获得U盘的信息，直接代码：

INT GetUDiskInfo(void){	CString szUDiskRoot;	UINT unDiskType;	size_t nAllDriverStr=GetLogicalDriveStringsW(0,NULL);	TCHAR *pDriverStr=new TCHAR[nAllDriverStr+sizeof(_T(""))];	TCHAR *pSavePoint=pDriverStr;	GetLogicalDriveStringsW(nAllDriverStr,pDriverStr);	size_t nSize=_tcslen(pDriverStr);	while (nSize>0)	{	    unDiskType=GetDriveTypeW(pDriverStr);	    switch (unDiskType)	    {	        case DRIVE_NO_ROOT_DIR: 	            break;	        case DRIVE_REMOVABLE:	            szUDiskRoot=pDriverStr;	            //AfxMessageBox(szUDiskRoot);	        case DRIVE_FIXED:	            break;	        case DRIVE_REMOTE:  	            break;	        case DRIVE_CDROM: 	            break;	     }	        pDriverStr += (nSize + 1)*sizeof(_T(""));	        nSize=_tcslen(pDriverStr);	}	    delete []pSavePoint;	    DWORD nVolumeNameSize = _MAX_FNAME;	    LPTSTR lpVolumeNameBuffer = new TCHAR[_MAX_FNAME];	    DWORD nVolumeSerialNumber = 0;        DWORD nMaximumComponentLength; 	    DWORD nFileSystemFlags;	    LPTSTR lpFileSystemNameBuffer = new TCHAR[40]; GetVolumeInformationW(szUDiskRoot,lpVolumeNameBuffer,nVolumeNameSize,&nVolumeSerialNumber,&nMaximumComponentLength,&nFileSystemFlags,lpFileSystemNameBuffer,40);	    delete[]lpVolumeNameBuffer;	    delete[]lpFileSystemNameBuffer;	    return 0;}