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user32: Avoid accessing the window structure directly in DispatchMessage16.

This commit is contained in:
Alexandre Julliard 2009-12-22 15:24:53 +01:00
parent 73cf431aac
commit 4e343b6f3a
1 changed files with 2 additions and 12 deletions
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14
dlls/user32/msg16.c
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@ -1797,7 +1797,6 @@ BOOL16 WINAPI TranslateMessage16( const MSG16 *msg )
*/ */
LONG WINAPI DispatchMessage16( const MSG16* msg ) LONG WINAPI DispatchMessage16( const MSG16* msg )
{ {
WND * wndPtr;
WNDPROC16 winproc; WNDPROC16 winproc;
LONG retval; LONG retval;
HWND hwnd = WIN_Handle32( msg->hwnd ); HWND hwnd = WIN_Handle32( msg->hwnd );
@ -1810,20 +1809,11 @@ LONG WINAPI DispatchMessage16( const MSG16* msg )
msg->message, msg->wParam, GetTickCount() ); msg->message, msg->wParam, GetTickCount() );
} }
if (!(wndPtr = WIN_GetPtr( hwnd ))) if (!(winproc = (WNDPROC16)GetWindowLong16( msg->hwnd, GWLP_WNDPROC )))
{ {
if (msg->hwnd) SetLastError( ERROR_INVALID_WINDOW_HANDLE ); SetLastError( ERROR_INVALID_WINDOW_HANDLE );
return 0; return 0;
} }
if (wndPtr == WND_OTHER_PROCESS || wndPtr == WND_DESKTOP)
{
if (IsWindow( hwnd )) SetLastError( ERROR_MESSAGE_SYNC_ONLY );
else SetLastError( ERROR_INVALID_WINDOW_HANDLE );
return 0;
}
winproc = WINPROC_GetProc16( wndPtr->winproc, wndPtr->flags & WIN_ISUNICODE );
WIN_ReleasePtr( wndPtr );
SPY_EnterMessage( SPY_DISPATCHMESSAGE16, hwnd, msg->message, msg->wParam, msg->lParam ); SPY_EnterMessage( SPY_DISPATCHMESSAGE16, hwnd, msg->message, msg->wParam, msg->lParam );
retval = CallWindowProc16( winproc, msg->hwnd, msg->message, msg->wParam, msg->lParam ); retval = CallWindowProc16( winproc, msg->hwnd, msg->message, msg->wParam, msg->lParam );
SPY_ExitMessage( SPY_RESULT_OK16, hwnd, msg->message, retval, msg->wParam, msg->lParam ); SPY_ExitMessage( SPY_RESULT_OK16, hwnd, msg->message, retval, msg->wParam, msg->lParam );