读取全部的驱动器的信息

作者:安静

VC6.0 W2K编译通过

这类小程序,能用的地方很多.所以就写一个完整的代码
给大家参考参考

#include "stdafx.h"
#include  <iostream.h>
const DWORD MAXLEN = 100;

void ShowDriveInfo(LPTSTR drive)
{
//输出设备类型
UINT result;
result = GetDriveType(drive);

if (result == DRIVE_REMOVABLE)
cout << "可移动设备" ;
else if (result == DRIVE_FIXED)
cout << "硬盘";
else if (result == DRIVE_REMOTE)
cout << "网络驱动器" ;
else if (result == DRIVE_CDROM )
cout << " 光驱";
else if (result == DRIVE_RAMDISK)
cout << "Ram Disk";
else if (result == DRIVE_UNKNOWN)
cout << "未知的设备";
else
return;
cout << '\t';

//给出空间信息

unsigned __int64 i64FreeBytesToCaller;
unsigned __int64 i64TotalBytes;
unsigned __int64 i64FreeBytes;

DWORD dwSectPerClust;
DWORD dwBytesPerSect;
DWORD dwFreeClusters;
DWORD dwTotalClusters;

DWORD tempTotal;
DWORD tempFree;

BOOL fResult;
typedef DWORD (WINAPI * GETDISKFREESPACEEX)(LPCTSTR ,
PULARGE_INTEGER ,
PULARGE_INTEGER ,
PULARGE_INTEGER );

GETDISKFREESPACEEX pGetDiskFreeSpaceEx;

pGetDiskFreeSpaceEx = (GETDISKFREESPACEEX)GetProcAddress( GetModuleHandle("kernel32.dll"),
"GetDiskFreeSpaceExA");

if (pGetDiskFreeSpaceEx) //如果是Windows NT and Windows 2000使用 GetDiskFreeSpaceEx
{
fResult = pGetDiskFreeSpaceEx ( (LPCTSTR)drive,
(PULARGE_INTEGER)&i64FreeBytesToCaller,
(PULARGE_INTEGER)&i64TotalBytes,
(PULARGE_INTEGER)&i64FreeBytes);

tempTotal = i64TotalBytes/1024 ;
tempFree = i64FreeBytes/1024;

}

else //如果是Windows 95 OSR2 and Windows 98 使用 GetDiskFreeSpace
{
fResult = GetDiskFreeSpace (drive,
&dwSectPerClust,
&dwBytesPerSect,
&dwFreeClusters,
&dwTotalClusters);

tempTotal = dwTotalClusters*dwBytesPerSect*dwSectPerClust/1024;
tempFree = dwFreeClusters*dwSectPerClust*dwBytesPerSect/1024;



}
if(fResult)
{
cout<<"全部磁盘容量是 "<<((float)(tempTotal)/1024/1024)<<"GB\t";
cout<<"空余磁盘容量是 "<<((float)(tempFree)/1024/1024)<<"GB\t";
}
cout<<endl;

//像光驱,软盘,不放盘的时候,GetDiskFreeSpace(Ex)会出错.

}
void GetAllDrive()
{

int len = -1;
char drive[4] ="AAA" ;
LPTSTR lpDriveString = new char[MAXLEN];
DWORD dwBufferLen = MAXLEN ;
len = GetLogicalDriveStrings(dwBufferLen,lpDriveString); //取得全部的盘符
if (len < 0)
cout << "操作失败" <<endl;
if (len > MAXLEN)
cout << "Buffer不足" <<endl;
if (len > 0)
{
for (int i = 0;i < len;i = i+4) //得到的盘符有4个字符组成 A:\(null)
{
drive[0] = lpDriveString[i]; //A
drive[1] = lpDriveString[i+1];//:
drive[2] = lpDriveString[i+2];// 第三个\
//drive[3] = '\0'; // 第四个为null字符
cout<<drive<<'\t';

ShowDriveInfo(drive);
}
}
/////////////////////////////////////////////
//另外一种方法.
///////////////////////////////////////////////
/*
char D = 'A';
char Drive[4]="X:\\";
for(int i = 0; i < 26;i++)
{
Drive[0] = (char)(D+i);
cout<<Drive<<'\t';
ShowDriveInfo(Drive);
}
*/

}

void main()
{
GetAllDrive();
}

原文转自：http://www.ltesting.net