repos_ecs/其他2015后/PropertyGrid_VC6/PropertyGridInPlaceEdit.cpp

// InPlaceEdit.cpp : implementation file
//
// Adapted by Chris Maunder <cmaunder@mail.com>
// Copyright (c) 1998-2002. All Rights Reserved.
//
// The code contained in this file is based on the original
// CPropertyGridInPlaceEdit 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 "PropertyGridInPlaceEdit.h"

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

/////////////////////////////////////////////////////////////////////////////
// CPropertyGridInPlaceEdit

CPropertyGridInPlaceEdit::CPropertyGridInPlaceEdit(CWnd* pParent, CRect& rect, DWORD dwStyle, UINT nID, string sInitText)
{
  m_sInitText     = sInitText.c_str();
  m_bExitOnArrows = FALSE;
  m_Rect = rect;  // For bizarre CE bug.

  DWORD dwEditStyle = /*WS_BORDER|*/WS_CHILD|/*WS_VISIBLE|*/ES_AUTOHSCROLL|dwStyle;
  if (!Create(dwEditStyle, rect, pParent, nID))
    return;

  m_clrBack = GetSysColor(COLOR_WINDOW);
  m_clrText = GetSysColor(COLOR_WINDOWTEXT);
  m_Brush.CreateSolidBrush(m_clrBack);

  SetFont(pParent->GetFont());

  SetWindowText(m_sInitText);
  SetFocus();

  SetSel(0, -1);
  SetSel(-1, 0);
}

CPropertyGridInPlaceEdit::~CPropertyGridInPlaceEdit()
{
}

void CPropertyGridInPlaceEdit::SetColors(COLORREF clrBack, COLORREF clrText)
{
  m_clrBack = clrBack;
  m_clrText = clrText;
  m_Brush.DeleteObject();
  m_Brush.CreateSolidBrush(m_clrBack);
}

BEGIN_MESSAGE_MAP(CPropertyGridInPlaceEdit, CEdit)
  //{{AFX_MSG_MAP(CPropertyGridInPlaceEdit)
  ON_WM_KILLFOCUS()
  ON_WM_CHAR()
  ON_WM_KEYDOWN()
  ON_WM_GETDLGCODE()
  ON_WM_CREATE()
  ON_WM_CTLCOLOR_REFLECT( )
  //}}AFX_MSG_MAP
END_MESSAGE_MAP()

////////////////////////////////////////////////////////////////////////////
// CPropertyGridInPlaceEdit 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 CPropertyGridInPlaceEdit::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))
  {
    GetParent()->SetFocus();
    return;
  }

  CEdit::OnKeyDown(nChar, nRepCnt, nFlags);
}

// As soon as this edit loses focus, kill it.
void CPropertyGridInPlaceEdit::OnKillFocus(CWnd* pNewWnd)
{
  CEdit::OnKillFocus(pNewWnd);
  EndEdit();
}

void CPropertyGridInPlaceEdit::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)
{
  if (nChar == VK_TAB || nChar == VK_RETURN)
  {
    GetParent()->SetFocus();    // This will destroy this window
    return;
  }
  if (nChar == VK_ESCAPE) 
  {
    CancelEdit();
    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 CPropertyGridInPlaceEdit::OnGetDlgCode() 
{
  return DLGC_WANTALLKEYS;
}

////////////////////////////////////////////////////////////////////////////
// CPropertyGridInPlaceEdit overrides

// Stoopid win95 accelerator key problem workaround - Matt Weagle.
BOOL CPropertyGridInPlaceEdit::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 CEdit::PreTranslateMessage(pMsg);
}

////////////////////////////////////////////////////////////////////////////
// CPropertyGridInPlaceEdit implementation

void CPropertyGridInPlaceEdit::CancelEdit()
{
  // restore previous text
  if (IsWindow(GetSafeHwnd()))
  {
    SetWindowText(m_sInitText);
    SendMessage(WM_CLOSE, 0, 0);
  }
}

void CPropertyGridInPlaceEdit::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);

  CWnd* pOwner = GetOwner();
  if (pOwner)
    pOwner->SendMessage(WM_PG_ENDLABELEDIT, (WPARAM) LPCTSTR(str), NULL );

  // Close this window (PostNcDestroy will delete this)
  if (IsWindow(GetSafeHwnd()))
    SendMessage(WM_CLOSE, 0, 0);
  bAlreadyEnding = FALSE;
}

HBRUSH CPropertyGridInPlaceEdit::CtlColor ( CDC* pDC, UINT nCtlColor )
{
  pDC->SetTextColor(m_clrText);
  pDC->SetBkColor(m_clrBack);
  return m_Brush;
}