system~2.cpp

本书所附光盘的内容包含了开发实例的所有程序源码

// SystemInfoDlg.cpp : 实现文件
//

#include "stdafx.h"
#include "SystemInfo.h"
#include "SystemInfoDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif



// 用于应用程序“关于”菜单项的 CAboutDlg 对话框

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// 对话框数据
	enum { IDD = IDD_ABOUTBOX };

	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV 支持

// 实现
protected:
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
END_MESSAGE_MAP()


// CSystemInfoDlg 对话框



CSystemInfoDlg::CSystemInfoDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CSystemInfoDlg::IDD, pParent)
	, m_strManufacturer(_T(""))
	, m_strType(_T(""))
	, m_strClock(_T(""))
	, m_strTotalMemory(_T(""))
	
	, m_strVirtual(_T(""))
	, m_strAvailable(_T(""))
	, m_strComputerName(_T(""))
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CSystemInfoDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	DDX_Text(pDX, IDC_MANUFACTURER, m_strManufacturer);
	DDX_Text(pDX, IDC_TYPE, m_strType);
	DDX_Text(pDX, IDC_CLOCK, m_strClock);
	DDX_Text(pDX, IDC_TOTALMEMORY, m_strTotalMemory);

	DDX_Text(pDX, IDC_VIRTUAL, m_strVirtual);
	DDX_Text(pDX, IDC_AVAILABLE, m_strAvailable);
	DDX_Text(pDX, IDC_NAME, m_strComputerName);
}

BEGIN_MESSAGE_MAP(CSystemInfoDlg, CDialog)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
	ON_BN_CLICKED(IDC_REFRESH, OnBnClickedRefresh)
	ON_BN_CLICKED(IDC_EXIT, OnBnClickedExit)
END_MESSAGE_MAP()


// CSystemInfoDlg 消息处理程序

BOOL CSystemInfoDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// 将\“关于...\”菜单项添加到系统菜单中。

	// IDM_ABOUTBOX 必须在系统命令范围内。
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// 设置此对话框的图标。当应用程序主窗口不是对话框时，框架将自动
	//  执行此操作
	SetIcon(m_hIcon, TRUE);			// 设置大图标
	SetIcon(m_hIcon, FALSE);		// 设置小图标

	// TODO：在此添加额外的初始化代码
	DWORD dataSize;
	DWORD nSize=MAX_COMPUTERNAME_LENGTH+1;
	char name[MAX_COMPUTERNAME_LENGTH+1];
	//设置字符串缓冲区的大小
	memset(name,0,sizeof(name));
	//获取计算机的名称
	GetComputerName(name,&nSize);
    m_strComputerName=name;

	LONG result;
	HKEY hKey;
	TCHAR data[64];
	//打开注册表的HKEY_LOCAL_MACHINE/Hardware/Decription/System/CentralProcessor/0子键
	result = ::RegOpenKeyEx(HKEY_LOCAL_MACHINE,
		"Hardware\\Description\\System\\CentralProcessor\\0", 0, KEY_QUERY_VALUE, &hKey);

	if(result == ERROR_SUCCESS)
	{
		dataSize = sizeof (data);
		//读取子键中的CPU类型信息
		::RegQueryValueEx(hKey, _T("Identifier"), NULL, NULL,
			(LPBYTE)&data, &dataSize);		
		m_strType.Format ("%s",data);
        //读取子键中的CPU厂商信息
		::RegQueryValueEx(hKey, _T("VendorIdentifier"), NULL, NULL,
			(LPBYTE)data, &dataSize);
		m_strManufacturer.Format ("%s",data);
	}
      //动态计算CPU主频
	CTimer timer;
	LONG tickslong;
	LONG tickslongextra;
    timer.Start(); Sleep(1000); 
    unsigned cpuspeed100 = (unsigned)(timer.Stop()/10000);
	tickslong = cpuspeed100/100;
	tickslongextra = cpuspeed100-(tickslong*100);
	m_strClock.Format("%ld.%ld MHz",tickslong,tickslongextra);

	LONG var;
	MEMORYSTATUS memoryStatus;

	memset (&memoryStatus, sizeof (MEMORYSTATUS), 0);
	memoryStatus.dwLength = sizeof (MEMORYSTATUS);
	//获取内存信息
	GlobalMemoryStatus (&memoryStatus);
    //计算总的内存大小
	var = memoryStatus.dwTotalPhys / 1024;
	m_strTotalMemory.Format ("%ld KB", var);
    //计算可用内存大小
	var = memoryStatus.dwAvailPhys / 1024;
	m_strAvailable.Format ("%ld KB", var);
    //计算虚拟内存的大小
	var = memoryStatus.dwTotalVirtual / 1024;
	m_strVirtual.Format ("%ld KB", var);

	UpdateData (FALSE);
	
	return TRUE;  // 除非设置了控件的焦点，否则返回 TRUE
}

void CSystemInfoDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// 如果向对话框添加最小化按钮，则需要下面的代码
//  来绘制该图标。对于使用文档/视图模型的 MFC 应用程序，
//  这将由框架自动完成。

void CSystemInfoDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // 用于绘制的设备上下文

		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);

		// 使图标在工作矩形中居中
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// 绘制图标
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

//当用户拖动最小化窗口时系统调用此函数取得光标显示。
HCURSOR CSystemInfoDlg::OnQueryDragIcon()
{
	return static_cast<HCURSOR>(m_hIcon);
}

void CSystemInfoDlg::OnBnClickedRefresh()
{
	// TODO: 在此添加控件通知处理程序代码
	//刷新CPU的时钟频率
		CTimer timer;
	LONG tickslong;
	LONG tickslongextra;
    timer.Start(); Sleep(1000); 
    unsigned cpuspeed100 = (unsigned)(timer.Stop()/10000);
	tickslong = cpuspeed100/100;
	tickslongextra = cpuspeed100-(tickslong*100);
	m_strClock.Format("%ld.%ld MHz",tickslong,tickslongextra);
    //刷新内存信息
	LONG var;
	MEMORYSTATUS memoryStatus;
	memset (&memoryStatus, sizeof (MEMORYSTATUS), 0);
	memoryStatus.dwLength = sizeof (MEMORYSTATUS);
	GlobalMemoryStatus (&memoryStatus);
	var = memoryStatus.dwAvailPhys / 1024;
	m_strAvailable.Format ("%ld KB", var);
	var = memoryStatus.dwTotalVirtual / 1024;
	m_strVirtual.Format ("%ld KB", var);
    UpdateData(FALSE);
}

void CSystemInfoDlg::OnBnClickedExit()
{
	// TODO: 在此添加控件通知处理程序代码
	OnOK();
}