From 2b45d0fefe4c04a784bce1af796dcdea4da89479 Mon Sep 17 00:00:00 2001 From: Zebediah Figura Date: Wed, 9 Oct 2019 23:15:10 -0500 Subject: [PATCH] quartz/filtergraph: Ensure that the thread has a message queue before posting messages to it. Signed-off-by: Zebediah Figura Signed-off-by: Alexandre Julliard --- dlls/quartz/filtergraph.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/dlls/quartz/filtergraph.c b/dlls/quartz/filtergraph.c index 3017ee74085..7e72c76eaca 100644 --- a/dlls/quartz/filtergraph.c +++ b/dlls/quartz/filtergraph.c @@ -987,6 +987,10 @@ static DWORD WINAPI message_thread_run(void *ctx) IFilterGraphImpl *graph = ctx; MSG msg; + /* Make sure we have a message queue. */ + PeekMessageW(&msg, NULL, 0, 0, PM_NOREMOVE); + SetEvent(graph->message_thread_ret); + CoInitializeEx(NULL, COINIT_MULTITHREADED); for (;;) @@ -5686,8 +5690,9 @@ static HRESULT filter_graph_common_create(IUnknown *outer, void **out, BOOL thre if (threaded) { - fimpl->message_thread = CreateThread(NULL, 0, message_thread_run, fimpl, 0, &fimpl->message_thread_id); fimpl->message_thread_ret = CreateEventW(NULL, FALSE, FALSE, NULL); + fimpl->message_thread = CreateThread(NULL, 0, message_thread_run, fimpl, 0, &fimpl->message_thread_id); + WaitForSingleObject(fimpl->message_thread_ret, INFINITE); } else fimpl->message_thread = NULL;