myregtrydlg.cpp

Visual C++高级编程及其项目应用开发(含源代码)

// MyRegTryDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MyRegTry.h"
#include "MyRegTryDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

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

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

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

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

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyRegTryDlg dialog

CMyRegTryDlg::CMyRegTryDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMyRegTryDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CMyRegTryDlg)
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMyRegTryDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMyRegTryDlg)
	DDX_Control(pDX, IDC_COMBO_VALUES, m_cmbValues);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMyRegTryDlg, CDialog)
	//{{AFX_MSG_MAP(CMyRegTryDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BTN_VAULES, OnBtnVaules)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyRegTryDlg message handlers

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

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	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);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CMyRegTryDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		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;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CMyRegTryDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CMyRegTryDlg::OnBtnVaules() 
{
	// TODO: Add your control notification handler code here
	// 这段代码用来演示枚举注册表键值
	HKEY lKey;	// 定义一个被打开的键的句柄
	HKEY hKey;		// 定义初始的主键
	CString psKey;	// 子键名
	long lResult; // 打开注册表某键的返回值

	CList<CString,CString&> lstValue;
	CString strLst;

	DWORD	numValues, maxLenValueName, maxLenVauleData;  // 定义关于键值的信息
	DWORD	lpType, lenValue;	// 键值的数据类型
	char    *ValueName = new char[1024];
	BYTE	*lpData = new BYTE[1024];
	DWORD	lenData;	// 定义键值的长度

	hKey = HKEY_LOCAL_MACHINE;
	psKey = "SOFTWARE\\ODBC\\ODBC.INI\\ODBC Data Sources";
	
	lResult = RegOpenKeyEx(hKey, LPCSTR(psKey), 0, KEY_READ, &lKey);
	if(ERROR_SUCCESS != lResult)
	{
		AfxMessageBox("打开注册表错误！");
		return;
	}


	lResult = RegQueryInfoKey(lKey, NULL, NULL, 0, NULL, NULL, NULL,
		&numValues, &maxLenValueName, &maxLenVauleData, NULL, NULL);

	if(ERROR_SUCCESS != lResult)
	{
		AfxMessageBox("未能正确获取该键的信息！");
		return;
	}

	for(int i = 0; ERROR_SUCCESS == lResult, i < (int)numValues; i++)
	{
		lenValue = maxLenValueName;
		lenData = 1024;

		lResult = RegEnumValue(lKey, i, ValueName, &lenValue, 0,
			&lpType, lpData, &lenData);

		strLst = ValueName;
		lstValue.AddTail(strLst);
	}

	POSITION posLst = lstValue.GetHeadPosition(); // 获取指针的初试位置
	while(posLst != NULL)
	{
		strLst = lstValue.GetNext(posLst);
		
		m_cmbValues.InsertString(-1, strLst);
	}

	delete ValueName;
	delete lpData;


}