xref: /aoo41x/main/dtrans/source/win32/dnd/idroptarget.hxx (revision fbcf0fe9)

/**************************************************************
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
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#ifndef _IDROPTARGET_HXX_
#define _IDROPTARGET_HXX_

#include "target.hxx"

class IDropTargetImpl: public IDropTarget
{
    LONG m_nRefCount;
    // Calls to IDropTarget functions are delegated to a DropTarget.
    DropTarget& m_rDropTarget;

    virtual ~IDropTargetImpl(); // delete is only called by IUnknown::Release
    IDropTargetImpl( const IDropTargetImpl& );
    IDropTargetImpl& operator=( const IDropTargetImpl& );
public:
    IDropTargetImpl( DropTarget& pTarget);

   	// IDropTarget
	virtual HRESULT STDMETHODCALLTYPE QueryInterface(
            /* [in] */ REFIID riid,
            /* [iid_is][out] */ void __RPC_FAR *__RPC_FAR *ppvObject);

    virtual ULONG STDMETHODCALLTYPE AddRef( );

    virtual ULONG STDMETHODCALLTYPE Release( );

	virtual HRESULT STDMETHODCALLTYPE DragEnter(
            /* [unique][in] */ IDataObject __RPC_FAR *pDataObj,
            /* [in] */ DWORD grfKeyState,
            /* [in] */ POINTL pt,
            /* [out][in] */ DWORD __RPC_FAR *pdwEffect);

	virtual HRESULT STDMETHODCALLTYPE DragOver(
            /* [in] */ DWORD grfKeyState,
            /* [in] */ POINTL pt,
            /* [out][in] */ DWORD __RPC_FAR *pdwEffect);

	virtual HRESULT STDMETHODCALLTYPE DragLeave( ) ;

    virtual HRESULT STDMETHODCALLTYPE Drop(
            /* [unique][in] */ IDataObject __RPC_FAR *pDataObj,
            /* [in] */ DWORD grfKeyState,
            /* [in] */ POINTL pt,
            /* [out][in] */ DWORD __RPC_FAR *pdwEffect);


};
#endif