由于无效的句柄，WaitForSingleObject返回等待失败 [英] WaitForSingleObject returns wait failed due to invalid handle

问题描述

我正在尝试使用CEvent使我的线程等待，直到按照

I am trying to use a CEvent to make my thread wait until the message queue is ready as per MSDN's advice so that my PostThreadMessage function will work correctly.

BOOL MFC_Thread::InitInstance(){
BOOL worked=CWinThread::InitInstance();
MSG msg;
BOOL result=PeekMessage(&msg, NULL, WM_USER, WM_USER, PM_NOREMOVE);
    fingerveinControllerThreadReady->SetEvent();//Breakpoint 1
    return TRUE;
}

void init(){
    controllerThreadReady=new CEvent(FALSE, FALSE);
CWinThread* thread=AfxBeginThread(RUNTIME_CLASS(MFC_Thread));
controllerThread=thread->m_nThreadID;
WaitForSingleObject(controllerThreadReady, INFINITE);
    DoSomething();//Breakpoint 2
}

不幸的是，似乎WaitForSingleObject并没有完成工作.有时先打断点1，有时打断点2.当先打断点2时，我收到原因为ERROR_INVALID_HANDLE的WAIT_FAILED.为什么会这样?

Unfortunately, it seems that the WaitForSingleObject isn't doing its job. Sometimes Breakpoint 1 is hit first, sometimes Breakpoint 2. When Breakpoint 2 is hit first, I receive WAIT_FAILED with the cause ERROR_INVALID_HANDLE. Why is this happening?

推荐答案

这可能是因为您传递了CEvent对象而不是其句柄.

That might be because you're passing the CEvent object instead of its handle.

尝试一下:

WaitForSingleObject(controllerThreadReady.m_hObject, INFINITE);

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