• 一些求磁盘信息的操作


    wchar:wchar是可以保存utf-8字符的字符串

    头文件:wchar.h

    初始化:WCHAR Driver_Path[4]=TEXT("C:\");

    GetLogicalDrives:这个是看计算机中有哪些磁盘

    返回值:32位整数 DWORD

    如何看:将返回值变成2进制,比如返回值是0011那么就表示电脑中有A盘和B盘

    例子:

    DWORD allDisk = GetLogicalDrives();  //返回一个32位整数,将他转换成二进制后,表示磁盘,最低位为A盘  比如返回00011就表示有a盘和b盘
    WCHAR Driver_Path[4]=TEXT("C:\");

      if (allDisk != 0)
      {
        for (int i = 1;i<11;i++) //假定最多有10个磁盘
        {
          if ((allDisk & 1) == 1) //如果有磁盘i
          {
            Driver_Path[0] = 'C' + i - 3;

          }

        allDisk = allDisk >> 1;
        }
      }

    每一个的Driver_Path就保存了这个磁盘的路径

    GetDriveType:求磁盘类型

    参数:LPCWSTR,其实这个就是指向WCHAR字符串的指针

    返回值:

    Return code/valueDescription
    DRIVE_UNKNOWN
    0

    The drive type cannot be determined.

    DRIVE_NO_ROOT_DIR
    1

    The root path is invalid; for example, there is no volume mounted at the specified path.

    DRIVE_REMOVABLE
    2

    The drive has removable media; for example, a floppy drive, thumb drive, or flash card reader.

    DRIVE_FIXED
    3

    The drive has fixed media; for example, a hard disk drive or flash drive.

    DRIVE_REMOTE
    4

    The drive is a remote (network) drive.

    DRIVE_CDROM
    5

    The drive is a CD-ROM drive.

    DRIVE_RAMDISK
    6

    The drive is a RAM disk.

    例子:

    WCHAR Driver_Path[4]=TEXT("C:\");
    GetDriveType(Driver_Path);
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  • 原文地址:https://www.cnblogs.com/shensobaolibin/p/8318575.html
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