获取盘符，并对盘符进行循环类型监测

最新推荐文章于 2025-04-17 12:07:35 发布

mars_zfmy

最新推荐文章于 2025-04-17 12:07:35 发布

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分类专栏： MFC学习笔记

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本文介绍如何在MFC环境下通过Windows API函数GetLogicalDriveStrings和GetDriveType来获取并判断硬盘盘符的类型，包括可移动、固定、CD-ROM、RAM磁盘或远程磁盘。

MFC下写了段获取盘符的代码，现笔记如下：

采用一下函数

DWORD WINAPI GetLogicalDriveStrings(
  __in          DWORD nBufferLength,
  __out         LPTSTR lpBuffer
);

将系统中有效的盘符以字符串的形式存在buffer中：

UINT WINAPI GetDriveType(
  __in          LPCTSTR lpRootPathName
);

确定一个盘符的类型，有removable, fixed, CD-ROM, RAM disk, or network drive.

Return code	Description
DRIVE_UNKNOWN	The drive type cannot be determined.
DRIVE_NO_ROOT_DIR	The root path is invalid; for example, there is no volume is mounted at the path.
DRIVE_REMOVABLE	The drive has removable media; for example, a floppy drive, thumb drive, or flash card reader.
DRIVE_FIXED	The drive has fixed media; for example, a hard drive or flash 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.

函数代码如下：

int CMarsTestDlg::SearchDrive()
{
UINT DriveNumber = NULL;
TCHAR DriveBuffer[100];
TCHAR *pDriveName = NULL;
DWORD DriverLength = sizeof(DriveBuffer);
int iResult = GetLogicalDriveStrings(DriverLength,(LPTSTR)DriveBuffer);
if(iResult == 0)
{
  MessageBox( TEXT("获取盘符出错!"), TEXT("Intretech"), MB_OK);
  return 0;
}
pDriveName = DriveBuffer;
while(*pDriveName != NULL)
{
  DriveNumber = GetDriveType((LPCTSTR)pDriveName);
  if(DriveNumber == DRIVE_REMOVABLE)
  {
   //监测到可移动盘的代码
  }
  pDriveName += wcslen(pDriveName) + 1;
}
return 0;

}