224 lines
3.7 KiB
C++
224 lines
3.7 KiB
C++
/*++
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Copyright (C) 1997-1999 Microsoft Corporation
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Module Name:
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about.cpp
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Abstract:
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This module implemets ISnapinAbout inteface(CDevMgrAbout class).
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Author:
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William Hsieh (williamh) created
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Revision History:
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--*/
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#include "devmgr.h"
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#include "about.h"
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//
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// IUnknown interface
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//
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ULONG
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CDevMgrAbout::AddRef()
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{
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::InterlockedIncrement((LONG*)&m_Ref);
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return m_Ref;
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}
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ULONG
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CDevMgrAbout::Release()
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{
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::InterlockedDecrement((LONG*)&m_Ref);
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if (!m_Ref)
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{
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delete this;
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return 0;
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}
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return m_Ref;
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}
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STDMETHODIMP
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CDevMgrAbout::QueryInterface(
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REFIID riid,
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void** ppv
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)
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{
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if (!ppv)
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{
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return E_INVALIDARG;
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}
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HRESULT hr = S_OK;
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if (IsEqualIID(riid, IID_IUnknown))
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{
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*ppv = (IUnknown*)this;
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}
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else if (IsEqualIID(riid, IID_ISnapinAbout))
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{
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*ppv = (ISnapinAbout*)this;
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}
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else
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{
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*ppv = NULL;
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hr = E_NOINTERFACE;
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}
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if (SUCCEEDED(hr))
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{
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AddRef();
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}
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return hr;
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}
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// ISnapinAbout interface
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STDMETHODIMP
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CDevMgrAbout::GetSnapinDescription(
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LPOLESTR *ppDescription
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)
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{
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return LoadResourceOleString(IDS_PROGRAM_ABOUT, ppDescription);
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}
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STDMETHODIMP
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CDevMgrAbout::GetProvider(
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LPOLESTR *ppProvider
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)
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{
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return LoadResourceOleString(IDS_PROGRAM_PROVIDER, ppProvider);
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}
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STDMETHODIMP
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CDevMgrAbout::GetSnapinVersion(
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LPOLESTR *ppVersion
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)
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{
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return LoadResourceOleString(IDS_PROGRAM_VERSION, ppVersion);
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}
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STDMETHODIMP
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CDevMgrAbout::GetSnapinImage(
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HICON* phIcon
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)
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{
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if (!phIcon)
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{
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return E_INVALIDARG;
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}
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*phIcon = ::LoadIcon(g_hInstance, MAKEINTRESOURCE(IDI_DEVMGR));
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if (!*phIcon)
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{
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return E_OUTOFMEMORY;
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}
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return S_OK;
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}
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STDMETHODIMP
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CDevMgrAbout::GetStaticFolderImage(
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HBITMAP* phSmall,
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HBITMAP* phSmallOpen,
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HBITMAP* phLarge,
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COLORREF* pcrMask
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)
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{
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if (!phSmall || !phSmallOpen || !phLarge || !pcrMask)
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{
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return E_INVALIDARG;
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}
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*phSmall = ::LoadBitmap(g_hInstance, MAKEINTRESOURCE(IDB_SYSDM16));
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*phSmallOpen = ::LoadBitmap(g_hInstance, MAKEINTRESOURCE(IDB_SYSDM16));
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*phLarge =::LoadBitmap(g_hInstance, MAKEINTRESOURCE(IDB_SYSDM32));
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*pcrMask = RGB(255, 0, 255);
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if (NULL == *phSmall || NULL == *phSmallOpen || NULL == *phLarge)
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{
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if (NULL != *phSmall)
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{
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::DeleteObject(*phSmall);
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*phSmall = NULL;
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}
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if (NULL != *phSmallOpen)
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{
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::DeleteObject(*phSmallOpen);
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*phSmallOpen = NULL;
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}
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if (NULL != *phLarge)
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{
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::DeleteObject(*phLarge);
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*phLarge = NULL;
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}
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return E_OUTOFMEMORY;
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}
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return S_OK;
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}
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/////////////////////////////////////////////////////////////////////////////
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// private routine to allocate ole task memory and load the given resource
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// string(indicated by its string id) to the allocated memory.
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// INPUT:
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// StringId -- the string resource id
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// LPOLESTR* -- place holder to hold the ole string pointer
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// OUTPUT:
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// standard OLE HRESULT
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HRESULT
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CDevMgrAbout::LoadResourceOleString(
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int StringId,
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LPOLESTR* ppolestr
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)
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{
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if (!ppolestr)
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{
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return E_INVALIDARG;
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}
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TCHAR Text[MAX_PATH];
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// get the string
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::LoadString(g_hInstance, StringId, Text, ARRAYLEN(Text));
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try
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{
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*ppolestr = AllocOleTaskString(Text);
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}
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catch (CMemoryException* e)
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{
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e->Delete();
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if (*ppolestr)
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{
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FreeOleTaskString(*ppolestr);
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*ppolestr = NULL;
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}
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}
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if (!*ppolestr)
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{
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return E_OUTOFMEMORY;
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}
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return S_OK;
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}
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