使用哪个代码片段来处理 USB 设备插入？

Question

应用程序可以使用 RegisterDeviceNotification function to register to receive notification messages from the system. This example 展示了如何为设备接口注册事件通知，这些接口是接口 class 的成员，其 GUID 被传递给函数。

在此示例中，我应该使用哪个代码片段来处理 USB 设备插入消息？

Answer 1

搜索 DBT_DEVICEARRIVAL: 这是处理 USB 设备插入消息的地方。

 case WM_DEVICECHANGE:
{
    //
    // This is the actual message from the interface via Windows messaging.
    // This code includes some additional decoding for this particular device type
    // and some common validation checks.
    //
    // Note that not all devices utilize these optional parameters in the same
    // way. Refer to the extended information for your particular device type 
    // specified by your GUID.
    //
    PDEV_BROADCAST_DEVICEINTERFACE b = (PDEV_BROADCAST_DEVICEINTERFACE) lParam;
    TCHAR strBuff[256];

    // Output some messages to the window.
    switch (wParam)
    {
    case DBT_DEVICEARRIVAL:
        msgCount++;
        StringCchPrintf(
            strBuff, 256, 
            TEXT("Message %d: DBT_DEVICEARRIVAL\n"), msgCount);
        break;

使用哪个代码片段来处理 USB 设备插入？

Which code fragment to use to handle USB device insertion?

c++

windows

usb

winapi