1 bool diskoperate::registerDisk(const QString & cDiskName)
 2 {
 3     if (!IsDiskExist(cDiskName.at(0).toLatin1()))
 4     {
 5         return false;
 6     }
 7 
 8     const UINT oldmode = ::SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOOPENFILEERRORBOX);//不弹出系统提示
 9     HANDLE  handle = CreateFile(
10         cDiskName.toStdWString().c_str() ,
11         GENERIC_READ,
12         FILE_SHARE_READ | FILE_SHARE_WRITE,
13         0,
14         OPEN_EXISTING,
15         FILE_FLAG_BACKUP_SEMANTICS | FILE_ATTRIBUTE_NORMAL,
16         0);//拿到盘符句柄
17     if (handle == nullptr)
18     {
19         return false;
20     }
21     DEV_BROADCAST_HANDLE  NotificationFilter;
22     ZeroMemory( &NotificationFilter, sizeof (NotificationFilter) );
23     NotificationFilter.dbch_size = sizeof (DEV_BROADCAST_HANDLE );
24     NotificationFilter.dbch_devicetype = DBT_DEVTYP_HANDLE;
25     NotificationFilter.dbch_handle = handle;
26     HDEVNOTIFY  hDevNotify = RegisterDeviceNotification((HWND)this->winId()
27         , &NotificationFilter
28         , DEVICE_NOTIFY_WINDOW_HANDLE);//注册设备通知
29     
30     CloseHandle(handle);//关闭盘符句柄
31     ::SetErrorMode(oldmode);//恢复之前错误模式
32     if (!hDevNotify)
33     {
34         return false;
35     }
36 
37     m_lstMoveDrive[cDiskName.at(0)] = hDevNotify;
38 
39     return true;
40 }

 1 bool IsDiskExist(char cDiskName)  
 2 {  
 3     DWORD dwDrivers;  
 4     int i = toupper(cDiskName) - 'A';  
 5 
 6     //dwDrivers的每一个二进制位表示对应的驱动器是否存在。  
 7     dwDrivers = GetLogicalDrives();  
 8     //判断当前位是否有驱动器  
 9     if ((dwDrivers & (1 << (i))) != 0)  
10     {  
11         return true;  
12     }  
13     return false;  
14 }