22 windows_22_windows_file 文件系统-卷

// windows_22_windows_file.cpp : 定义控制台应用程序的入口点。
//
#include "stdafx.h"
#include <windows.h>
void RenameDisk( )
{
  SetVolumeLabel( "C:\\", "SYSTEM" );
}
void ShowSpace( LPSTR pszDrive )
{
  DWORD nSecPerCluster = 0;
  DWORD nBytesPerSector = 0;
  DWORD nFreeClusters = 0;
  DWORD nTotalClusters = 0;
  GetDiskFreeSpace( pszDrive, &nSecPerCluster,
    &nBytesPerSector, &nFreeClusters, &nTotalClusters );
  printf( "\tnSecPerCluster:%d,nBytesPerSector:%d,nFreeClusters:%d, nTotalClusters%d\n",
    nSecPerCluster, nBytesPerSector, nFreeClusters, nTotalClusters );
  //获取大小
  UINT64 nFreeAvailable = 0;
  /*
  PULARGE_INTEGER 可以用 UINT64，PULARGE_INTEGER是丙从此DWORD合成的一个结构体
  UINT64 用 %I64d 输出
  */
  UINT64 nTotalBytes    = 0;
  UINT64 nFreeBytes     = 0;
  GetDiskFreeSpaceEx( pszDrive, (PULARGE_INTEGER)&nFreeAvailable,
    (PULARGE_INTEGER)&nTotalBytes, (PULARGE_INTEGER)&nFreeBytes );
  printf( "FreeAvailable:%I64dGB Total:%I64dGB Free:%I64dGB\n",
    nFreeAvailable / 1024 / 1024 / 1024, nTotalBytes / 1024 / 1024 / 1024, nFreeBytes / 1024 / 1024 / 1024 );
}
//获取磁盘信息
void ShowVolumneInfo( LPSTR pszDrive )
{
  CHAR szVolumneName[256]   = { 0 };
  DWORD nVolumneSerial      = 0;
  DWORD nMaxLength          = 0;
  DWORD nFileSystem         = 0;
  CHAR szFileSystem[256]    = { 0 };
  //获取卷信息
  GetVolumeInformation( pszDrive, szVolumneName, 256,
    &nVolumneSerial, &nMaxLength, &nFileSystem,
    szFileSystem, 256 );
  printf( "\tName=%s Serial=%08X Length=%d FileSystem=%08X FileSystemInfo=%s\n", szVolumneName,
    nVolumneSerial, nMaxLength, nFileSystem,
    szFileSystem );
}
//获取盘的类型
void ShowType( LPSTR pszDrive )
{
  UINT nType = GetDriveType( pszDrive );
  switch (nType)
  {
  case DRIVE_FIXED:
    printf( "%s：硬盘\n" ,pszDrive );
    break;
  case DRIVE_CDROM:
    printf( "%s：光驱\n" ,pszDrive );
    break;
  case DRIVE_REMOVABLE:
    printf( "%s：移动硬盘\n" ,pszDrive );
    break;
  default:
    printf( "%s暂未识别,未识别号：%d\n", pszDrive, nType );
    break;
  }
}
void ShowVolumn( )
{
  CHAR szText[256] = { 0 };
  DWORD nDrives = GetLogicalDrives( );
  printf( "nDrives:%08X\n", nDrives );
  GetLogicalDriveStrings( 256, szText );
  CHAR *pszTmp = szText; //定义一个临时接管指针
  while (0!=pszTmp[0])
  {
    printf( "Drives:%s\n", pszTmp );
    ShowType( pszTmp );
    ShowVolumneInfo( pszTmp );
    ShowSpace( pszTmp );
    pszTmp = strlen( pszTmp ) + 1 + pszTmp;
  }
}
int _tmain(int argc, _TCHAR* argv[])
{
  ShowVolumn( );
	return 0;
}