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