枚举 Windows 中所有可用的驱动器号
我想使用 VC++ 枚举 Windows 中所有可用的驱动器号(尚未使用).
I want to enumerate all available drive letters (which aren't already taken) in Windows using VC++.
我该怎么做?
推荐答案
::GetLogicalDrives() 返回可用(读取:已使用)驱动器列表作为掩码中的位.这应该包括映射的网络驱动器.因此，您可以简单地遍历这些位以查找为零的位，这意味着不存在驱动器.如果有疑问，您可以随时致电 ::GetDriveType() 带有驱动器号 + ":" (":\" 在 C 代码中，或 _T(":\") 在 Unicode 感知术语中，当然)，如果驱动器可用，应该返回 DRIVE_UNKNOWN 或 DRIVE_NO_ROOT_DIR.
::GetLogicalDrives() returns a list of available (read: used) drives as bits in a mask. This should include mapped network drives. Thus, you can simply walk the bits to find bits that are zero, meaning no drive is present. If in doubt, you can always call ::GetDriveType() with the drive letter + ":" (":\" in C code, or _T(":\") in Unicode-aware terminology, of course), and that should return DRIVE_UNKNOWN or DRIVE_NO_ROOT_DIR if the drive is available.
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