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user: Copy back the 16-bit MDICREATESTRUCT. 

Otherwise lpCreateParams is overwitten by CREATESTRUCT32Ato16().

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=52356
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Huw Davies 2022-01-11 14:00:37 +00:00 committed by Alexandre Julliard
parent 691c7775d1
commit 8e5774eaa6
1 changed files with 7 additions and 0 deletions
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7
dlls/user.exe16/message.c
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@ -610,6 +610,7 @@ LRESULT WINPROC_CallProc16To32A( winproc_callback_t callback, HWND16 hwnd, UINT1
CREATESTRUCT16 *cs16 = MapSL(lParam); CREATESTRUCT16 *cs16 = MapSL(lParam);
CREATESTRUCTA cs; CREATESTRUCTA cs;
MDICREATESTRUCTA mdi_cs; MDICREATESTRUCTA mdi_cs;
SEGPTR mdi_cs_segptr = 0;
CREATESTRUCT16to32A( cs16, &cs ); CREATESTRUCT16to32A( cs16, &cs );
if (GetWindowLongW(hwnd32, GWL_EXSTYLE) & WS_EX_MDICHILD) if (GetWindowLongW(hwnd32, GWL_EXSTYLE) & WS_EX_MDICHILD)
@ -617,9 +618,15 @@ LRESULT WINPROC_CallProc16To32A( winproc_callback_t callback, HWND16 hwnd, UINT1
MDICREATESTRUCT16 *mdi_cs16 = MapSL(cs16->lpCreateParams); MDICREATESTRUCT16 *mdi_cs16 = MapSL(cs16->lpCreateParams);
MDICREATESTRUCT16to32A(mdi_cs16, &mdi_cs); MDICREATESTRUCT16to32A(mdi_cs16, &mdi_cs);
cs.lpCreateParams = &mdi_cs; cs.lpCreateParams = &mdi_cs;
mdi_cs_segptr = cs16->lpCreateParams;
} }
ret = callback( hwnd32, msg, wParam, (LPARAM)&cs, result, arg ); ret = callback( hwnd32, msg, wParam, (LPARAM)&cs, result, arg );
CREATESTRUCT32Ato16( &cs, cs16 ); CREATESTRUCT32Ato16( &cs, cs16 );
if (mdi_cs_segptr)
{
MDICREATESTRUCT32Ato16( &mdi_cs, MapSL( mdi_cs_segptr ) );
cs16->lpCreateParams = mdi_cs_segptr;
}
} }
break; break;
case WM_MDICREATE: case WM_MDICREATE: