95 lines
2.2 KiB
C++
95 lines
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "nsNativeDragSource.h"
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#include <stdio.h>
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/*
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* class nsNativeDragSource
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*/
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nsNativeDragSource::nsNativeDragSource()
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{
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m_cRef = 0;
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}
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nsNativeDragSource::~nsNativeDragSource()
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{
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}
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// IUnknown methods - see iunknown.h for documentation
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STDMETHODIMP nsNativeDragSource::QueryInterface(REFIID riid, void** ppv)
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{
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*ppv=NULL;
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if (IID_IUnknown==riid || IID_IDropSource==riid)
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*ppv=this;
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if (NULL!=*ppv) {
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((LPUNKNOWN)*ppv)->AddRef();
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return NOERROR;
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}
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return ResultFromScode(E_NOINTERFACE);
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}
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STDMETHODIMP_(ULONG) nsNativeDragSource::AddRef(void)
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{
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return ++m_cRef;
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}
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STDMETHODIMP_(ULONG) nsNativeDragSource::Release(void)
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{
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if (0 != --m_cRef)
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return m_cRef;
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delete this;
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return 0;
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}
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// IDataSource methods - see idropsrc.h for documentation
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STDMETHODIMP nsNativeDragSource::QueryContinueDrag(BOOL fEsc, DWORD grfKeyState)
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{
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//printf("QueryContinueDrag\n");
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if (fEsc) {
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//printf("QueryContinueDrag: fEsc\n");
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return ResultFromScode(DRAGDROP_S_CANCEL);
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}
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if (!(grfKeyState & MK_LBUTTON)) {
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//printf("QueryContinueDrag: grfKeyState & MK_LBUTTON\n");
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return ResultFromScode(DRAGDROP_S_DROP);
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}
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//printf("QueryContinueDrag: NOERROR\n");
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return NOERROR;
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}
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STDMETHODIMP nsNativeDragSource::GiveFeedback(DWORD dwEffect)
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{
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//printf("GiveFeedback\n");
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return ResultFromScode(DRAGDROP_S_USEDEFAULTCURSORS);
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}
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