From 6e4d441ce11739b145dae200d7b20743c64147de Mon Sep 17 00:00:00 2001 From: Zebediah Figura Date: Wed, 1 Jan 2020 12:14:13 -0600 Subject: [PATCH] user32/tests: Work around a failure on Windows < Vista. Signed-off-by: Zebediah Figura Signed-off-by: Alexandre Julliard --- dlls/user32/tests/winstation.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/dlls/user32/tests/winstation.c b/dlls/user32/tests/winstation.c index aaa51d560ac..4aa5565b96c 100644 --- a/dlls/user32/tests/winstation.c +++ b/dlls/user32/tests/winstation.c @@ -51,7 +51,12 @@ static void register_class(void) WNDCLASSA cls; cls.style = CS_DBLCLKS; - cls.lpfnWndProc = DefWindowProcA; + /* Windows < Vista apparently checks lpfnWndProc against the address of + * DefWindowProcA(), and for some reason fails to change the thread desktop + * after creating and destroying a window if it doesn't match. Using an IAT + * (as is default) or a wrapper triggers this, so use GetProcAddress() as + * a workaround. */ + cls.lpfnWndProc = (void *)GetProcAddress(GetModuleHandleA("user32"), "DefWindowProcA"); cls.cbClsExtra = 0; cls.cbWndExtra = 0; cls.hInstance = GetModuleHandleA(0);