112 lines
3.1 KiB
C++
112 lines
3.1 KiB
C++
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//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1997 - 1999
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//
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// File: N C N E T C F G . C P P
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//
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// Contents: Common routines for dealing with INetCfg interfaces.
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//
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// Notes:
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//
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// Author: shaunco 24 Mar 1997
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//
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//----------------------------------------------------------------------------
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#include <stdafx.h>
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#pragma hdrstop
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#include "netcfgx.h"
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#include "assert.h"
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//nclude "netcfgn.h"
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//nclude "ncdebug.h"
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//nclude "ncbase.h"
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//nclude "ncmisc.h"
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#include "ncnetcfg.h"
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//nclude "ncreg.h"
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//nclude "ncvalid.h"
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//+---------------------------------------------------------------------------
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//
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// Function: HrFindComponents
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//
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// Purpose: Find multiple INetCfgComponents with one call. This makes
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// the error handling associated with multiple calls to
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// QueryNetCfgClass and Find much easier.
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//
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// Arguments:
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// pnc [in] pointer to INetCfg object
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// cComponents [in] count of class guid pointers, component id
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// pointers, and INetCfgComponent output pointers.
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// apguidClass [in] array of class guid pointers.
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// apszwComponentId [in] array of component id pointers.
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// apncc [out] array of returned INetCfgComponet pointers.
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//
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// Returns: S_OK or an error code.
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//
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// Author: shaunco 22 Mar 1997
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//
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// Notes: cComponents is the count of pointers in all three arrays.
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// S_OK will still be returned even if no components were
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// found! This is by design.
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//
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HRESULT
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HrFindComponents (
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INetCfg* pnc,
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ULONG cComponents,
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const GUID** apguidClass,
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const LPCWSTR* apszwComponentId,
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INetCfgComponent** apncc)
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{
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Assert (pnc);
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Assert (cComponents);
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Assert (apguidClass);
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Assert (apszwComponentId);
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Assert (apncc);
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// Initialize the output parameters.
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//
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ZeroMemory (apncc, cComponents * sizeof(*apncc));
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// Find all of the components requested.
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// Variable initialization is important here.
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HRESULT hr = S_OK;
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ULONG i;
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for (i = 0; (i < cComponents) && SUCCEEDED(hr); i++)
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{
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// Get the class object for this component.
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INetCfgClass* pncclass = NULL;
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hr = pnc->QueryNetCfgClass (apguidClass[i], IID_INetCfgClass,
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reinterpret_cast<void**>(&pncclass));
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if (SUCCEEDED(hr) && pncclass)
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{
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// Find the component.
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hr = pncclass->FindComponent (apszwComponentId[i], &apncc[i]);
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AssertSz (SUCCEEDED(hr), "pncclass->Find failed.");
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ReleaseObj (pncclass);
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pncclass = NULL;
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}
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}
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// On any error, release what we found and set the output to NULL.
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if (FAILED(hr))
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{
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for (i = 0; i < cComponents; i++)
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{
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ReleaseObj (apncc[i]);
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apncc[i] = NULL;
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}
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}
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// Otherwise, normalize the HRESULT. (i.e. don't return S_FALSE)
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else
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{
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hr = S_OK;
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}
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TraceResult ("HrFindComponents", hr);
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return hr;
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}
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