joachim99@77: /***************************************************************************
joachim99@77:                           ShellContextMenu.cpp  -  description
joachim99@77:                              -------------------
joachim99@77:     begin                : Sat Mar 4 2006
joachim99@77:     copyright            : (C) 2005-2007 by Joachim Eibl
joachim99@77:     email                : joachim dot eibl at gmx dot de
joachim99@77:  ***************************************************************************/
joachim99@77: 
joachim99@77: /***************************************************************************
joachim99@77:  *                                                                         *
joachim99@77:  *   This program is free software; you can redistribute it and/or modify  *
joachim99@77:  *   it under the terms of the GNU General Public License as published by  *
joachim99@77:  *   the Free Software Foundation; either version 2 of the License, or     *
joachim99@77:  *   (at your option) any later version.                                   *
joachim99@77:  *                                                                         *
joachim99@77:  ***************************************************************************/
joachim99@69: // ShellContextMenu.cpp: Implementierung der Klasse CShellContextMenu.
joachim99@69: //
joachim99@69: //////////////////////////////////////////////////////////////////////
joachim99@69: #ifdef _WIN32
joachim99@69: #include <windows.h>
joachim99@69: #include <shlobj.h>
joachim99@69: #include <malloc.h>
joachim99@69: #include <qstring.h>
joachim99@69: #include <qstringlist.h>
joachim99@69: #include <qwidget.h>
joachim99@69: #include <qdir.h>
joachim99@70: #include <QMenu>
joachim99@69: #include "ShellContextMenu.h"
joachim99@69: 
joachim99@69: #ifdef _DEBUG
joachim99@69: #undef THIS_FILE
joachim99@69: static char THIS_FILE[]=__FILE__;
joachim99@69: #define new DEBUG_NEW
joachim99@69: #endif
joachim99@69: 
joachim99@69: //////////////////////////////////////////////////////////////////////
joachim99@69: // Konstruktion/Destruktion
joachim99@69: //////////////////////////////////////////////////////////////////////
joachim99@69: 
joachim99@69: #define MIN_ID 100
joachim99@69: #define MAX_ID 10000
joachim99@69: 
joachim99@69: 
joachim99@70: void showShellContextMenu( const QString& itemPath, QPoint pt, QWidget* pParentWidget, QMenu* pMenu )
joachim99@69: {
joachim99@69:     CShellContextMenu scm;
joachim99@77:     scm.SetObjects(QDir::toNativeSeparators(QDir::cleanPath(itemPath)));
joachim99@69:     int id = scm.ShowContextMenu (pParentWidget, pt, pMenu);
joachim99@69:     if (id>=1)
joachim99@75:        pMenu->actions().value(id-1)->trigger();
joachim99@69: }
joachim99@69: 
joachim99@69: IContextMenu2 * g_IContext2 = NULL;
joachim99@69: IContextMenu3 * g_IContext3 = NULL;
joachim99@69: 
joachim99@69: CShellContextMenu::CShellContextMenu()
joachim99@69: {
joachim99@69: 	m_psfFolder = NULL;
joachim99@69: 	m_pidlArray = NULL;
joachim99@69: 	m_hMenu = NULL;
joachim99@69: }
joachim99@69: 
joachim99@69: CShellContextMenu::~CShellContextMenu()
joachim99@69: {
joachim99@69: 	// free all allocated datas
joachim99@69: 	if (m_psfFolder && bDelete)
joachim99@69: 		m_psfFolder->Release ();
joachim99@69: 	m_psfFolder = NULL;
joachim99@69: 	FreePIDLArray (m_pidlArray);
joachim99@69: 	m_pidlArray = NULL;
joachim99@69: 
joachim99@69: 	if (m_hMenu)
