Zhiyi Zhang (@zhiyi) commented about dlls/comctl32/tests/button.c:
static struct msg_sequence *sequences[NUM_MSG_SEQUENCES];
+static void CALLBACK msg_winevent_proc(HWINEVENTHOOK hevent,
DWORD event,
HWND hwnd,
LONG object_id,
LONG child_id,
DWORD thread_id,
DWORD event_time)
Let's avoid mixing tabs and spaces for new code.