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user32: Return -1 from peek_message() on error. 

Signed-off-by: Zebediah Figura <z.figura12@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Zebediah Figura 2019-09-14 12:35:40 -05:00 committed by Alexandre Julliard
parent e40d857f1c
commit 7c768d9052
1 changed files with 25 additions and 14 deletions
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39
dlls/user32/message.c
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@ -2743,10 +2743,11 @@ static inline void call_sendmsg_callback( SENDASYNCPROC callback, HWND hwnd, UIN
/***********************************************************************
* peek_message
*
* Peek for a message matching the given parameters. Return FALSE if none available.
* Peek for a message matching the given parameters. Return 0 if none are
* available; -1 on error.
* All pending sent messages are processed before returning.
*/
static BOOL peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags, UINT changed_mask )
static int peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags, UINT changed_mask )
{
LRESULT result;
struct user_thread_info *thread_info = get_user_thread_info();
@ -2756,7 +2757,7 @@ static BOOL peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags
void *buffer;
size_t buffer_size = 256;
if (!(buffer = HeapAlloc( GetProcessHeap(), 0, buffer_size ))) return FALSE;
if (!(buffer = HeapAlloc( GetProcessHeap(), 0, buffer_size ))) return -1;
if (!first && !last) last = ~0;
if (hwnd == HWND_BROADCAST) hwnd = HWND_TOPMOST;
@ -2804,9 +2805,14 @@ static BOOL peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags
{
thread_info->wake_mask = changed_mask & (QS_SENDMESSAGE | QS_SMRESULT);
thread_info->changed_mask = changed_mask;
return 0;
}
if (res != STATUS_BUFFER_OVERFLOW) return FALSE;
if (!(buffer = HeapAlloc( GetProcessHeap(), 0, buffer_size ))) return FALSE;
if (res != STATUS_BUFFER_OVERFLOW)
{
SetLastError( RtlNtStatusToDosError(res) );
return -1;
}
if (!(buffer = HeapAlloc( GetProcessHeap(), 0, buffer_size ))) return -1;
continue;
}
@ -2927,7 +2933,7 @@ static BOOL peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags
thread_info->GetMessageExtraInfoVal = msg_data->hardware.info;
HeapFree( GetProcessHeap(), 0, buffer );
HOOK_CallHooks( WH_GETMESSAGE, HC_ACTION, flags & PM_REMOVE, (LPARAM)msg, TRUE );
return TRUE;
return 1;
}
continue;
case MSG_POSTED:
@ -2941,7 +2947,7 @@ static BOOL peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags
if (first == info.msg.message && last == info.msg.message)
{
HeapFree( GetProcessHeap(), 0, buffer );
return FALSE;
return 0;
}
}
else
@ -2963,7 +2969,7 @@ static BOOL peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags
thread_info->msg_source = msg_source_unavailable;
HeapFree( GetProcessHeap(), 0, buffer );
HOOK_CallHooks( WH_GETMESSAGE, HC_ACTION, flags & PM_REMOVE, (LPARAM)msg, TRUE );
return TRUE;
return 1;
}
/* if we get here, we have a sent message; call the window procedure */
@ -3786,18 +3792,20 @@ static inline void check_for_driver_events( UINT msg )
BOOL WINAPI DECLSPEC_HOTPATCH PeekMessageW( MSG *msg_out, HWND hwnd, UINT first, UINT last, UINT flags )
{
MSG msg;
int ret;
USER_CheckNotLock();
check_for_driver_events( 0 );
if (!peek_message( &msg, hwnd, first, last, flags, 0 ))
{
DWORD ret;
ret = peek_message( &msg, hwnd, first, last, flags, 0 );
if (ret < 0) return FALSE;
if (!ret)
{
flush_window_surfaces( TRUE );
ret = wow_handlers.wait_message( 0, NULL, 0, QS_ALLINPUT, 0 );
/* if we received driver events, check again for a pending message */
if (ret == WAIT_TIMEOUT || !peek_message( &msg, hwnd, first, last, flags, 0 )) return FALSE;
if (ret == WAIT_TIMEOUT || peek_message( &msg, hwnd, first, last, flags, 0 ) <= 0) return FALSE;
}
check_for_driver_events( msg.message );
@ -3835,6 +3843,7 @@ BOOL WINAPI DECLSPEC_HOTPATCH GetMessageW( MSG *msg, HWND hwnd, UINT first, UINT
{
HANDLE server_queue = get_server_queue_handle();
unsigned int mask = QS_POSTMESSAGE | QS_SENDMESSAGE; /* Always selected */
int ret;
USER_CheckNotLock();
check_for_driver_events( 0 );
@ -3850,10 +3859,12 @@ BOOL WINAPI DECLSPEC_HOTPATCH GetMessageW( MSG *msg, HWND hwnd, UINT first, UINT
}
else mask = QS_ALLINPUT;
while (!peek_message( msg, hwnd, first, last, PM_REMOVE | (mask << 16), mask ))
while (!(ret = peek_message( msg, hwnd, first, last, PM_REMOVE | (mask << 16), mask )))
{
wait_objects( 1, &server_queue, INFINITE, mask & (QS_SENDMESSAGE | QS_SMRESULT), mask, 0 );
}
if (ret < 0) return -1;
check_for_driver_events( msg->message );
return (msg->message != WM_QUIT);
@ -3866,7 +3877,7 @@ BOOL WINAPI DECLSPEC_HOTPATCH GetMessageW( MSG *msg, HWND hwnd, UINT first, UINT
BOOL WINAPI DECLSPEC_HOTPATCH GetMessageA( MSG *msg, HWND hwnd, UINT first, UINT last )
{
if (get_pending_wmchar( msg, first, last, TRUE )) return TRUE;
GetMessageW( msg, hwnd, first, last );
if (GetMessageW( msg, hwnd, first, last ) < 0) return -1;
map_wparam_WtoA( msg, TRUE );
return (msg->message != WM_QUIT);
}