WriteFile操作时返回87错误

标签：class   blog   code   get   数据   2014   

调用 WriteFile写数据时出错，用GetLastError得到错误代码为87（无效参数）。 

代码片段如下：

  if ((!WriteFile(
        m_hDevEx,
        pBuf,
        size,
        &WriteBytes,
        &Overlapped)) &&
        (GetLastError() != ERROR_IO_PENDING))
    {
        OutputDebugString("Write error\n");
        return false;

    }

 问题出在最后一个参数Overlapped，初始化是这样的：

    OVERLAPPED Overlapped;
    Overlapped.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);

    OVERLAPPED    Overlapped;
    Overlapped.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
    Overlapped.Offset = 0;
    Overlapped.OffsetHigh = 0;
 

WriteFile操作时返回87错误,布布扣,bubuko.com

WriteFile操作时返回87错误

标签：class   blog   code   get   数据   2014   

原文地址：http://blog.csdn.net/saloon_yuan/article/details/29569527