www.pudn.com > RichEditGrid_src.zip > InPlaceEdit.cpp
// InPlaceEdit.cpp : implementation file
//
// Adapted by Chris Maunder
// Copyright (c) 1998-2002. All Rights Reserved.
//
// The code contained in this file is based on the original
// CInPlaceEdit from http://www.codeguru.com/listview/edit_subitems.shtml
//
// This code may be used in compiled form in any way you desire. This
// file may be redistributed unmodified by any means PROVIDING it is
// not sold for profit without the authors written consent, and
// providing that this notice and the authors name and all copyright
// notices remains intact.
//
// An email letting me know how you are using it would be nice as well.
//
// This file is provided "as is" with no expressed or implied warranty.
// The author accepts no liability for any damage/loss of business that
// this product may cause.
//
// For use with CGridCtrl v2.10+
//
// History:
// 10 May 1998 Uses GVN_ notifications instead of LVN_,
// Sends notification messages to the parent,
// instead of the parent's parent.
// 15 May 1998 There was a problem when editing with the in-place editor,
// there arises a general protection fault in user.exe, with a
// few qualifications:
// (1) This only happens with owner-drawn buttons;
// (2) This only happens in Win95
// (3) This only happens if the handler for the button does not
// create a new window (even an AfxMessageBox will avoid the
// crash)
// (4) This will not happen if Spy++ is running.
// PreTranslateMessage was added to route messages correctly.
// (Matt Weagle found and fixed this problem)
// 26 Jul 1998 Removed the ES_MULTILINE style - that fixed a few probs!
// 6 Aug 1998 Added nID to the constructor param list
// 6 Sep 1998 Space no longer clears selection when starting edit (Franco Bez)
// 10 Apr 1999 Enter, Tab and Esc key prob fixed (Koay Kah Hoe)
// Workaround for bizzare "shrinking window" problem in CE
//
/////////////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "TCHAR.h"
#include "InPlaceEdit.h"
#include "GridCtrl.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CInPlaceEdit
CInPlaceEdit::CInPlaceEdit(CWnd* pParent, CRect& rect, DWORD dwStyle, UINT nID,
int nRow, int nColumn, CString sInitText,
UINT nFirstChar)
{
m_sInitText = sInitText;
m_nRow = nRow;
m_nColumn = nColumn;
m_nLastChar = 0;
m_bExitOnArrows = (nFirstChar != VK_LBUTTON); // If mouse click brought us here,
// then no exit on arrows
m_Rect = rect; // For bizarre CE bug.
DWORD dwEditStyle = WS_BORDER|WS_CHILD|WS_VISIBLE| ES_AUTOHSCROLL //|ES_MULTILINE
| dwStyle;
if (!Create(dwEditStyle, rect, pParent, nID)) return;
SetFont(pParent->GetFont());
SetWindowText(sInitText);
SetFocus();
switch (nFirstChar){
case VK_LBUTTON:
case VK_RETURN: SetSel((int)_tcslen(m_sInitText), -1); return;
case VK_BACK: SetSel((int)_tcslen(m_sInitText), -1); break;
case VK_TAB:
case VK_DOWN:
case VK_UP:
case VK_RIGHT:
case VK_LEFT:
case VK_NEXT:
case VK_PRIOR:
case VK_HOME:
case VK_SPACE:
case VK_END: SetSel(0,-1); return;
default: SetSel(0,-1);
}
// Added by KiteFly. When entering DBCS chars into cells the first char was being lost
// SenMessage changed to PostMessage (John Lagerquist)
if( nFirstChar < 0x80)
PostMessage(WM_CHAR, nFirstChar);
else
PostMessage(WM_IME_CHAR, nFirstChar);
}
CInPlaceEdit::~CInPlaceEdit()
{
}
BEGIN_MESSAGE_MAP(CInPlaceEdit, CEdit)
//{{AFX_MSG_MAP(CInPlaceEdit)
ON_WM_KILLFOCUS()
ON_WM_CHAR()
ON_WM_KEYDOWN()
ON_WM_GETDLGCODE()
ON_WM_CREATE()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
////////////////////////////////////////////////////////////////////////////
// CInPlaceEdit message handlers
// If an arrow key (or associated) is pressed, then exit if
// a) The Ctrl key was down, or
// b) m_bExitOnArrows == TRUE
void CInPlaceEdit::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
{
if ((nChar == VK_PRIOR || nChar == VK_NEXT ||
nChar == VK_DOWN || nChar == VK_UP ||
nChar == VK_RIGHT || nChar == VK_LEFT) &&
(m_bExitOnArrows || GetKeyState(VK_CONTROL) < 0))
{
m_nLastChar = nChar;
GetParent()->SetFocus();
return;
}
CEdit::OnKeyDown(nChar, nRepCnt, nFlags);
}
// As soon as this edit loses focus, kill it.
