25.系统信息的获取

1.获取当前用户名称
GetUserName

DWORD dwLen = UNLEN + 1;
	TCHAR szUserName[UNLEN + 1] = { 0 };
	GetUserName(szUserName, &dwLen);
	MessageBox(szUserName);

2.获取计算机的名称
GetComputerName

DWORD dwLen = MAX_COMPUTERNAME_LENGTH + 1;
	TCHAR szComputerName[MAX_COMPUTERNAME_LENGTH + 1] = { 0 };
	GetComputerName(szComputerName, &dwLen);
	MessageBox(szComputerName);

3.获取CPU的描述信息

CString GetCpuDescription()
{
	CString strCPU;
	HKEY hKey = NULL;
	LONG IRet = RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("Hardware\\Description\\System\\CentralProcessor\\0"), 0, KEY_QUERY_VALUE, &hKey);
	if (IRet == ERROR_SUCCESS)
	{
		DWORD dwSize = 0;
		BYTE *pszBuf = NULL;
		IRet = RegQueryValueEx(hKey, _T("ProcessorNameString"), NULL, NULL, NULL, &dwSize);
		if (IRet == 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.获取内存大小

DWORD GetMemoryInfo()
{
	DWORD dwMemSpace = 0;
	MEMORYSTATUSEX memStatus = { 0 };
	memStatus.dwLength = sizeof(MEMORYSTATUSEX);
	GlobalMemoryStatusEx(&memStatus);
	dwMemSpace = (QWORD)(memStatus.ullTotalPhys/ 1024 / 1024);//以M为单位
	return dwMemSpace;
}

5.获取磁盘列表及容量信息

CString enumDrivers()
{
	UINT nCount = 0;
	CString strDrivers;
	TCHAR *pBuf = NULL;
	//每个盘符占用4个字符
	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++)
		{
			strDrivers.AppendFormat(_T("%s,%s"), pBuf, _T("\r\n"));
			pBuf += 4;
		}
	}
	return strDrivers;
}

硬盘类型: GetDriveType

硬盘空间

CString GetDriveSpaceInfo(CString strDrive)
{
	CString strInfo;
	ULARGE_INTEGER nFreeBytesAvailable = { 0 };
	ULARGE_INTEGER nTotalNumberOfBytes = { 0 };
	ULARGE_INTEGER nTotalNumberOfFreeBytes = { 0 };

	if (GetDiskFreeSpaceEx(strDrive, &nFreeBytesAvailable, &nTotalNumberOfBytes, &nTotalNumberOfFreeBytes))
	{
		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 "), dFreeBytesAvailable, dTotalNumberOfBytes, dTotalNumberOfFreeBytes);
	
	}
	return strInfo;

}