Improved CEdit control

// EditExAppDlg.cpp : implementation file
//

#include "stdafx.h"
#include "EditExApp.h"
#include "EditExAppDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CEditExAppDlg dialog


CEditExAppDlg::CEditExAppDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CEditExAppDlg::IDD, pParent)
	, m_strEditExSingleLine(_T("Single-line"))
	, m_strEditExMultiLine(_T("Multi-line"))
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CEditExAppDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	DDX_Control(pDX, IDC_EDITEX_SINGLELINE, m_ctlEditExSingleLine);
	DDX_Text(pDX, IDC_EDITEX_SINGLELINE, m_strEditExSingleLine);
	DDX_Control(pDX, IDC_EDITEX_MULTILINE, m_ctlEditExMultiline);
	DDX_Text(pDX, IDC_EDITEX_MULTILINE, m_strEditExMultiLine);
}

BEGIN_MESSAGE_MAP(CEditExAppDlg, CDialog)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_INSERT_SINGLELINE, &CEditExAppDlg::OnBnClickedSingleLine)
	ON_BN_CLICKED(IDC_BUTTON_INSERT_MULTILINE, &CEditExAppDlg::OnBnClickedMultiLine)
END_MESSAGE_MAP()


// CEditExAppDlg message handlers

BOOL CEditExAppDlg::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)
	{
		BOOL bNameValid;
		CString strAboutMenu;
		bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);
		ASSERT(bNameValid);
		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
}

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

		SendMessage(WM_ICONERASEBKGND, reinterpret_cast<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 function to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CEditExAppDlg::OnQueryDragIcon()
{
	return static_cast<HCURSOR>(m_hIcon);
}

void CEditExAppDlg::OnBnClickedSingleLine()
{
	UpdateData(TRUE);
	m_strEditExSingleLine = _T("Text");
	UpdateData(FALSE);
}

void CEditExAppDlg::OnBnClickedMultiLine()
{
	UpdateData(TRUE);
	m_strEditExMultiLine = _T("Text");
	UpdateData(FALSE);
}