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2 years ago
// XTPDropSource.cpp : implementation file
//
// This file is a part of the XTREME CONTROLS MFC class library.
// (c)1998-2012 Codejock Software, All Rights Reserved.
//
// THIS SOURCE FILE IS THE PROPERTY OF CODEJOCK SOFTWARE AND IS NOT TO BE
// RE-DISTRIBUTED BY ANY MEANS WHATSOEVER WITHOUT THE EXPRESSED WRITTEN
// CONSENT OF CODEJOCK SOFTWARE.
//
// THIS SOURCE CODE CAN ONLY BE USED UNDER THE TERMS AND CONDITIONS OUTLINED
// IN THE XTREME TOOLKIT PRO LICENSE AGREEMENT. CODEJOCK SOFTWARE GRANTS TO
// YOU (ONE SOFTWARE DEVELOPER) THE LIMITED RIGHT TO USE THIS SOFTWARE ON A
// SINGLE COMPUTER.
//
// CONTACT INFORMATION:
// support@codejock.com
// http://www.codejock.com
//
/////////////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "XTPDropSource.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CXTPDropSource
CXTPDropSource::CXTPDropSource()
{
m_uiRefCount = 1;
}
CXTPDropSource::~CXTPDropSource()
{
}
/////////////////////////////////////////////////////////////////////////////
// IUnknown Methods
STDMETHODIMP CXTPDropSource::QueryInterface(REFIID riid, LPVOID* ppReturn)
{
*ppReturn = NULL;
//IUnknown
if (IsEqualIID(riid, IID_IUnknown))
{
*ppReturn = this;
}
//IDropTarget
else if (IsEqualIID(riid, IID_IDropSource))
{
*ppReturn = (IDropSource*)this;
}
if (*ppReturn)
{
(*(LPUNKNOWN*)ppReturn)->AddRef();
return S_OK;
}
return E_NOINTERFACE;
}
STDMETHODIMP_(ULONG) CXTPDropSource::AddRef()
{
return ++m_uiRefCount;
}
STDMETHODIMP_(ULONG) CXTPDropSource::Release()
{
if (--m_uiRefCount == 0)
{
delete this;
return 0;
}
return m_uiRefCount;
}
/////////////////////////////////////////////////////////////////////////////
// IDropSource Methods
STDMETHODIMP CXTPDropSource::QueryContinueDrag(BOOL bEsc, DWORD dwKeyState)
{
if (bEsc)
{
return DRAGDROP_S_CANCEL;
}
if ((dwKeyState & MK_LBUTTON) == 0x0000)
{
return DRAGDROP_S_DROP;
}
return S_OK;
}
STDMETHODIMP CXTPDropSource::GiveFeedback(DWORD)
{
return DRAGDROP_S_USEDEFAULTCURSORS;
}