[PATCH 2/2] server: Ignore low word of a class instance when looking up for a window class.

Dmitry Timoshkov dmitry at baikal.ru
Sun Feb 16 22:22:45 CST 2020


Signed-off-by: Dmitry Timoshkov <dmitry at baikal.ru>
---
 dlls/user32/tests/class.c | 3 ---
 server/class.c            | 2 +-
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/dlls/user32/tests/class.c b/dlls/user32/tests/class.c
index b07ff8548f..ceb3483285 100644
--- a/dlls/user32/tests/class.c
+++ b/dlls/user32/tests/class.c
@@ -128,14 +128,11 @@ static void ClassTest(HINSTANCE hInstance, BOOL global)
        WS_OVERLAPPEDWINDOW + WS_HSCROLL + WS_VSCROLL,
        CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, 0,
        0, hInstance2, 0);
-todo_wine_if (!global)
     ok(hTestWnd != 0, "Failed to create window for hInstance %p\n", hInstance2);
 
-todo_wine_if (!global)
     ok((HINSTANCE)GetClassLongPtrA(hTestWnd, GCLP_HMODULE) == hInstance,
        "Wrong GCL instance %p != %p\n",
        (HINSTANCE)GetClassLongPtrA(hTestWnd, GCLP_HMODULE), hInstance);
-todo_wine_if (!global)
     ok((HINSTANCE)GetWindowLongPtrA(hTestWnd, GWLP_HINSTANCE) == hInstance2,
        "Wrong GWL instance %p != %p\n",
        (HINSTANCE)GetWindowLongPtrA(hTestWnd, GWLP_HINSTANCE), hInstance2);
diff --git a/server/class.c b/server/class.c
index b8240bd568..21903f90d0 100644
--- a/server/class.c
+++ b/server/class.c
@@ -102,7 +102,7 @@ static struct window_class *find_class( struct process *process, atom_t atom, mo
     {
         struct window_class *class = LIST_ENTRY( ptr, struct window_class, entry );
         if (class->atom != atom) continue;
-        if (!instance || !class->local || class->instance == instance) return class;
+        if (!instance || !class->local || (class->instance & ~0xffff) == (instance & ~0xffff)) return class;
     }
     return NULL;
 }
-- 
2.20.1




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