historyeditdemodlg.cpp

C++编程实践与技巧一书各章节的源码

// HistoryEditDemoDlg.cpp : implementation file
//

#include "stdafx.h"
#include "HistoryEditDemo.h"
#include "HistoryEditDemoDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CHistoryEditDemoDlg dialog

CHistoryEditDemoDlg::CHistoryEditDemoDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CHistoryEditDemoDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CHistoryEditDemoDlg)
		// 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);
}

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

BEGIN_MESSAGE_MAP(CHistoryEditDemoDlg, CDialog)
	//{{AFX_MSG_MAP(CHistoryEditDemoDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(BUTTON_ADD, OnAdd)
	ON_BN_CLICKED(BUTTON_CLEAR, OnClear)
	ON_BN_CLICKED(BUTTON_CLOSE, OnClose)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CHistoryEditDemoDlg message handlers

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

	// 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
	
	// Subclass the history edit control
  m_HistoryEdit.SubclassDlgItem (EDIT_HISTORY, this);
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CHistoryEditDemoDlg::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 CHistoryEditDemoDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CHistoryEditDemoDlg::OnAdd() 
{
CString   strText;

  GetDlgItemText (EDIT_TEXT, strText);
  m_HistoryEdit.AppendString (strText);
  SetDlgItemText (EDIT_TEXT, "");
}

void CHistoryEditDemoDlg::OnClear() 
{
  SetDlgItemText (EDIT_HISTORY, "");
}

void CHistoryEditDemoDlg::OnClose() 
{
  CDialog::OnOK();
}