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Enhanced Focus Edit Control with Input Filtering

, 3 Oct 2000 CPOL
An edit control that provides strong visual feedback when it has the input focus, and allows filtering of input and/or displayed characters.
focusedit.zip
focuseditdemo.zip
FocusEditDemo
Release
FocusEditDemo.exe
Res
FocusEditDemo.ico
FocusEditDemo.dsw
FocusEditDemo.clw
FocusEditDemo.dsp
// FocusEditDemoDlg.cpp : implementation file
//

#include "stdafx.h"
#include "FocusEditDemo.h"
#include	"FocusEditCtrl.h"
#include "FocusEditDemoDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CFocusEditDemoDlg dialog

CFocusEditDemoDlg::CFocusEditDemoDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CFocusEditDemoDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CFocusEditDemoDlg)
		// 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 CFocusEditDemoDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CFocusEditDemoDlg)
	DDX_Control(pDX, IDC_VALUE, m_fecValue);
	DDX_Control(pDX, IDC_USERNAME, m_fecUsername);
	DDX_Control(pDX, IDC_TID, m_fecTID);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CFocusEditDemoDlg, CDialog)
	//{{AFX_MSG_MAP(CFocusEditDemoDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CFocusEditDemoDlg message handlers

BOOL CFocusEditDemoDlg::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

	m_fecTID.SetIncludeMask( _T( "01234567890-" ) );
	m_fecValue.SetIncludeMask( _T( "01234567890-+." ) );

	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

James R. Twine
President JRTwine Software, LLC
United States United States
Programming since the age of 10, started professionally at the age of 17. Currently involved in both Client and Server side development on Win32 platforms for MC/HA/FT financial applications. Development experience with Win32, Win16, Linux and other flavors of Unix.
 
Extensive multithreaded development experience on Windows platforms using the Win32 SDK, and MFC.
 
Experience with HA/FT n-tiered Client/Server systems as well as GUI apps of varying complexity. Some experience with Game developement.
 
Having learned that the stuff you can barely get away with doing Client-side apps just does not cut it in the real "Server World", I am amazed how many 'professionals' cannot tell the difference between "works" and "correct" or try to (mis)use VB and/or MFC on server-side development projects, never considering that just because it RUNS, does not mean it runs WELL.
 
Lastly, I am also a collector of arcade games, and can perform repairs, conversions, etc. Search for my name, you will find me on lots of arcade-related documents and sites.
 
Sites of interest(?):
http://www.jrtwine.com
http://www.jrtwine.com/jtwine
http://www.signingtime.com
http://www.deletefxpfiles.com
http://www.checkfavorites.com
http://www.coinop.org

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