125 lines
3.3 KiB
C++
125 lines
3.3 KiB
C++
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//+-------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1994
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//
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// File: exports.cxx
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//
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// Contents: Code to export filter and word breaker class factories
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//
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// History: 15-Aug-1994 SitaramR Created
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//
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// Notes: Copied from txtifilt.hxx and then modified
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//
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//--------------------------------------------------------------------------
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#include <pch.cxx>
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#pragma hdrstop
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#include <nullfilt.hxx>
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#include <txtifilt.hxx>
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#include <defbreak.hxx>
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#include <classf.hxx>
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#include <cicontrl.hxx>
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#include "classid.hxx"
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long gulcInstances = 0;
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//+-------------------------------------------------------------------------
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//
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// Function: DllGetClassObject
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//
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// Synopsis: Ole DLL load class routine
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//
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// Arguments: [cid] -- Class to load
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// [iid] -- Interface to bind to on class object
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// [ppvObj] -- Interface pointer returned here
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//
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// Returns: Text filter or a word breaker class factory
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//
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// History: 23-Feb-1994 KyleP Created
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//
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//--------------------------------------------------------------------------
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extern "C" SCODE STDMETHODCALLTYPE DllGetClassObject( REFCLSID cid,
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REFIID iid,
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void ** ppvObj )
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{
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IUnknown * pResult;
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SCODE sc = S_OK;
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TRY
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{
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if ( CLSID_CTextIFilter == cid || CLSID_CTextClass == cid ) {
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pResult = (IUnknown *)new CTextIFilterCF;
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} else if ( CLSID_CNullIFilter == cid ) {
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pResult = (IUnknown *)new CNullIFilterCF;
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} else if ( CLSID_Neutral_WBreaker == cid ) {
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pResult = (IUnknown *)new CDefWordBreakerCF;
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} else if ( guidStorageFilterObject == cid) {
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pResult = (IUnknown *) new CStorageFilterObjectCF;
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} else if ( guidStorageDocStoreLocatorObject == cid) {
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pResult = (IUnknown *) new CStorageDocStoreLocatorObjectCF;
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} else if ( clsidCiControl == cid) {
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pResult = (IUnknown *) new CCiControlObjectCF;
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} else {
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ciDebugOut(( DEB_ITRACE, "DllGetClassObject: no such interface found\n" ));
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pResult = 0;
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sc = E_NOINTERFACE;
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}
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}
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CATCH(CException, e)
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{
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switch( e.GetErrorCode() )
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{
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case E_OUTOFMEMORY:
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sc = (E_OUTOFMEMORY);
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break;
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default:
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sc = (E_UNEXPECTED);
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}
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}
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END_CATCH;
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if (0 != pResult) {
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sc = pResult->QueryInterface( iid, ppvObj );
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pResult->Release( );
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}
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return (sc);
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}
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//+-------------------------------------------------------------------------
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//
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// Method: DllCanUnloadNow
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//
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// Synopsis: Notifies DLL to unload (cleanup global resources)
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//
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// Returns: S_OK if it is acceptable for caller to unload DLL.
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//
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// History: 23-Feb-1994 KyleP Created
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//
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//--------------------------------------------------------------------------
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extern "C" SCODE STDMETHODCALLTYPE DllCanUnloadNow( void )
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{
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if ( gulcInstances <= 0 )
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return( S_OK );
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else
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return( S_FALSE );
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}
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