joachim99@69: 		DestroyMenu( m_hMenu );
joachim99@69: }
joachim99@69: 
joachim99@69: 
joachim99@69: 
joachim99@69: // this functions determines which version of IContextMenu is avaibale for those objects (always the highest one)
joachim99@69: // and returns that interface
joachim99@69: BOOL CShellContextMenu::GetContextMenu (void ** ppContextMenu, int & iMenuType)
joachim99@69: {
joachim99@69: 	*ppContextMenu = NULL;
joachim99@69: 	LPCONTEXTMENU icm1 = NULL;
joachim99@77: 
joachim99@77:         if ( m_psfFolder==0 )
joachim99@77:            return FALSE;
joachim99@69: 	
joachim99@69: 	// first we retrieve the normal IContextMenu interface (every object should have it)
joachim99@69: 	m_psfFolder->GetUIObjectOf (NULL, nItems, (LPCITEMIDLIST *) m_pidlArray, IID_IContextMenu, NULL, (void**) &icm1);
joachim99@69: 
joachim99@69: 	if (icm1)
joachim99@69: 	{	// since we got an IContextMenu interface we can now obtain the higher version interfaces via that
joachim99@69: 		if (icm1->QueryInterface (IID_IContextMenu3, ppContextMenu) == NOERROR)
joachim99@69: 			iMenuType = 3;
joachim99@69: 		else if (icm1->QueryInterface (IID_IContextMenu2, ppContextMenu) == NOERROR)
joachim99@69: 			iMenuType = 2;
joachim99@69: 
joachim99@69: 		if (*ppContextMenu) 
joachim99@69: 			icm1->Release(); // we can now release version 1 interface, cause we got a higher one
joachim99@69: 		else 
joachim99@69: 		{	
joachim99@69: 			iMenuType = 1;
joachim99@69: 			*ppContextMenu = icm1;	// since no higher versions were found
joachim99@69: 		}							// redirect ppContextMenu to version 1 interface
joachim99@69: 	}
joachim99@69: 	else
joachim99@69: 		return (FALSE);	// something went wrong
joachim99@69: 	
joachim99@69: 	return (TRUE); // success
joachim99@69: }
joachim99@69: 
joachim99@69: 
joachim99@69: LRESULT CALLBACK CShellContextMenu::HookWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
joachim99@69: {
joachim99@69: 	switch (message)
joachim99@69: 	{ 
joachim99@69: 	case WM_MENUCHAR:	// only supported by IContextMenu3
joachim99@69: 		if (g_IContext3)
joachim99@69: 		{
joachim99@69: 			LRESULT lResult = 0;
joachim99@69: 			g_IContext3->HandleMenuMsg2 (message, wParam, lParam, &lResult);
joachim99@69: 			return (lResult);
joachim99@69: 		}
joachim99@69: 		break;
joachim99@69: 
joachim99@69: 	case WM_DRAWITEM:
joachim99@69: 	case WM_MEASUREITEM:
joachim99@69: 		if (wParam) 
joachim99@69: 			break; // if wParam != 0 then the message is not menu-related
joachim99@69:   
joachim99@69: 	case WM_INITMENUPOPUP:
joachim99@69: 		if (g_IContext2)
joachim99@69: 			g_IContext2->HandleMenuMsg (message, wParam, lParam);
joachim99@69: 		else	// version 3
joachim99@69: 			g_IContext3->HandleMenuMsg (message, wParam, lParam);
joachim99@69: 		return (message == WM_INITMENUPOPUP ? 0 : TRUE); // inform caller that we handled WM_INITPOPUPMENU by ourself
joachim99@69: 		break;
joachim99@69: 
joachim99@69: 	default:
joachim99@69: 		break;
joachim99@69: 	}
joachim99@69: 
joachim99@69: 	// call original WndProc of window to prevent undefined bevhaviour of window
joachim99@69: 	return ::CallWindowProc ((WNDPROC) GetProp ( hWnd, TEXT ("OldWndProc")), hWnd, message, wParam, lParam);
joachim99@69: }
joachim99@69: 
joachim99@69: 
joachim99@70: UINT CShellContextMenu::ShowContextMenu(QWidget * pParentWidget, QPoint pt, QMenu* pMenu )
joachim99@69: {
Chris@112:         HWND hWnd = (HWND)pParentWidget->winId();
joachim99@69:         int iMenuType = 0;	// to know which version of IContextMenu is supported
