vc++基础班[25]---系统信息的获取
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大家好，我是Syc
今天给大家做的教程是：
vc++基础班[25]---系统信息的获取
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①、获取当前登录用户名称：
函数为：GetUserName，准确的说此函数为获取当前线程关联的用户名称；
②、获取计算机名称：
函数为：GetComputerName，当然也可以通过 SetComputerName 函数来进行计算机名称的设置，但必须重新启动系统！
③、获取CPU的描述信息：
CString GetCpuDescription()
{
CString strCPU;
HKEY hKey = NULL;
LONG lRet = RegOpenKeyEx(HKEY_LOCAL_MACHINE,
_T("Hardware\\Description\\System\\CentralProcessor\\0") , 0, KEY_QUERY_VALUE, &hKey);
if(lRet == ERROR_SUCCESS){
DWORD dwSize = 0;
BYTE *pszBuf = NULL;
lRet = RegQueryValueEx(hKey, _T("ProcessorNameString"), NULL, NULL, NULL, &dwSize);
if(lRet == ERROR_SUCCESS && dwSize > 0){
pszBuf = new BYTE[dwSize+1];
ZeroMemory(pszBuf, dwSize+1);
RegQueryValueEx(hKey, _T("ProcessorNameString"), NULL, NULL, pszBuf, &dwSize);
}
RegCloseKey(hKey);
strCPU.Format(_T("%s"), pszBuf);
if (pszBuf) delete [] pszBuf;
}
return strCPU;
}
④、获取内存信息：
ULONGLONG GetMemoryInfo()
{
ULONGLONG dwMemSpace = 0;
MEMORYSTATUSEX memStatus = {0};
memStatus.dwLength = sizeof(MEMORYSTATUSEX);
GlobalMemoryStatusEx(&memStatus);
dwMemSpace = (ULONGLONG)(memStatus.ullTotalPhys /1024/1024);
return dwMemSpace;
}
⑤、获取磁盘列表及容量信息：
计算机存储单位：Byte、KB、MB、GB、TB、PB、EB、ZB、YB、DB、NB
////////////////////////////////////////////////////////////////////////////////
CString EnumDrives()
{
UINT nCount = 0;
CString strDrives;
TCHAR *pBuf = NULL;
//原则上来说 4*26+1 大小就够用了，每个盘符占用4个字符，也就是：C:\\0
TCHAR szBuf[MAX_PATH] = {0};
DWORD dwRet = GetLogicalDriveStrings(MAX_PATH, szBuf);
if (dwRet != 0){
nCount = dwRet/4;
pBuf = szBuf;
for (UINT idx = 0; idx < nCount; ++idx, pBuf += 4){
strDrives.AppendFormat(_T("%s%s"), pBuf, _T("\r\n"));
}
}
return strDrives;
}
CString GetDriveTypeString(CString strDrive)
{
//传递的参数至少要包含：盘符+ :
//也可以是目录的路径，但是结尾必须有\\符号
CString strDriveTpye;
UINT uType = GetDriveType(strDrive);
switch (uType)
{
case DRIVE_UNKNOWN:
strDriveTpye = _T("类型未知！");
break;
case DRIVE_NO_ROOT_DIR:
strDriveTpye = _T("指定的盘符不存在！");
break;
case DRIVE_REMOVABLE:
strDriveTpye = _T("软盘或U盘");
break;
case DRIVE_FIXED:
strDriveTpye = _T("本地硬盘或移动硬盘");
break;
case DRIVE_REMOTE:
strDriveTpye = _T("网络磁盘");
break;
case DRIVE_CDROM:
strDriveTpye = _T("CD-ROM");
break;
case DRIVE_RAMDISK:
strDriveTpye = _T("RAM 磁盘");
break;
default:
break;
}
return strDriveTpye;
}
CString GetDriveSpaceInfo(CString strDrive)
{
CString strInfo;
ULARGE_INTEGER nFreeBytesAvailable = {0};
ULARGE_INTEGER nTotalNumberOfBytes = {0};
ULARGE_INTEGER nTotalNumberOfFreeBytes = {0};
if (GetDiskFreeSpaceEx(strDrive, &nFreeBytesAvailable, &nTotalNumberOfBytes, &nTotalNumberOfFreeBytes)) {
//单位是字节
//strInfo.Format(_T("可用容量：%I64u Byte\r\n总容量：%I64u Byte\r\n所有可用容量：%I64u Byte"),
// nFreeBytesAvailable.QuadPart, nTotalNumberOfBytes.QuadPart, nTotalNumberOfFreeBytes.QuadPart);
//单位是GB
long double dFreeBytesAvailable = ((long double)(nFreeBytesAvailable.QuadPart))/(1024*1024*1024);
long double dTotalNumberOfBytes = ((long double)(nTotalNumberOfBytes.QuadPart))/(1024*1024*1024);
long double dTotalNumberOfFreeBytes = ((long double)(nTotalNumberOfFreeBytes.QuadPart))/(1024*1024*1024);
strInfo.Format(_T("可用容量：%.2Lf GB\r\n总容量：%.2Lf GB\r\n所有可用容量：%.2Lf GB"),
dFreeBytesAvailable, dTotalNumberOfBytes, dTotalNumberOfFreeBytes);
}
return strInfo;
}
