Mouse Gestures for Internet Explorer

///////////////////////////////////////////////////////////////
//
// MouseGestures.cpp
//
// Created: 01/04/2004
// Copyright (c) 2004 Ralph Hare (ralph.hare@ysgyfarnog.co.uk)
// All rights reserved.
//
// The code and information is provided "as-is" without
// warranty of any kind, either expressed or implied.
//
///////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "resource.h"
#include "tstring.h"
#include "BrowserHelperObject.h"
#include "MouseGesturesCfg.h"

namespace
{
    LPCTSTR KEY_BHO         = _T( "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Browser Helper Objects" );
    LPCTSTR KEY_EXTENSIONS  = _T( "SOFTWARE\\Microsoft\\Internet Explorer\\Extensions" );
    LPCTSTR EXTENSION_CLSID = _T( "{4E660F19-E91E-41e1-88EF-D1DFAB118F67}" );

    tstring StringFromCLSID( const CLSID &clsid )
    {
        LPOLESTR    pclsid = NULL;

        if( FAILED( ::StringFromCLSID( clsid, &pclsid ) ) )
        {
            return _T( "" );
        }

        USES_CONVERSION;
        tstring     ret( OLE2T( pclsid ) );
        ::CoTaskMemFree( pclsid );

        return ret;
    }

    class RegKeyHelper : public CRegKey
    {
    public:
        HRESULT Open( HKEY hkeyParent, LPCTSTR keyName, bool forceOpen )
        {
            if( forceOpen )
            {
                return Create( hkeyParent, keyName );
            }

            return CRegKey::Open( hkeyParent, keyName );
        }
    };

    HRESULT Register( bool doRegister )
    {
        USES_CONVERSION;

        RegKeyHelper    bhoKey;
        if( bhoKey.Open( HKEY_LOCAL_MACHINE, KEY_BHO, doRegister ) == ERROR_SUCCESS )
        {
            tstring clsid = StringFromCLSID( __uuidof( BrowserHelperObject ) );

            if( doRegister )
            {
                CRegKey tmp;
                if( tmp.Create( bhoKey, clsid.c_str() ) == ERROR_SUCCESS )
                {
                    tmp.SetStringValue( _T( "" ), _T( "Mouse Gestures" ) );
                }
            }
            else
            {
                bhoKey.DeleteSubKey( clsid.c_str() );
            }
        }

        RegKeyHelper    extKey;
        if( extKey.Open( HKEY_LOCAL_MACHINE, KEY_EXTENSIONS, doRegister ) == ERROR_SUCCESS )
        {
            if( doRegister )
            {
                CRegKey tmp;
                if( tmp.Create( extKey, EXTENSION_CLSID ) == ERROR_SUCCESS )
                {
                    tmp.SetStringValue( _T( "" ), _T( "Mouse Gestures Menu" ) );
                    tmp.SetStringValue( _T( "MenuCustomize" ), _T( "Tools" ) );
                    tmp.SetStringValue( _T( "CLSID" ), _T( "{1FBA04EE-3024-11d2-8F1F-0000F87ABD16}" ) );
                    tmp.SetStringValue( _T( "MenuText" ), _T( "Mouse Gestures..." ) );
                    tmp.SetStringValue( _T( "MenuStatusBar" ), _T( "Configure Mouse Gestures" ) );
                    tmp.SetStringValue( 
                                _T( "ClsidExtension" ), 
                                StringFromCLSID( __uuidof( MouseGesturesCfg ) ).c_str()
                                );
                }
            }
            else
            {
                extKey.DeleteSubKey( EXTENSION_CLSID );
            }
        }

        return S_OK;
    }
}

[ module(dll, uuid = "{D06BA17F-E115-4D9D-993F-58023E9B3DC3}", 
		 name = "MouseGestures", 
		 helpstring = "Drowse: Mouse Gestures Type Library",
		 resource_name = "IDR_MOUSEGESTURES") ]
class CMouseGesturesModule
{
public:
    HRESULT RegisterAppId()
    {
        return Register( true );
    }

    HRESULT UnregisterAppId()
    {
        return Register( false );
    }

    BOOL WINAPI DllMain( DWORD dwReason, LPVOID )
    {
    //
    // conditionally load in explorer.exe
    //
        TCHAR   fileName[ MAX_PATH + 1 ] = { 0 };
        ::GetModuleFileName( NULL, fileName, MAX_PATH );
        ::PathStripPath( fileName );

        if( _tcsicmp( fileName, _T( "explorer.exe" ) ) == 0 )
        {
            return GestureManager::LoadInExplorer();
        }

        return TRUE;
    }
};