www.pudn.com > ListCtrl功能扩展.rar > InPlaceCombo.cpp

/******************************************************************************* 
	Author						: Aravindan Premkumar 
	Unregistered Copyright 2003	: Aravindan Premkumar 
	All Rights Reserved 
	 
	This piece of code does not have any registered copyright and is free to be  
	used as necessary. The user is free to modify as per the requirements. As a 
	fellow developer, all that I expect and request for is to be given the  
	credit for intially developing this reusable code by not removing my name as  
	the author. 
*******************************************************************************/ 
 
#include "stdafx.h" 
#include "InPlaceCombo.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// CInPlaceCombo 
 
CInPlaceCombo* CInPlaceCombo::m_pInPlaceCombo = NULL;  
 
CInPlaceCombo::CInPlaceCombo() 
{ 
	m_iRowIndex = -1; 
	m_iColumnIndex = -1; 
	m_bESC = FALSE; 
} 
 
CInPlaceCombo::~CInPlaceCombo() 
{ 
} 
 
BEGIN_MESSAGE_MAP(CInPlaceCombo, CComboBox) 
	//{{AFX_MSG_MAP(CInPlaceCombo) 
	ON_WM_CREATE() 
	ON_WM_KILLFOCUS() 
	ON_WM_CHAR() 
	ON_CONTROL_REFLECT(CBN_CLOSEUP, OnCloseup) 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CInPlaceCombo message handlers 
 
int CInPlaceCombo::OnCreate(LPCREATESTRUCT lpCreateStruct)  
{ 
	if (CComboBox::OnCreate(lpCreateStruct) == -1) 
	{ 
		return -1; 
	} 
	 
	// Set the proper font 
	CFont* pFont = GetParent()->GetFont(); 
	SetFont(pFont); 
	 
	SetFocus(); 
 
	ResetContent();  
	for (POSITION Pos_ = m_DropDownList.GetHeadPosition(); Pos_ != NULL;) 
	{ 
		AddString((LPCTSTR) (m_DropDownList.GetNext(Pos_))); 
	} 
 
	return 0; 
} 
 
BOOL CInPlaceCombo::PreTranslateMessage(MSG* pMsg)  
{ 
	// If the message if for "Enter" or "Esc" 
	// Do not process 
	if (pMsg->message == WM_KEYDOWN) 
	{ 
		if(pMsg->wParam == VK_RETURN || pMsg->wParam == VK_ESCAPE) 
		{ 
			::TranslateMessage(pMsg); 
			::DispatchMessage(pMsg); 
			// DO NOT process further 
			return TRUE;				 
		} 
	} 
	 
	return CComboBox::PreTranslateMessage(pMsg); 
} 
 
void CInPlaceCombo::OnKillFocus(CWnd* pNewWnd)  
{ 
	CComboBox::OnKillFocus(pNewWnd); 
	 
	// Get the current selection text 
	CString str; 
	GetWindowText(str); 
 
	// Send Notification to parent of ListView ctrl 
	LV_DISPINFO dispinfo; 
	dispinfo.hdr.hwndFrom = GetParent()->m_hWnd; 
	dispinfo.hdr.idFrom = GetDlgCtrlID(); 
	dispinfo.hdr.code = LVN_ENDLABELEDIT; 
 
	dispinfo.item.mask = LVIF_TEXT; 
	dispinfo.item.iItem = m_iRowIndex; 
	dispinfo.item.iSubItem = m_iColumnIndex; 
	dispinfo.item.pszText = m_bESC ? LPTSTR((LPCTSTR)m_strWindowText) : LPTSTR((LPCTSTR)str); 
	dispinfo.item.cchTextMax = m_bESC ? m_strWindowText.GetLength() : str.GetLength(); 
	 
	GetParent()->SendMessage(WM_NOTIFY, GetParent()->GetDlgCtrlID(), (LPARAM)&dispinfo); 
 
	// Close the control 
	PostMessage(WM_CLOSE); 
} 
 
void CInPlaceCombo::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)  
{ 
	// If the key is "Esc" set focus back to the list control 
	if (nChar == VK_ESCAPE || nChar == VK_RETURN) 
	{ 
		if (nChar == VK_ESCAPE) 
		{ 
			m_bESC = TRUE; 
		} 
 
		GetParent()->SetFocus(); 
		return; 
	} 
	 
	CComboBox::OnChar(nChar, nRepCnt, nFlags); 
} 
 
void CInPlaceCombo::OnCloseup()  
{ 
	// Set the focus to the parent list control 
	GetParent()->SetFocus(); 
} 
 
CInPlaceCombo* CInPlaceCombo::GetInstance() 
{ 
	if(m_pInPlaceCombo == NULL) 
	{ 
		m_pInPlaceCombo = new CInPlaceCombo; 
	} 
	return m_pInPlaceCombo; 
} 
 
void CInPlaceCombo::DeleteInstance() 
{ 
	delete m_pInPlaceCombo; 
	m_pInPlaceCombo = NULL; 
} 
 
BOOL CInPlaceCombo::ShowComboCtrl(DWORD dwStyle, const CRect &rCellRect, CWnd* pParentWnd, UINT uiResourceID, 
								  int iRowIndex, int iColumnIndex, CStringList* pDropDownList,  
								  CString strCurSelecetion /*= ""*/, int iCurSel /*= -1*/) 
{ 
 
	m_iRowIndex = iRowIndex; 
	m_iColumnIndex = iColumnIndex; 
	m_bESC = FALSE; 
	 
	m_DropDownList.RemoveAll();  
	m_DropDownList.AddTail(pDropDownList); 
 
	BOOL bRetVal = TRUE; 
 
	if (-1 != iCurSel) 
	{ 
		GetLBText(iCurSel, m_strWindowText); 
	} 
	else if (!strCurSelecetion.IsEmpty())  
	{ 
		m_strWindowText = strCurSelecetion; 
	} 
	 
	if (NULL == m_pInPlaceCombo->m_hWnd)  
	{ 
		bRetVal = m_pInPlaceCombo->Create(dwStyle, rCellRect, pParentWnd, uiResourceID);  
	} 
 
	SetCurSel(iCurSel); 
 
	return bRetVal; 
}