打开、关闭某一个驱动器：
MCI_OPEN_PARMS op;
MCI_STATUS_PARMS st;
DWORD flags;
TCHAR szDriverName[] = "F:"; //驱动器名字
::ZeroMemory (&op, sizeof(MCI_OPEN_PARMS));
op.lpstrDeviceType = (LPCSTR)MCI_DEVTYPE_CD_AUDIO;
op.lpstrElementName = szDriverName;
flags = MCI_OPEN_TYPE
| MCI_OPEN_TYPE_ID
| MCI_OPEN_ELEMENT
| MCI_OPEN_SHAREABLE;
if(!mciSendCommand (0, MCI_OPEN, flags, (unsigned long)&op)) //打开设备
{
st.dwItem = MCI_STATUS_READY;
mciSendCommand (op.wDeviceID, MCI_SET, MCI_SET_DOOR_OPEN, 0); //打开光驱门
mciSendCommand (op.wDeviceID, MCI_SET, MCI_SET_DOOR_CLOSED, 0); //关闭光驱门
}
mciSendCommand (op.wDeviceID, MCI_CLOSE, MCI_WAIT, 0); //关闭设备
打开、关闭所有驱动器：
int nPos;
UINT nCount = 0;
TCHAR szDrive[] = "?://";
DWORD dwDriveList = ::GetLogicalDrives ();
while(dwDriveList)
{
if(dwDriveList & 1)
{
szDrive[0] = 0x41 + nPos; //0x41 = 'A'
if(::GetDriveType (szDrive) == DRIVE_CDROM)
{
... //打开或关闭名为szDrive的驱动器
}
}
dwDriveList >>= 1;
nPos++;
}
备注：
需要引入mmsystem.h 和 winmm.lib
