Mixed Case Edit Control


The VC++ dialog editor allows you to have "any", "lower", and "upper" case characters typed into a CEditCtrl. A user of one of my apps commented that the displaying of some CEditCtrl data looked untidy, they were either lower or upper case, or even a mixture of the two cases. What was required was an an edit box that would force the left most character typed into it to upper case. If for example, e-d-i-t were to be typed, the edit box would interpret and display it as E-d-i-t. This was very easy to do by sub-classing CEditCtrl and monitoring all WM_CHAR messages in PreTranslateMessage. One should not however if the characters were to be typed into the edit control, and the first character then deleted, the old second character will not automatically become upper case. I did not require this within the CMyEditCtrl class, however perhaps could be a exercise for someone else.

To use :
  • #include "MyEditCtrl.h" in the header file of the file that you wish to use it in.
  • Add MyEditCtrl.cpp and MyEditCtrl.h to your project workspace
  • Create an edit box in the dialog editor.
  • Create a CMyEditCtrl variable in class wizard for the edit box.
// MyEditCtrl.cpp : implementation file
#include "stdafx.h"
#include "MyEditCtrl.h"

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

// CMyEditCtrl




// CMyEditCtrl message handlers
BOOL CMyEditCtrl::PreTranslateMessage(MSG* pMsg)
 // TODO: Add your specialized code here and/or call the base class
 if (pMsg->message == WM_CHAR)
  int start, end;
  GetSel(start, end);

  if (start == 0)
  pMsg->wParam = toupper(pMsg->wParam);

 return CEdit::PreTranslateMessage(pMsg);

// MyEditCtrl.h : header file
#if !defined(AFX_MYEDITCTRL_H__77B0F921_463A_11D2_BE76_0080ADB7F1BB__INCLUDED_)
#define AFX_MYEDITCTRL_H__77B0F921_463A_11D2_BE76_0080ADB7F1BB__INCLUDED_

#if _MSC_VER >= 1000
#pragma once
#endif // _MSC_VER >= 1000

// CMyEditCtrl window

class CMyEditCtrl : public CEdit
// Construction

// Attributes

// Operations

// Overrides
// ClassWizard generated virtual function overrides
 virtual BOOL PreTranslateMessage(MSG* pMsg);

// Implementation
 virtual ~CMyEditCtrl();

// Generated message map functions



// Microsoft Developer Studio will insert additional declarations immediately before
previous line.

#endif // !defined(AFX_MYEDITCTRL_H__77B0F921_463A_11D2_BE76_0080ADB7F1BB__INCLUDED_)


  • There are no comments yet. Be the first to comment!

Leave a Comment
  • Your email address will not be published. All fields are required.

Top White Papers and Webcasts

  • Complex hybrid environments can make it difficult to track interdependencies, increasing the risk of disrupting critical business services. In this white paper by EMA, you'll learn how application discovery and dependency mapping can help you: Meet granular targets for availability, cost, and time-to-revenue for cloud services. Accelerate mean time to repair (MTTR) while communicating better with stakeholders. Manage even the most complex hybrid environments more efficiently and effectively Understand the …

  • Anthony Christie, the Chief Marketing Officer for Level Communications, is responsible for customer experience, worldwide marketing and product management. In this informative asset, he shares his insights into why a private network connection to cloud-bases applications is the right decision for your enterprise. Download now to find out more.

Most Popular Programming Stories

More for Developers

RSS Feeds

Thanks for your registration, follow us on our social networks to keep up-to-date