sam_sp_31dlg.cpp

专题讲座三：内容包括跟踪与中间过程输出、变量和对象合法性检查、内存泄露检查、异常捕捉与处理等。包含源码

// sam_sp_31Dlg.cpp : implementation file
//

#include "stdafx.h"
#include "sam_sp_31.h"
#include "sam_sp_31Dlg.h"

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

class CMyButton : public CButton
{
public:
	CMyButton();
	~CMyButton(){};
public:
#ifdef _DEBUG
	virtual void Dump( CDumpContext& dc ) const;
#endif
protected:
	CString m_szHotText;//当鼠标移动过显示的文字
};

CMyButton::CMyButton():CButton()
{
	m_szHotText="not init";
}

#ifdef _DEBUG
void CMyButton::Dump( CDumpContext& dc ) const
{
	dc<<"\n";
	CButton::Dump(dc);
	dc<<"\ndump of CMyButton \ntext is "<<m_szHotText;
	dc<<"\n";
}
#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()

/////////////////////////////////////////////////////////////////////////////
// CSam_sp_31Dlg dialog

CSam_sp_31Dlg::CSam_sp_31Dlg(CWnd* pParent /*=NULL*/)
	: CDialog(CSam_sp_31Dlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CSam_sp_31Dlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	m_szTest="test_string";
}

void CSam_sp_31Dlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CSam_sp_31Dlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CSam_sp_31Dlg, CDialog)
	//{{AFX_MSG_MAP(CSam_sp_31Dlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_TEST1, OnTest1)
	ON_BN_CLICKED(IDC_TEST2, OnTest2)
	ON_BN_CLICKED(IDC_DUMP, OnDump)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSam_sp_31Dlg message handlers

BOOL CSam_sp_31Dlg::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 CSam_sp_31Dlg::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 CSam_sp_31Dlg::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 CSam_sp_31Dlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CSam_sp_31Dlg::OnTest1() 
{
	char szTest[10]="test_1";
	strcpy(szTest,"test_2");
	char szTest2[10];
	for(int i=0;i<3;i++)
	{
		sprintf(szTest2,"%d",i);
	}
}

void CSam_sp_31Dlg::OnTest2() 
{
	static int i=5,j=50;
	char szDeb[]="debug string";
	TRACE("trace i=%d j=%d\nstring=%s\n",i,j,szDeb);
	i+=1;
	j+=5;
}

void CSam_sp_31Dlg::OnDump() 
{
	CButton bu1;
	CMyButton bu2;
#ifdef _DEBUG
	bu1.Dump(afxDump);
	bu2.Dump(afxDump);
#endif
	
}