www.pudn.com > editpad_src > bcgtoolbardropsource.cpp, change:1999-11-01,size:2883b

//******************************************************************************* 
// COPYRIGHT NOTES 
// --------------- 
// This source code is a part of BCGControlBar library. 
// You may use, compile or redistribute it as part of your application  
// for free. You cannot redistribute it as a part of a software development  
// library without the agreement of the author. If the sources are  
// distributed along with the application, you should leave the original  
// copyright notes in the source code without any changes. 
// This code can be used WITHOUT ANY WARRANTIES on your own risk. 
//  
// Stas Levin <stas@iet.co.il> 
//******************************************************************************* 
 
// BCGToolbarDropSource.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "BCGToolbarDropSource.h" 
#include "bcgbarres.h" 
#include "bcglocalres.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// CBCGToolbarDropSource 
 
CBCGToolbarDropSource::CBCGToolbarDropSource() 
{ 
	m_bDeleteOnDrop = TRUE; 
	m_bEscapePressed = FALSE; 
	m_bDragStarted = FALSE; 
 
	m_hcurDelete = NULL; 
	m_hcurMove = NULL; 
	m_hcurCopy = NULL; 
} 
 
CBCGToolbarDropSource::~CBCGToolbarDropSource() 
{ 
	::DeleteObject (m_hcurDelete); 
	::DeleteObject (m_hcurMove); 
	::DeleteObject (m_hcurCopy); 
} 
 
 
BEGIN_MESSAGE_MAP(CBCGToolbarDropSource, COleDropSource) 
	//{{AFX_MSG_MAP(CBCGToolbarDropSource) 
		// NOTE - the ClassWizard will add and remove mapping macros here. 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CBCGToolbarDropSource message handlers 
 
SCODE CBCGToolbarDropSource::GiveFeedback(DROPEFFECT dropEffect)  
{ 
	HCURSOR hcur = NULL; 
 
	switch (dropEffect) 
	{ 
	case DROPEFFECT_MOVE: 
		hcur = m_hcurMove; 
		break; 
 
	case DROPEFFECT_COPY: 
		hcur = m_hcurCopy; 
		break; 
 
	default: 
		hcur = m_hcurDelete; 
		break; 
	} 
 
	if (hcur == NULL) 
	{ 
		return COleDropSource::GiveFeedback(dropEffect); 
	} 
 
	::SetCursor (hcur); 
	return S_OK; 
} 
 
SCODE CBCGToolbarDropSource::QueryContinueDrag(BOOL bEscapePressed, DWORD dwKeyState)  
{ 
	if (m_bDeleteOnDrop && m_hcurDelete != NULL) 
	{ 
		::SetCursor (m_hcurDelete); 
	} 
 
	m_bEscapePressed = bEscapePressed; 
	return COleDropSource::QueryContinueDrag(bEscapePressed, dwKeyState); 
} 
 
BOOL CBCGToolbarDropSource::OnBeginDrag(CWnd* pWnd)  
{ 
	if (m_hcurDelete == NULL) 
	{ 
		CBCGLocalResource locaRes; 
		m_hcurDelete = AfxGetApp ()->LoadCursor (IDC_BCGBARRES_DELETE); 
		m_hcurMove = AfxGetApp ()->LoadCursor (IDC_BCGBARRES_MOVE); 
		m_hcurCopy = AfxGetApp ()->LoadCursor (IDC_BCGBARRES_COPY); 
	} 
 
	m_bDragStarted = TRUE; 
	return COleDropSource::OnBeginDrag(pWnd); 
}