BROWSEH.CPP (BROWSEH OLE Sample)
/*************************************************************************
-
- OLE Automation TypeLibrary Browse Helper Sample
-
- browse.cpp
-
- CBrowseHelper implementation
-
- Written by Microsoft Product Support Services, Windows Developer Support
- (c) Copyright Microsoft Corp. 1994 All Rights Reserved
-
- ***********************************************************************/
#include <windows.h>
#include <windowsx.h>
#ifdef WIN16
#include <ole2.h>
#include <compobj.h>
#include <dispatch.h>
#include <variant.h>
#include <olenls.h>
#endif
#include "browseh.h"
/*
* CBrowseHelper::Create
*
* Purpose:
* Creates an instance of the BrowseHelper automation object and initializes
it.
*
* Parameters:
* ppBrowseHelper Returns BrowseHelper automation object.
*
* Return Value:
* HRESULT
*
*/
HRESULT
CBrowseHelper::Create(CBrowseHelper FAR* FAR* ppBrowseHelper )
{
HRESULT hr;
CBrowseHelper FAR* pBrowseHelper = NULL;
*ppBrowseHelper = NULL;
// Create object.
pBrowseHelper = new CBrowseHelper();
if (pBrowseHelper == NULL)
{
hr = ResultFromScode(E_OUTOFMEMORY);
goto error;
}
// Load type information for the application object from type library.
hr = pBrowseHelper->LoadTypeInfo(IID_IBrowseHelper);
if (FAILED(hr))
goto error;
#ifdef _DEBUG
lstrcpyn(pBrowseHelper->m_szClassName, TEXT("BrowseHelper"), 100);
#endif
*ppBrowseHelper = pBrowseHelper;
return NOERROR;
error:
if (pBrowseHelper == NULL)
return ResultFromScode(E_OUTOFMEMORY);
delete pBrowseHelper;
return hr;
}
/*
* CBrowseHelper::CBrowseHelper
*
* Purpose:
* Constructor for CBrowseHelper object. Initializes members to NULL.
*
*/
CBrowseHelper::CBrowseHelper()
{
extern ULONG g_cObj;
g_cObj++;
}
/*
* CBrowseHelper::~CBrowseHelper
*
* Purpose:
* Destructor for CBrowseHelper object. Frees BrowseHelper message BSTR and
default
* IDispatch implementation. Closes the aplication.
*
*/
CBrowseHelper::~CBrowseHelper()
{
extern ULONG g_cObj;
g_cObj--;
}
STDMETHODIMP_(REFCLSID)
CBrowseHelper::GetInterfaceID()
{
return IID_IBrowseHelper;
}
/*
* CBrowseHelper::BrowseTypeLibrary
*
* Purpose:
* Opens and browses type library. Creates and returns a TypeLibrary object.
*
*/
STDMETHODIMP_(ITypeLibrary FAR*)
CBrowseHelper::BrowseTypeLibrary(BSTR bstrPath)
{
LPTYPELIB ptlib = NULL;
LPDISPATCH pdisp;
HRESULT hr;
CTypeLibrary FAR* pTypeLibrary;
hr = LoadTypeLib(bstrPath, &ptlib);
if (FAILED(hr))
{RaiseException(IDS_CannotFindTypeLibrary); return NULL;}
hr = CTypeLibrary::Create(ptlib, &pTypeLibrary);
if (FAILED(hr))
{RaiseException(IDS_TypeLibraryCreationFailed); goto error;}
hr = pTypeLibrary->QueryInterface(IID_IDispatch, (void FAR* FAR*)&pdisp);
if (FAILED(hr))
{RaiseException(IDS_Unexpected); goto error;}
ptlib->Release();
return (ITypeLibrary FAR*)pdisp;
error:
if (ptlib)
ptlib->Release();
return NULL;
}
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