209 lines
4.8 KiB
C++
209 lines
4.8 KiB
C++
/**********************************************************************/
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/** Microsoft Windows/NT **/
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/** Copyright(c) Microsoft Corporation, 1997 - 1997 **/
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/**********************************************************************/
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/*
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about.cpp
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base class for the IAbout interface for MMC
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FILE HISTORY:
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*/
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#include <stdafx.h>
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#ifdef _DEBUG
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#define new DEBUG_NEW
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#undef THIS_FILE
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static char THIS_FILE[] = __FILE__;
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#endif
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DEBUG_DECLARE_INSTANCE_COUNTER(CAbout);
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CAbout::CAbout() :
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m_hSmallImage(NULL),
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m_hSmallImageOpen(NULL),
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m_hLargeImage(NULL),
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m_hAppIcon(NULL)
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{
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DEBUG_INCREMENT_INSTANCE_COUNTER(CAbout);
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}
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CAbout::~CAbout()
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{
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DEBUG_DECREMENT_INSTANCE_COUNTER(CAbout);
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if (m_hSmallImage)
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{
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DeleteObject(m_hSmallImage);
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}
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if (m_hSmallImageOpen)
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{
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DeleteObject(m_hSmallImageOpen);
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}
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if (m_hLargeImage)
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{
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DeleteObject(m_hLargeImage);
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}
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if (m_hAppIcon)
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{
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DeleteObject(m_hAppIcon);
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}
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}
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/*!--------------------------------------------------------------------------
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CAbout::AboutHelper
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Helper to get information from resource file
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Author:
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---------------------------------------------------------------------------*/
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HRESULT
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CAbout::AboutHelper
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(
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UINT nID,
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LPOLESTR* lpPtr
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)
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{
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if (lpPtr == NULL)
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return E_POINTER;
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CString s;
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// Needed for Loadstring
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AFX_MANAGE_STATE(AfxGetStaticModuleState());
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HRESULT hr = hrOK;
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COM_PROTECT_TRY
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{
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s.LoadString(nID);
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*lpPtr = reinterpret_cast<LPOLESTR>
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(CoTaskMemAlloc((s.GetLength() + 1)* sizeof(wchar_t)));
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if (*lpPtr == NULL)
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return E_OUTOFMEMORY;
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lstrcpy(*lpPtr, (LPCTSTR)s);
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}
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COM_PROTECT_CATCH
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return hr;
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}
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/*!--------------------------------------------------------------------------
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CAbout::GetSnapinDescription
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MMC calls this to get the snapin's description
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Author:
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---------------------------------------------------------------------------*/
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STDMETHODIMP
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CAbout::GetSnapinDescription
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(
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LPOLESTR* lpDescription
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)
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{
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return AboutHelper(GetAboutDescriptionId(), lpDescription);
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}
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/*!--------------------------------------------------------------------------
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CAbout::GetProvider
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MMC calls this to get the snapin's provider
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Author:
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---------------------------------------------------------------------------*/
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STDMETHODIMP
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CAbout::GetProvider
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(
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LPOLESTR* lpName
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)
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{
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return AboutHelper(GetAboutProviderId(), lpName);
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}
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/*!--------------------------------------------------------------------------
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CAbout::AboutHelper
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MMC calls this to get the snapin's version
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Author:
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---------------------------------------------------------------------------*/
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STDMETHODIMP
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CAbout::GetSnapinVersion
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(
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LPOLESTR* lpVersion
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)
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{
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return AboutHelper(GetAboutVersionId(), lpVersion);
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}
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/*!--------------------------------------------------------------------------
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CAbout::GetSnapinImage
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MMC calls this to get the snapin's icon
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Author:
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---------------------------------------------------------------------------*/
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STDMETHODIMP
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CAbout::GetSnapinImage
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(
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HICON* hAppIcon
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)
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{
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if (hAppIcon == NULL)
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return E_POINTER;
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AFX_MANAGE_STATE(AfxGetStaticModuleState());
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if (NULL == m_hAppIcon)
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{
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m_hAppIcon = LoadIcon(AfxGetInstanceHandle(), MAKEINTRESOURCE(GetAboutIconId()));
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}
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*hAppIcon = m_hAppIcon;
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ASSERT(*hAppIcon != NULL);
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return (*hAppIcon != NULL) ? S_OK : E_FAIL;
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}
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/*!--------------------------------------------------------------------------
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CAbout::GetStaticFolderImage
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MMC calls this to get the bitmap for the snapin's root node
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Author:
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---------------------------------------------------------------------------*/
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STDMETHODIMP
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CAbout::GetStaticFolderImage
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(
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HBITMAP* hSmallImage,
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HBITMAP* hSmallImageOpen,
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HBITMAP* hLargeImage,
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COLORREF* cLargeMask
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)
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{
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if (NULL == hSmallImage || NULL == hSmallImageOpen || NULL == hLargeImage)
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{
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return E_POINTER;
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}
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AFX_MANAGE_STATE(AfxGetStaticModuleState());
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if (NULL == m_hSmallImage)
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{
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m_hSmallImage = LoadBitmap(AfxGetInstanceHandle(), MAKEINTRESOURCE(GetSmallRootId()));
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}
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*hSmallImage = m_hSmallImage;
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if (NULL == m_hSmallImageOpen)
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{
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m_hSmallImageOpen = LoadBitmap(AfxGetInstanceHandle(), MAKEINTRESOURCE(GetSmallOpenRootId()));
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}
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*hSmallImageOpen = m_hSmallImageOpen;
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if (NULL == m_hLargeImage)
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{
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m_hLargeImage = LoadBitmap(AfxGetInstanceHandle(), MAKEINTRESOURCE(GetLargeRootId()));
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}
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*hLargeImage = m_hLargeImage;
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*cLargeMask = GetLargeColorMask();
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return S_OK;
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}
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