Windows API 中 OVERLAPPED 结构体 初始化

出处：https://github.com/microsoft/Windows-classic-samples/blob/1d363ff4bd17d8e20415b92e2ee989d615cc0d91/Samples/Hyper-V/Storage/cpp/MirrorVirtualDisk.cpp

OVERLAPPED overlapped;

memset(&overlapped, 0, sizeof(overlapped));
overlapped.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
if (overlapped.hEvent == NULL)
{
    opStatus = GetLastError();
    //Cleanup;
}