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copied!<p>Personally I did this only once: I've extended CEdit class and ovverided the PretranslateMessage. Here's the code:</p> <p>// .h</p> <pre><code>#pragma once // CHexEdit #define WM_RETURN_PRESSED WM_USER + 5 #define WM_NUMBER_INSERTED WM_USER + 6 class CHexEdit : public CEdit { DECLARE_DYNAMIC( CHexEdit ) public: CHexEdit(); virtual ~CHexEdit(); protected: DECLARE_MESSAGE_MAP() public: afx_msg void OnKeyUp( UINT nChar, UINT nRepCnt, UINT nFlags ); virtual BOOL PreTranslateMessage( MSG* pMsg ); }; // .cpp #include "stdafx.h" #include "HexEdit.h" #include "Utils.h" // CHexEdit IMPLEMENT_DYNAMIC( CHexEdit, CEdit ) CHexEdit::CHexEdit() { } CHexEdit::~CHexEdit() { } BEGIN_MESSAGE_MAP( CHexEdit, CEdit ) ON_WM_KEYUP() END_MESSAGE_MAP() // CHexEdit message handlers BOOL CHexEdit::PreTranslateMessage( MSG* pMsg ) { bool bAFChars; bool b09Chars; bool bValidInput; bool bControlChars; BOOL bOK; if ( pMsg->message == WM_KEYDOWN ) { bAFChars = pMsg->wParam >= 'A' && pMsg->wParam <= 'F'; bAFChars |= pMsg->wParam >= 'a' && pMsg->wParam <= 'f'; b09Chars = pMsg->wParam >= '0' && pMsg->wParam <= '9'; bValidInput = bAFChars || b09Chars; bControlChars = pMsg->wParam >= 0x08 && pMsg->wParam <= 0x2F; bControlChars = bControlChars || ( pMsg->wParam >= 0x5B && pMsg->wParam <= 0x5F ); bControlChars = bControlChars || ( pMsg->wParam >= VK_NUMPAD0 && pMsg->wParam <= VK_NUMPAD9 ); if ( bValidInput || bControlChars ) { bOK = TRUE; } else { bOK = FALSE; } if ( !bOK ) return TRUE; // Non fare la pre-translate. } return CEdit::PreTranslateMessage(pMsg); } void CHexEdit::OnKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags) { CString strValue; switch( nChar ) { case VK_RETURN: /*GetParent()->PostMessage( WM_RETURN_PRESSED, 0, ( LPARAM )byNewValue );*/ break; default: GetParent()->PostMessage( WM_NUMBER_INSERTED, 16 ); break; } CEdit::OnKeyUp(nChar, nRepCnt, nFlags); } </code></pre> <p>Obviously you have to catch the message on your container class, but this should not be a problem. Hope this will help to solve your problem. Lemme know.</p>

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