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196 lines
5.6 KiB
196 lines
5.6 KiB
/*--------------------------------------------------------------------------*
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*
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* Microsoft Windows
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* Copyright (C) Microsoft Corporation, 1992 - 1999
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*
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* File: rsltitem.h
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*
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* Contents: Interface file for CResultItem
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*
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* History: 13-Dec-1999 jeffro Created
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*
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*--------------------------------------------------------------------------*/
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#pragma once
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#ifndef RSLTITEM_H_INCLUDED
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#define RSLTITEM_H_INCLUDED
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/*+-------------------------------------------------------------------------*
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* CResultItem
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*
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* This is the class behind the HRESULTITEM. A pointer to this class is
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* stored as the item data for each item in a non-virtual list.
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*--------------------------------------------------------------------------*/
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class CResultItem
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{
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public:
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CResultItem (COMPONENTID id, LPARAM lSnapinData, int nImage);
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bool IsScopeItem () const;
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COMPONENTID GetOwnerID () const;
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LPARAM GetSnapinData () const;
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int GetImageIndex () const;
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HNODE GetScopeNode () const;
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void SetSnapinData (LPARAM lSnapinData);
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void SetImageIndex (int nImage);
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static HRESULTITEM ToHandle (const CResultItem* pri);
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static CResultItem* FromHandle (HRESULTITEM hri);
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private:
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const COMPONENTID m_id;
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int m_nImage;
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union
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{
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HNODE m_hNode; // if IsScopeItem() == true
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LPARAM m_lSnapinData; // if IsScopeItem() == false
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};
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#ifdef DBG
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enum { Signature = 0x746c7372 /* "rslt" */ };
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const DWORD m_dwSignature;
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#endif
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};
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/*+-------------------------------------------------------------------------*
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* CResultItem::CResultItem
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*
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* Constructs a CResultItem.
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*--------------------------------------------------------------------------*/
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inline CResultItem::CResultItem (
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COMPONENTID id,
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LPARAM lSnapinData,
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int nImage) :
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#ifdef DBG
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m_dwSignature (Signature),
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#endif
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m_id (id),
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m_lSnapinData (lSnapinData),
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m_nImage (nImage)
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{}
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/*+-------------------------------------------------------------------------*
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* CResultItem::IsScopeItem
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*
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* Returns true if this CResultItem represents a scope item, false otherwise.
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*--------------------------------------------------------------------------*/
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inline bool CResultItem::IsScopeItem () const
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{
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return (m_id == TVOWNED_MAGICWORD);
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}
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/*+-------------------------------------------------------------------------*
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* CResultItem::GetOwnerID
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*
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* Returns the COMPONENTID for the componenet that owns this CResultItem.
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*--------------------------------------------------------------------------*/
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inline COMPONENTID CResultItem::GetOwnerID () const
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{
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return (m_id);
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}
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/*+-------------------------------------------------------------------------*
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* CResultItem::GetSnapinData
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*
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* Returns the snap-in's LPARAM for this CResultItem.
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*--------------------------------------------------------------------------*/
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inline LPARAM CResultItem::GetSnapinData () const
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{
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return (m_lSnapinData);
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}
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/*+-------------------------------------------------------------------------*
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* CResultItem::GetScopeNode
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*
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* Returns the HNODE for a CResultItem that represents a scope node. If the
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* CResultItem does not represent a scope node, NULL is returned.
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*--------------------------------------------------------------------------*/
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inline HNODE CResultItem::GetScopeNode () const
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{
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return (IsScopeItem() ? m_hNode : NULL);
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}
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/*+-------------------------------------------------------------------------*
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* CResultItem::GetImageIndex
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*
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* Returns the image index for a CResultItem.
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*--------------------------------------------------------------------------*/
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inline int CResultItem::GetImageIndex () const
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{
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return (m_nImage);
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}
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/*+-------------------------------------------------------------------------*
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* CResultItem::SetSnapinData
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*
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* Sets the snap-in's LPARAM for the CResultItem.
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*--------------------------------------------------------------------------*/
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inline void CResultItem::SetSnapinData (LPARAM lSnapinData)
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{
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m_lSnapinData = lSnapinData;
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}
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/*+-------------------------------------------------------------------------*
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* CResultItem::SetImageIndex
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*
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* Sets the image index for a CResultItem.
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*--------------------------------------------------------------------------*/
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inline void CResultItem::SetImageIndex (int nImage)
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{
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m_nImage = nImage;
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}
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/*+-------------------------------------------------------------------------*
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* CResultItem::ToHandle
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*
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* Converts a CResultItem to a HRESULTITEM.
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*--------------------------------------------------------------------------*/
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inline HRESULTITEM CResultItem::ToHandle (const CResultItem* pri)
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{
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return (reinterpret_cast<HRESULTITEM>(const_cast<CResultItem*>(pri)));
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}
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/*+-------------------------------------------------------------------------*
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* CResultItem::FromHandle
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*
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* Converts a HRESULTITEM to a CResultItem*. This function cannot use
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* dynamic_cast because there are no virtual functions and therefore no
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* place to store RTTI.
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*--------------------------------------------------------------------------*/
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inline CResultItem* CResultItem::FromHandle (HRESULTITEM hri)
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{
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if ((hri == NULL) || IS_SPECIAL_LVDATA (hri))
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return (NULL);
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CResultItem* pri = reinterpret_cast<CResultItem*>(hri);
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ASSERT (pri->m_dwSignature == Signature);
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return (pri);
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}
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#endif /* RSLTITEM_H_INCLUDED */
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