使用api函数 GetDriveType 来从 'a:\' 到 'z:\' 一一测试，如为 CD-ROM 则是光驱。The GetDriveType function determines whether a disk drive is a removable, fixed, CD-ROM, RAM disk, or network drive. UINT GetDriveType( LPCTSTR lpRootPathName // address of root path ); ParameterslpRootPathNamePoints to a null-terminated string that specifies the root directory of the disk to return information about. If lpRootPathName is NULL, the function uses the root of the current directory. Return ValuesThe return value specifies the type of drive. It can be one of the following values: Value Meaning 0 The drive type cannot be determined. 1 The root directory does not exist. DRIVE_REMOVABLE The drive can be removed from the drive. DRIVE_FIXED The disk cannot be removed from the drive. DRIVE_REMOTE The drive is a remote (network) drive. DRIVE_CDROM The drive is a CD-ROM drive. DRIVE_RAMDISK The drive is a RAM disk.
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ParameterslpRootPathNamePoints to a null-terminated string that specifies the root directory of the disk to return information about. If lpRootPathName is NULL, the function uses the root of the current directory. Return ValuesThe return value specifies the type of drive. It can be one of the following values: Value Meaning
0 The drive type cannot be determined.
1 The root directory does not exist.
DRIVE_REMOVABLE The drive can be removed from the drive.
DRIVE_FIXED The disk cannot be removed from the drive.
DRIVE_REMOTE The drive is a remote (network) drive.
DRIVE_CDROM The drive is a CD-ROM drive.
DRIVE_RAMDISK The drive is a RAM disk.