void CInPlaceEdit::OnKillFocus(CWnd* pNewWnd)
{
CEdit::OnKillFocus(pNewWnd);
EndEdit();
}
void CInPlaceEdit::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)
{
if (nChar == VK_TAB || nChar == VK_RETURN)
{
m_nLastChar = nChar;
GetParent()->SetFocus(); // This will destroy this window
return;
}
if (nChar == VK_ESCAPE)
{
SetWindowText(m_sInitText); // restore previous text
m_nLastChar = nChar;
GetParent()->SetFocus();
return;
}
CEdit::OnChar(nChar, nRepCnt, nFlags);
// Resize edit control if needed
// Get text extent
CString str;
GetWindowText( str );
// add some extra buffer
str += _T(" ");
CWindowDC dc(this);
CFont *pFontDC = dc.SelectObject(GetFont());
CSize size = dc.GetTextExtent( str );
dc.SelectObject( pFontDC );
// Get client rect
CRect ParentRect;
GetParent()->GetClientRect( &ParentRect );
// Check whether control needs to be resized
// and whether there is space to grow
if (size.cx > m_Rect.Width())
{
if( size.cx + m_Rect.left < ParentRect.right )
m_Rect.right = m_Rect.left + size.cx;
else
m_Rect.right = ParentRect.right;
MoveWindow( &m_Rect );
}
}
UINT CInPlaceEdit::OnGetDlgCode()
{
return DLGC_WANTALLKEYS;
}
////////////////////////////////////////////////////////////////////////////
// CInPlaceEdit overrides
// Stoopid win95 accelerator key problem workaround - Matt Weagle.
BOOL CInPlaceEdit::PreTranslateMessage(MSG* pMsg)
{
// Catch the Alt key so we don't choke if focus is going to an owner drawn button
if (pMsg->message == WM_SYSCHAR)
return TRUE;
return CWnd::PreTranslateMessage(pMsg);
}
// Auto delete
void CInPlaceEdit::PostNcDestroy()
{
CEdit::PostNcDestroy();
delete this;
}
////////////////////////////////////////////////////////////////////////////
// CInPlaceEdit implementation
void CInPlaceEdit::EndEdit()
{
CString str;
// EFW - BUG FIX - Clicking on a grid scroll bar in a derived class
// that validates input can cause this to get called multiple times
// causing assertions because the edit control goes away the first time.
static BOOL bAlreadyEnding = FALSE;
if(bAlreadyEnding)
return;
bAlreadyEnding = TRUE;
GetWindowText(str);
// Send Notification to parent
GV_DISPINFO dispinfo;
dispinfo.hdr.hwndFrom = GetSafeHwnd();
dispinfo.hdr.idFrom = GetDlgCtrlID();
dispinfo.hdr.code = GVN_ENDLABELEDIT;
dispinfo.item.mask = LVIF_TEXT|LVIF_PARAM;
dispinfo.item.row = m_nRow;
dispinfo.item.col = m_nColumn;
dispinfo.item.strText = str;
dispinfo.item.lParam = (LPARAM) m_nLastChar;
CWnd* pOwner = GetOwner();
if (pOwner)
pOwner->SendMessage(WM_NOTIFY, GetDlgCtrlID(), (LPARAM)&dispinfo );
// Close this window (PostNcDestroy will delete this)
if (IsWindow(GetSafeHwnd()))
SendMessage(WM_CLOSE, 0, 0);
bAlreadyEnding = FALSE;
}