Vc U盘插入检测

参考MSDN例子：Detecting Media Insertion or Removal

响应WM_DEVICECHANGE 消息：

BOOL OnDeviceChange( UINT nEventType, DWORD dwData )
{

 PDEV_BROADCAST_HDR lpdb = (PDEV_BROADCAST_HDR)dwData;     // struct transform
 PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)lpdb;

 switch (nEventType)
 {

 case DBT_DEVNODES_CHANGED:
  ...

  break;

 case DBT_DEVICEARRIVAL:  // device arrival      

  if(GetDriveType(UDriveName)==DRIVE_REMOVABLE)
  {

........

  }
  else
  {

......  

  }  

  break;

 case DBT_DEVICEREMOVECOMPLETE   :  // remove device

........
 
  break;

 }

 return TRUE;
}