joachim99@69: 	LPCONTEXTMENU pContextMenu;	// common pointer to IContextMenu and higher version interface
joachim99@69:    
joachim99@69: 	if (!GetContextMenu ((void**) &pContextMenu, iMenuType))	
joachim99@69: 		return (0);	// something went wrong
joachim99@69: 
joachim99@69: 	if (!m_hMenu)
joachim99@69: 	{
joachim99@69: 		DestroyMenu( m_hMenu );
joachim99@69: 		m_hMenu = CreatePopupMenu ();
joachim99@69: 	}
joachim99@69: 
joachim99@75:         int i;
joachim99@75:         QList<QAction*> actionList = pMenu->actions();
joachim99@75:         for( i=0; i<actionList.count(); ++i )
joachim99@69:         {
joachim99@75:            QString s = actionList.at(i)->text();
joachim99@69:            if (!s.isEmpty())
joachim99@75:               AppendMenuW( m_hMenu, MF_STRING, i+1, (LPCWSTR)s.utf16() );
joachim99@69:         }
joachim99@69:         AppendMenuW( m_hMenu, MF_SEPARATOR, i+1, L"" );
joachim99@69: 
joachim99@69: 	// lets fill the our popupmenu  
joachim99@69: 	pContextMenu->QueryContextMenu (m_hMenu, GetMenuItemCount (m_hMenu), MIN_ID, MAX_ID, CMF_NORMAL | CMF_EXPLORE);
joachim99@69:  
joachim99@69: 	// subclass window to handle menurelated messages in CShellContextMenu 
joachim99@69: 	WNDPROC OldWndProc;
joachim99@69: 	if (iMenuType > 1)	// only subclass if its version 2 or 3
joachim99@69: 	{
joachim99@69: 		OldWndProc = (WNDPROC) SetWindowLong (hWnd, GWL_WNDPROC, (DWORD) HookWndProc);
joachim99@69: 		if (iMenuType == 2)
joachim99@69: 			g_IContext2 = (LPCONTEXTMENU2) pContextMenu;
joachim99@69: 		else	// version 3
joachim99@69: 			g_IContext3 = (LPCONTEXTMENU3) pContextMenu;
joachim99@69: 	}
joachim99@69: 	else
joachim99@69: 		OldWndProc = NULL;
joachim99@69: 
Chris@112: 	UINT idCommand = TrackPopupMenu (m_hMenu,TPM_RETURNCMD | TPM_LEFTALIGN, pt.x(), pt.y(), 0, (HWND)pParentWidget->winId(), 0);
joachim99@69: 
joachim99@69: 	if (OldWndProc) // unsubclass
joachim99@69: 		SetWindowLong (hWnd, GWL_WNDPROC, (DWORD) OldWndProc);
joachim99@69: 
joachim99@69: 	if (idCommand >= MIN_ID && idCommand <= MAX_ID)	// see if returned idCommand belongs to shell menu entries
joachim99@69: 	{
joachim99@69: 		InvokeCommand (pContextMenu, idCommand - MIN_ID);	// execute related command
joachim99@69: 		idCommand = 0;
joachim99@69: 	}
joachim99@69: 	
joachim99@69: 	pContextMenu->Release();
joachim99@69: 	g_IContext2 = NULL;
joachim99@69: 	g_IContext3 = NULL;
joachim99@69: 
joachim99@69: 	return (idCommand);
joachim99@69: }
joachim99@69: 
joachim99@69: 
joachim99@69: void CShellContextMenu::InvokeCommand (LPCONTEXTMENU pContextMenu, UINT idCommand)
joachim99@69: {
joachim99@69: 	CMINVOKECOMMANDINFO cmi = {0};
joachim99@69: 	cmi.cbSize = sizeof (CMINVOKECOMMANDINFO);
joachim99@69: 	cmi.lpVerb = (LPSTR) MAKEINTRESOURCE (idCommand);
joachim99@69: 	cmi.nShow = SW_SHOWNORMAL;
joachim99@69: 	
joachim99@69: 	pContextMenu->InvokeCommand (&cmi);
joachim99@69: }
joachim99@69: 
joachim99@69: 
joachim99@69: void CShellContextMenu::SetObjects(const QString& strObject)
joachim99@69: {
joachim99@69: 	// only one object is passed
joachim99@69: 	QStringList strArray;
joachim99@69: 	strArray << strObject;	// create a CStringArray with one element
joachim99@69: 	
joachim99@69: 	SetObjects (strArray);		// and pass it to SetObjects (CStringArray &strArray)
joachim99@69: 								// for further processing
joachim99@69: }
joachim99@69: 
joachim99@69: 
joachim99@69: void CShellContextMenu::SetObjects(const QStringList &strList)
