Zhiyi Zhang (@zhiyi) commented about dlls/comctl32/tests/misc.c:
ok( hwnd != NULL, "Failed to create window for class %s.\n", name ); GetClassNameA(hwnd, buff, ARRAY_SIZE(buff)); ok( !strcmp(name, buff), "Unexpected class name %s, expected %s.\n", buff, name );
objid = SendMessageA(hwnd, WM_GETOBJECT, 0, OBJID_QUERYCLASSNAMEIDX);
todo_wine_if(classnameidx & 0x80000000)
So 0x80000000 is a field to mark todos? Please use a dedicated variable like todo_queryclassnameid to mark todos for OBJID_QUERYCLASSNAMEIDX.