131 lines
3.4 KiB
C++
131 lines
3.4 KiB
C++
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// paredit.cpp: C++ derived edit control for numbers/letters etc
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//
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// This is a part of the Microsoft Foundation Classes C++ library.
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// Copyright (C) 1992-1998 Microsoft Corporation
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// All rights reserved.
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//
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// This source code is only intended as a supplement to the
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// Microsoft Foundation Classes Reference and related
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// electronic documentation provided with the library.
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// See these sources for detailed information regarding the
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// Microsoft Foundation Classes product.
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#include "stdafx.h"
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#include "ctrltest.h"
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#include "paredit.h"
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/////////////////////////////////////////////////////////////////////////////
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// ParsedEdit
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CParsedEdit::CParsedEdit()
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{
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m_wParseStyle = 0;
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}
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BEGIN_MESSAGE_MAP(CParsedEdit, CEdit)
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//{{AFX_MSG_MAP(CParsedEdit)
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ON_WM_CHAR()
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ON_WM_VSCROLL() // for associated spin controls
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//}}AFX_MSG_MAP
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END_MESSAGE_MAP()
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/////////////////////////////////////////////////////////////////////////////
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// Creating from C++ code
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BOOL CParsedEdit::Create(DWORD dwStyle, const RECT& rect,
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CWnd* pParentWnd, UINT nID)
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{
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m_wParseStyle = LOWORD(dwStyle);
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// figure out edit control style
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DWORD dwEditStyle = MAKELONG(ES_LEFT, HIWORD(dwStyle));
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return CWnd::Create(_T("EDIT"), NULL, dwEditStyle, rect, pParentWnd, nID);
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}
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/////////////////////////////////////////////////////////////////////////////
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// Aliasing on top of an existing Edit control
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BOOL CParsedEdit::SubclassEdit(UINT nID, CWnd* pParent, WORD wParseStyle)
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{
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m_wParseStyle = wParseStyle;
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return SubclassDlgItem(nID, pParent);
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}
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/////////////////////////////////////////////////////////////////////////////
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// Input character filter
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void CParsedEdit::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)
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{
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WORD type;
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if (nChar < 0x20)
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type = PES_ALL; // always allow control chars
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else if (IsCharAlphaNumeric((TCHAR)nChar) && !IsCharAlpha((TCHAR)nChar))
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type = PES_NUMBERS;
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else if (IsCharAlpha((TCHAR)nChar))
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type = PES_LETTERS;
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else
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type = PES_OTHERCHARS;
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if (m_wParseStyle & type)
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{
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CEdit::OnChar(nChar, nRepCnt, nFlags); // permitted
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}
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else
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{
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// illegal character - inform parent
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OnBadInput();
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}
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}
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/////////////////////////////////////////////////////////////////////////////
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// Spin controls will send scroll messages
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void CParsedEdit::OnVScroll(UINT nSBCode, UINT, CScrollBar*)
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{
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int nDelta = 0;
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if (nSBCode == SB_LINEDOWN)
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nDelta = -1;
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else if (nSBCode == SB_LINEUP)
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nDelta = +1;
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else
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return; // nothing special
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// set the focus to this edit item and select it all
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SetFocus();
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//Get the number in the control.
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BOOL bOk;
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int nOld = GetParent()->GetDlgItemInt(GetDlgCtrlID(), &bOk);
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if (bOk)
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{
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// The MuScrl32 control also supports range checking
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// for this example, we just prevent overflow
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int nNew = nOld + nDelta;
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if (nNew >= 0 && nNew <= 32767)
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GetParent()->SetDlgItemInt(GetDlgCtrlID(), nNew);
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else
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bOk = FALSE;
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}
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if (!bOk)
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OnBadInput();
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SetSel(0, -1);
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}
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/////////////////////////////////////////////////////////////////////////////
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// default bad input handler, beep (unless parent notification
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// returns -1. Most parent dialogs will return 0 or 1 for command
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// handlers (i.e. Beep is the default)
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void CParsedEdit::OnBadInput()
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{
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if (GetParent()->SendMessage(WM_COMMAND,
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MAKELONG(GetDlgCtrlID(), PEN_ILLEGALCHAR), (LPARAM)m_hWnd) != -1)
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{
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MessageBeep((UINT)-1);
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}
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}
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/////////////////////////////////////////////////////////////////////////////
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