snapinabout.cpp

ftpserver very good sample

#include "StdAfx.h"
#include "WarMmcSnapin.h"
#include "SnapinAbout.h"   // class implemented


/////////////////////////////// PUBLIC ///////////////////////////////////////

//============================= LIFECYCLE ====================================

CSnapinAbout::CSnapinAbout()
: m_cref(0)
{
    OBJECT_CREATED
        
        m_hSmallImage = (HBITMAP)LoadImage(g_hinst, MAKEINTRESOURCE(IDB_SMBMP), IMAGE_BITMAP, 16, 16, LR_LOADTRANSPARENT);
    m_hLargeImage = (HBITMAP)LoadImage(g_hinst, MAKEINTRESOURCE(IDB_LGBMP), IMAGE_BITMAP, 32, 32, LR_LOADTRANSPARENT);
    
    m_hSmallImageOpen = (HBITMAP)LoadImage(g_hinst, MAKEINTRESOURCE(IDB_SMOPEN), IMAGE_BITMAP, 16, 16, LR_LOADTRANSPARENT);
    
    m_hAppIcon = LoadIcon(g_hinst, MAKEINTRESOURCE(IDI_WARSVR));
}

CSnapinAbout::~CSnapinAbout()
{
    if (m_hSmallImage != NULL)
        FreeResource(m_hSmallImage);
    
    if (m_hLargeImage != NULL)
        FreeResource(m_hLargeImage);
    
    if (m_hSmallImageOpen != NULL)
        FreeResource(m_hSmallImageOpen);
    
    if (m_hAppIcon != NULL)
        FreeResource(m_hAppIcon);
    
    m_hSmallImage = NULL;
    m_hLargeImage = NULL;
    m_hSmallImageOpen = NULL;
    m_hAppIcon = NULL;
    
    OBJECT_DESTROYED
}

//============================= OPERATORS ====================================
//============================= OPERATIONS ===================================

STDMETHODIMP CSnapinAbout::QueryInterface(REFIID riid, LPVOID *ppv)
{
    if (!ppv)
        return E_FAIL;
    
    *ppv = NULL;
    
    if (IsEqualIID(riid, IID_IUnknown))
        *ppv = static_cast<ISnapinAbout *>(this);
    else if (IsEqualIID(riid, IID_ISnapinAbout))
        *ppv = static_cast<ISnapinAbout *>(this);
    
    if (*ppv)
    {
        reinterpret_cast<IUnknown *>(*ppv)->AddRef();
        return S_OK;
    }
    
    return E_NOINTERFACE;
}

STDMETHODIMP_(ULONG) CSnapinAbout::AddRef()
{
    return InterlockedIncrement((LONG *)&m_cref);
}

STDMETHODIMP_(ULONG) CSnapinAbout::Release()
{
    if (InterlockedDecrement((LONG *)&m_cref) == 0)
    {
        // we need to decrement our object count in the DLL
        delete this;
        return 0;
    }
    return m_cref;
    
}

///////////////////////////////
// Interface ISnapinAbout
///////////////////////////////
STDMETHODIMP CSnapinAbout::GetSnapinDescription(/* [out] */ LPOLESTR *lpDescription)
{
    _TCHAR szDesc[MAX_PATH];
    
    LoadString(g_hinst, IDS_SNAPINDESC, szDesc, sizeof(szDesc));
    
    return AllocOleStr(lpDescription, szDesc);
}


STDMETHODIMP CSnapinAbout::GetProvider(/* [out] */ LPOLESTR *lpName)
{
    return AllocOleStr(lpName, _T("Copyright