view release on metacpan or  search on metacpan

Win32-GUI_Grid/MFCGrid/GridCellCombo.cpp  view on Meta::CPAN

// GridCellCombo.cpp : implementation file
//
// MFC Grid Control - Main grid cell class
//
// Provides the implementation for a combobox cell type of the
// grid control.
//
// Written by Chris Maunder <cmaunder@mail.com>
// Copyright (c) 1998-2001. All Rights Reserved.
//
// Parts of the code contained in this file are based on the original
// CInPlaceList from http://www.codeguru.com/listview
//
// 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 v2.22+
//
// History:
// 6 Aug 1998 - Added CComboEdit to subclass the edit control - code 
//              provided by Roelf Werkman <rdw@inn.nl>. Added nID to 
//              the constructor param list.
// 29 Nov 1998 - bug fix in onkeydown (Markus Irtenkauf)
// 13 Mar 2004 - GetCellExtent fixed by Yogurt
//
/////////////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "GridCell.h"
#include "GridCtrl.h"

#include "GridCellCombo.h"


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


/////////////////////////////////////////////////////////////////////////////
// CComboEdit

CComboEdit::CComboEdit()
{
}

CComboEdit::~CComboEdit()
{
}

// Stoopid win95 accelerator key problem workaround - Matt Weagle.
BOOL CComboEdit::PreTranslateMessage(MSG* pMsg) 
{
	// Make sure that the keystrokes continue to the appropriate handlers

Win32-GUI_Grid/MFCGrid/GridCellCombo.cpp  view on Meta::CPAN

        pOwner->EndEdit();	
}

void CComboEdit::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) &&
		(GetKeyState(VK_CONTROL) < 0 && GetDlgCtrlID() == IDC_COMBOEDIT))
    {
        CWnd* pOwner = GetOwner();
        if (pOwner)
            pOwner->SendMessage(WM_KEYDOWN, nChar, nRepCnt+ (((DWORD)nFlags)<<16));
        return;
    }

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

void CComboEdit::OnKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	if (nChar == VK_ESCAPE) 
	{
        CWnd* pOwner = GetOwner();
        if (pOwner)
            pOwner->SendMessage(WM_KEYUP, nChar, nRepCnt + (((DWORD)nFlags)<<16));
        return;
    }

	if (nChar == VK_TAB || nChar == VK_RETURN || nChar == VK_ESCAPE)
    {
        CWnd* pOwner = GetOwner();
        if (pOwner)
            pOwner->SendMessage(WM_KEYUP, nChar, nRepCnt + (((DWORD)nFlags)<<16));
        return;
    }

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


/////////////////////////////////////////////////////////////////////////////
// CInPlaceList

CInPlaceList::CInPlaceList(CWnd* pParent, CRect& rect, DWORD dwStyle, UINT nID,
                           int nRow, int nColumn, 
                           COLORREF crFore, COLORREF crBack,
						   CStringArray& Items, CString sInitText, 
						   UINT nFirstChar)
{
    m_crForeClr = crFore;
    m_crBackClr = crBack;

	m_nNumLines = 4;
	m_sInitText = sInitText;
 	m_nRow		= nRow;
 	m_nCol      = nColumn;
 	m_nLastChar = 0; 
	m_bExitOnArrows = FALSE; //(nFirstChar != VK_LBUTTON);	// If mouse click brought us here,

	// Create the combobox
 	DWORD dwComboStyle = WS_BORDER|WS_CHILD|WS_VISIBLE|WS_VSCROLL|
 					     CBS_AUTOHSCROLL | dwStyle;
	int nHeight = rect.Height();
	rect.bottom = rect.bottom + m_nNumLines*nHeight + ::GetSystemMetrics(SM_CYHSCROLL);
	if (!Create(dwComboStyle, rect, pParent, nID)) return;

	// Add the strings
	for (int i = 0; i < Items.GetSize(); i++) 
		AddString(Items[i]);

	SetFont(pParent->GetFont());
	SetItemHeight(-1, nHeight);

    int nMaxLength = GetCorrectDropWidth();
    /*
    if (nMaxLength > rect.Width())
	    rect.right = rect.left + nMaxLength;
	// Resize the edit window and the drop down window
	MoveWindow(rect);
    */

	SetDroppedWidth(nMaxLength);

	SetHorizontalExtent(0); // no horz scrolling

	// Set the initial text to m_sInitText
    if (::IsWindow(m_hWnd) && SelectString(-1, m_sInitText) == CB_ERR) 
		SetWindowText(m_sInitText);		// No text selected, so restore what was there before

    ShowDropDown();

    // Subclass the combobox edit control if style includes CBS_DROPDOWN
    if ((dwStyle & CBS_DROPDOWNLIST) != CBS_DROPDOWNLIST)
    {
        m_edit.SubclassDlgItem(IDC_COMBOEDIT, this);
 	    SetFocus();
        switch (nFirstChar)
        {
            case VK_LBUTTON: 
            case VK_RETURN:   m_edit.SetSel((int)_tcslen(m_sInitText), -1); return;
            case VK_BACK:     m_edit.SetSel((int)_tcslen(m_sInitText), -1); break;
            case VK_DOWN: 
            case VK_UP:   
            case VK_RIGHT:
            case VK_LEFT:  
            case VK_NEXT:  
            case VK_PRIOR: 
            case VK_HOME:  
            case VK_END:      m_edit.SetSel(0,-1); return;
            default:          m_edit.SetSel(0,-1);
        }
        SendMessage(WM_CHAR, nFirstChar);
    }
    else
 	    SetFocus();
}

CInPlaceList::~CInPlaceList()
{
}

void CInPlaceList::EndEdit()
{
    CString str;
    if (::IsWindow(m_hWnd))
        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_nCol;
    dispinfo.item.strText = str;
    dispinfo.item.lParam  = (LPARAM) m_nLastChar; 
 
    CWnd* pOwner = GetOwner();
    if (IsWindow(pOwner->GetSafeHwnd()))
        pOwner->SendMessage(WM_NOTIFY, GetDlgCtrlID(), (LPARAM)&dispinfo );
 
    // Close this window (PostNcDestroy will delete this)
    if (::IsWindow(m_hWnd))
        PostMessage(WM_CLOSE, 0, 0);
}

int CInPlaceList::GetCorrectDropWidth()
{
    const int nMaxWidth = 200;  // don't let the box be bigger than this