6 +580,7 @@ BOOL WINAPI DECLSPEC_HOTPATCH GetKeyboardState( LPBYTE state )
req->key = -1;
wine_server_set_reply( req, state, 256 );
ret = !wine_server_call_err( req );
for (i = 0; i < 256; i++) state[i] &= 0x81;
}
SERVER_END_REQ;
return ret;