Qt监测光驱变化（使用WM_DEVICECHANGE）

xxx.h

protected:

bool winEvent(MSG *msg,long * result);

xxx.cpp

bool CBlurayTranscoderDlg::winEvent(MSG *msg,long * result)

{

int msgType = msg->message;

if(msgType == WM_DEVICECHANGE)

{

qDebug() << "winEvent in MgFrame : WM_DEVICECHANGE" ;

PDEV_BROADCAST_HDR lpdb = (PDEV_BROADCAST_HDR)msg->lParam;

switch(msg->wParam)

{

case DBT_DEVICEARRIVAL:

if (lpdb -> dbch_devicetype == DBT_DEVTYP_VOLUME)

{

PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)lpdb;

if (lpdbv -> dbcv_flags & DBTF_MEDIA)

{

/*此处可以做你想做的事*/

qDebug() << "CD_Arrived ";

}

}

break;

case DBT_DEVICEREMOVECOMPLETE:

if (lpdb -> dbch_devicetype == DBT_DEVTYP_VOLUME)

{

PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)lpdb;

if (lpdbv -> dbcv_flags & DBTF_MEDIA)

{

// 弹出光驱，此处可以做你想做的事

qDebug() << "CD_Removed";

}

}

break;

} // skip the rest

} // end of if msgType

return false; // let qt handle the rest

}

只在主窗口中实现以上代码时才可以执行.

http://blog.chinaunix.net/uid-20718335-id-364414.html