www.pudn.com > editpad_src > bcgtoolbardroptarget.cpp, change:1999-11-18,size:3020b

//******************************************************************************* 
// 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> 
//******************************************************************************* 
 
// BCGToolbarDropTarget.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "BCGToolbarButton.h" 
#include "BCGToolbarDropTarget.h" 
#include "BCGToolbar.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// CBCGToolbarDropTarget 
 
CBCGToolbarDropTarget::CBCGToolbarDropTarget() 
{ 
	m_pOwner = NULL; 
} 
 
CBCGToolbarDropTarget::~CBCGToolbarDropTarget() 
{ 
} 
 
 
BEGIN_MESSAGE_MAP(CBCGToolbarDropTarget, COleDropTarget) 
	//{{AFX_MSG_MAP(CBCGToolbarDropTarget) 
		// NOTE - the ClassWizard will add and remove mapping macros here. 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
BOOL CBCGToolbarDropTarget::Register (CBCGToolBar* pOwner) 
{ 
	m_pOwner = pOwner; 
	return COleDropTarget::Register (pOwner); 
} 
 
///////////////////////////////////////////////////////////////////////////// 
// CBCGToolbarDropTarget message handlers 
 
DROPEFFECT CBCGToolbarDropTarget::OnDragEnter(CWnd* /*pWnd*/, COleDataObject* pDataObject, DWORD dwKeyState, CPoint point)  
{ 
	ASSERT (m_pOwner != NULL); 
 
	if (!m_pOwner->IsCustomizeMode () || 
		!pDataObject->IsDataAvailable (CBCGToolbarButton::m_cFormat)) 
	{ 
		return DROPEFFECT_NONE; 
	} 
 
	return m_pOwner -> OnDragEnter(pDataObject, dwKeyState, point); 
} 
 
void CBCGToolbarDropTarget::OnDragLeave(CWnd* /*pWnd*/)  
{ 
	ASSERT (m_pOwner != NULL); 
	m_pOwner->OnDragLeave (); 
} 
 
DROPEFFECT CBCGToolbarDropTarget::OnDragOver(CWnd* /*pWnd*/, COleDataObject* pDataObject, DWORD dwKeyState, CPoint point)  
{ 
	ASSERT (m_pOwner != NULL); 
 
	if (!m_pOwner->IsCustomizeMode () || 
		!pDataObject->IsDataAvailable (CBCGToolbarButton::m_cFormat)) 
	{ 
		return DROPEFFECT_NONE; 
	} 
 
	return m_pOwner -> OnDragOver(pDataObject, dwKeyState, point); 
} 
 
DROPEFFECT CBCGToolbarDropTarget::OnDropEx(CWnd* /*pWnd*/,  
							COleDataObject* pDataObject,  
							DROPEFFECT dropEffect,  
							DROPEFFECT /*dropList*/, CPoint point)  
{ 
	ASSERT (m_pOwner != NULL); 
 
	if (!m_pOwner->IsCustomizeMode () || 
		!pDataObject->IsDataAvailable (CBCGToolbarButton::m_cFormat)) 
	{ 
		return DROPEFFECT_NONE; 
	} 
 
	return m_pOwner -> OnDrop(pDataObject, dropEffect, point) ? 
			dropEffect : DROPEFFECT_NONE; 
}