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Prevent DispatchMessage from dispatching a message to a different 

thread (reported by Dmitry Timoshkov).
This commit is contained in:
Alexandre Julliard 2004-10-05 22:33:22 +00:00
parent 2f4b33c904
commit 8e68b54787
1 changed files with 16 additions and 6 deletions
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22
windows/message.c
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@ -777,9 +777,14 @@ LONG WINAPI DispatchMessageA( const MSG* msg )
} }
if (wndPtr == WND_OTHER_PROCESS) if (wndPtr == WND_OTHER_PROCESS)
{ {
if (IsWindow( msg->hwnd )) if (IsWindow( msg->hwnd )) SetLastError( ERROR_MESSAGE_SYNC_ONLY );
ERR( "cannot dispatch msg to other process window %p\n", msg->hwnd ); else SetLastError( ERROR_INVALID_WINDOW_HANDLE );
SetLastError( ERROR_INVALID_WINDOW_HANDLE ); return 0;
}
if (wndPtr->tid != GetCurrentThreadId())
{
SetLastError( ERROR_MESSAGE_SYNC_ONLY );
WIN_ReleasePtr( wndPtr );
return 0; return 0;
} }
if (!(winproc = wndPtr->winproc)) if (!(winproc = wndPtr->winproc))
@ -869,9 +874,14 @@ LONG WINAPI DispatchMessageW( const MSG* msg )
} }
if (wndPtr == WND_OTHER_PROCESS) if (wndPtr == WND_OTHER_PROCESS)
{ {
if (IsWindow( msg->hwnd )) if (IsWindow( msg->hwnd )) SetLastError( ERROR_MESSAGE_SYNC_ONLY );
ERR( "cannot dispatch msg to other process window %p\n", msg->hwnd ); else SetLastError( ERROR_INVALID_WINDOW_HANDLE );
SetLastError( ERROR_INVALID_WINDOW_HANDLE ); return 0;
}
if (wndPtr->tid != GetCurrentThreadId())
{
SetLastError( ERROR_MESSAGE_SYNC_ONLY );
WIN_ReleasePtr( wndPtr );
return 0; return 0;
} }
if (!(winproc = wndPtr->winproc)) if (!(winproc = wndPtr->winproc))