93 lines
3.2 KiB
C++
93 lines
3.2 KiB
C++
/******************************************************************************
|
|
|
|
Copyright (c) 2000 Microsoft Corporation
|
|
|
|
Module Name:
|
|
lib.cpp
|
|
|
|
Abstract:
|
|
This file contains the implementation of the HCApi Library.
|
|
|
|
Revision History:
|
|
Davide Massarenti (Dmassare) 04/15/2000
|
|
created
|
|
|
|
******************************************************************************/
|
|
|
|
#include "StdAfx.h"
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
static const WCHAR c_HelpCtr[] = HC_ROOT_HELPSVC_BINARIES L"\\HelpCtr.exe";
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
HRESULT HCAPI::OpenConnection( /*[out]*/ CComPtr<IPCHHelpHost>& ipc )
|
|
{
|
|
__HCP_FUNC_ENTRY( "HCAPI::OpenConnection" );
|
|
|
|
HRESULT hr;
|
|
PROCESS_INFORMATION piProcessInformation;
|
|
STARTUPINFOW siStartupInfo;
|
|
CLSID clsidCaller;
|
|
|
|
|
|
::ZeroMemory( (PVOID)&piProcessInformation, sizeof( piProcessInformation ) );
|
|
::ZeroMemory( (PVOID)&siStartupInfo , sizeof( siStartupInfo ) ); siStartupInfo.cb = sizeof( siStartupInfo );
|
|
|
|
|
|
__MPC_EXIT_IF_METHOD_FAILS(hr, ::CoCreateGuid( &clsidCaller ));
|
|
|
|
|
|
//
|
|
// Create the process, passing the clsid to locate the IPCHHelpHost object. Try contacting the process for 10 seconds, then quit.
|
|
//
|
|
{
|
|
CComBSTR bstrCaller( clsidCaller );
|
|
MPC::wstring strExe ( c_HelpCtr ); MPC::SubstituteEnvVariables( strExe );
|
|
int iRetries = 100;
|
|
|
|
strExe += L" -Controlled ";
|
|
strExe += SAFEBSTR( bstrCaller );
|
|
|
|
__MPC_EXIT_IF_CALL_RETURNS_FALSE(hr, ::CreateProcessW( NULL ,
|
|
(LPWSTR)strExe.c_str() ,
|
|
NULL ,
|
|
NULL ,
|
|
FALSE ,
|
|
NORMAL_PRIORITY_CLASS,
|
|
NULL ,
|
|
NULL ,
|
|
&siStartupInfo ,
|
|
&piProcessInformation ));
|
|
|
|
while(iRetries--)
|
|
{
|
|
CComPtr<IRunningObjectTable> rt;
|
|
CComPtr<IMoniker> moniker;
|
|
CComPtr<IUnknown> obj;
|
|
|
|
::Sleep( 100 );
|
|
|
|
__MPC_EXIT_IF_METHOD_FAILS(hr, ::GetRunningObjectTable( 0, &rt ));
|
|
__MPC_EXIT_IF_METHOD_FAILS(hr, ::CreateClassMoniker ( clsidCaller, &moniker ));
|
|
|
|
if(SUCCEEDED(rt->GetObject( moniker, &obj )) && obj)
|
|
{
|
|
__MPC_SET_ERROR_AND_EXIT(hr, obj.QueryInterface( &ipc ));
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
hr = REGDB_E_CLASSNOTREG;
|
|
|
|
|
|
__HCP_FUNC_CLEANUP;
|
|
|
|
if(piProcessInformation.hProcess) ::CloseHandle( piProcessInformation.hProcess );
|
|
if(piProcessInformation.hThread ) ::CloseHandle( piProcessInformation.hThread );
|
|
|
|
__HCP_FUNC_EXIT(hr);
|
|
}
|