学习c++一点一滴获取所有本地磁盘信息

GetLogicalDriveStrings - 获取系统中存在的逻辑驱动器字符串

GetLogicalDriveStrings(
  nBufferLength: DWORD; {缓冲区大小}
  lpBuffer: PAnsiChar   {缓冲区}
): DWORD;

获取磁盘名称填充到lpbuffer.

GetVolumeInformation - 读取文件系统信息

GetVolumeInformation(
  lpRootPathName: PChar;               {磁盘驱动器代码字符串}
  lpVolumeNameBuffer: PChar;           {磁盘驱动器卷标名称}
  nVolumeNameSize: DWORD;              {磁盘驱动器卷标名称长度}
  lpVolumeSerialNumber: PDWORD;        {磁盘驱动器卷标序列号}
  var lpMaximumComponentLength: DWORD; {系统允许的最大文件名长度}
  var lpFileSystemFlags: DWORD;        {文件系统标识}
  lpFileSystemNameBuffer: PChar;       {文件操作系统名称}
  nFileSystemNameSize: DWORD           {文件操作系统名称长度}
): BOOL;

GetDiskFreeSpaceEx - 获取磁盘容量信息

BOOL GetDiskFreeSpace(
  LPCTSTR lpRootPathName,   
  LPDWORD lpSectorsPerCluster,   
  LPDWORD lpBytesPerSector,
  LPDWORD lpNumberOfFreeClusters,
  LPDWORD lpTotalNumberOfClusters
);

demo自己看看吧，其实也没多少难点，难点就在于api的参数。继续理解中。。

// disk.cpp : 定义控制台应用程序的入口点。
//

#include "stdafx.h"
#include <windows.h>
#include <iostream>
using namespace std;


int _tmain(int argc, _TCHAR* argv[])
{
    DWORD dwNeed;
    DWORD dwBufferLength;
    TCHAR lpBuffer[128];
    LPTSTR lpDisk;
    UINT uType;

    ULARGE_INTEGER FreeBytesAvailable;
    ULARGE_INTEGER TotalNumberOfBytes;
    ULARGE_INTEGER TotalNumberOfFreeBytes;



    BOOL dwReturn;
    TCHAR  *lpRootPathName;
    TCHAR  lpVolumeNameBuffer[12]     = {0};
    TCHAR  lpFileSystemNameBuffer[10] = {0};
    DWORD  dwVolumeNameSize           = 12;
    DWORD  dwFileSystemNameSize       = 10;
    DWORD  dwVolumeSerialNumber;
    DWORD  dwMaximumComponentLength;
       DWORD  dwFileSystemFlags;

    dwNeed=128;
    do
    {
        dwBufferLength=dwNeed;
        dwNeed=GetLogicalDriveStrings(dwBufferLength,lpBuffer);
        if(dwNeed==0)
        {
            return FALSE;
        }
    }while(dwNeed>dwBufferLength);
    for(lpDisk=lpBuffer;*lpDisk;lpDisk+=wcslen(lpDisk)+1)
    {
        uType=GetDriveType(lpDisk);
        switch(uType)
        {
        case DRIVE_UNKNOWN:
            wcout<<*lpDisk<<"Type:UNKNOWN";
            break;
        case DRIVE_NO_ROOT_DIR:
            wcout<<*lpDisk<<":Type:NO_ROOT_DIR";
            break;
        case DRIVE_REMOVABLE:
            wcout<<*lpDisk<<":Type:REMOVABLE";
            break;
        case DRIVE_FIXED:
            wcout<<*lpDisk<<":Type:FIXED";
            break;
        case DRIVE_REMOTE:
            wcout<<*lpDisk<<":Type:REMOTE";
            break;
        case DRIVE_CDROM:
            wcout<<*lpDisk<<":Type:CDROM";
            break;
        case DRIVE_RAMDISK:
            wcout<<*lpDisk<<":Type:RAMDISK";
            break;
        default:
            cout<<"Type:ERROR";
            break;
        }
        lpRootPathName = lpDisk;
        dwReturn = GetVolumeInformation(lpRootPathName,lpVolumeNameBuffer,
                                        dwVolumeNameSize,&dwVolumeSerialNumber,
                                         &dwMaximumComponentLength,&dwFileSystemFlags,
                                        lpFileSystemNameBuffer,dwFileSystemNameSize);
        wcout<<"---"<<dwVolumeSerialNumber<<"---"<<lpFileSystemNameBuffer;

        dwReturn = GetDiskFreeSpaceEx(lpRootPathName,&FreeBytesAvailable,
                                      &TotalNumberOfBytes,&TotalNumberOfFreeBytes);

        wcout<<"---"<<TotalNumberOfBytes.QuadPart/(1024*1024)<<"---"<<TotalNumberOfFreeBytes.QuadPart/(1024*1024)<<"---"<<100-100*TotalNumberOfFreeBytes.QuadPart/TotalNumberOfBytes.QuadPart<<endl;

    }



    
    return 0;
}

demo中有点小错误，还没改，会改的提出下