joachim99@69: {
joachim99@69: 	// free all allocated datas
joachim99@69: 	if (m_psfFolder && bDelete)
joachim99@69: 		m_psfFolder->Release ();
joachim99@69: 	m_psfFolder = NULL;
joachim99@69: 	FreePIDLArray (m_pidlArray);
joachim99@69: 	m_pidlArray = NULL;
joachim99@69: 	
joachim99@69: 	// get IShellFolder interface of Desktop (root of shell namespace)
joachim99@69: 	IShellFolder * psfDesktop = NULL;
joachim99@69: 	SHGetDesktopFolder (&psfDesktop);	// needed to obtain full qualified pidl
joachim99@69: 
joachim99@69: 	// ParseDisplayName creates a PIDL from a file system path relative to the IShellFolder interface
joachim99@69: 	// but since we use the Desktop as our interface and the Desktop is the namespace root
joachim99@69: 	// that means that it's a fully qualified PIDL, which is what we need
joachim99@69: 	LPITEMIDLIST pidl = NULL;
joachim99@69: 	
joachim99@75: 	psfDesktop->ParseDisplayName (NULL, 0, (LPOLESTR)strList[0].utf16(), NULL, &pidl, NULL);
joachim99@69: 
joachim99@69: 	// now we need the parent IShellFolder interface of pidl, and the relative PIDL to that interface
joachim99@69: 	LPITEMIDLIST pidlItem = NULL;	// relative pidl
joachim99@69: 	SHBindToParentEx (pidl, IID_IShellFolder, (void **) &m_psfFolder, NULL);
joachim99@69: 	free (pidlItem);
joachim99@69: 	// get interface to IMalloc (need to free the PIDLs allocated by the shell functions)
joachim99@69: 	LPMALLOC lpMalloc = NULL;
joachim99@69: 	SHGetMalloc (&lpMalloc);
joachim99@69: 	lpMalloc->Free (pidl);
joachim99@69: 
joachim99@69: 	// now we have the IShellFolder interface to the parent folder specified in the first element in strArray
joachim99@69: 	// since we assume that all objects are in the same folder (as it's stated in the MSDN)
joachim99@69: 	// we now have the IShellFolder interface to every objects parent folder
joachim99@69: 	
joachim99@69: 	IShellFolder * psfFolder = NULL;
joachim99@69: 	nItems = strList.size ();
joachim99@69: 	for (int i = 0; i < nItems; i++)
joachim99@69: 	{
joachim99@69:                 pidl=0;
joachim99@75: 		psfDesktop->ParseDisplayName (NULL, 0, (LPOLESTR)strList[i].utf16(), NULL, &pidl, NULL);
joachim99@69:                 if (pidl)
joachim99@69:                 {
joachim99@69:                      m_pidlArray = (LPITEMIDLIST *) realloc (m_pidlArray, (i + 1) * sizeof (LPITEMIDLIST));
joachim99@69:                      // get relative pidl via SHBindToParent
joachim99@69:                      SHBindToParentEx (pidl, IID_IShellFolder, (void **) &psfFolder, (LPCITEMIDLIST *) &pidlItem);
joachim99@69:                      m_pidlArray[i] = CopyPIDL (pidlItem);	// copy relative pidl to pidlArray
joachim99@69:                      free (pidlItem);
joachim99@69:                      lpMalloc->Free (pidl);		// free pidl allocated by ParseDisplayName
joachim99@69:                      psfFolder->Release ();
joachim99@69:                 }
joachim99@69: 	}
joachim99@69: 	lpMalloc->Release ();
joachim99@69: 	psfDesktop->Release ();
joachim99@69: 
joachim99@69: 	bDelete = TRUE;	// indicates that m_psfFolder should be deleted by CShellContextMenu
joachim99@69: }
joachim99@69: 
joachim99@69: 
joachim99@69: // only one full qualified PIDL has been passed
joachim99@69: void CShellContextMenu::SetObjects(LPITEMIDLIST /*pidl*/)
joachim99@69: {
joachim99@69: /*
joachim99@69:    // free all allocated datas
joachim99@69: 	if (m_psfFolder && bDelete)
joachim99@69: 		m_psfFolder->Release ();
joachim99@69: 	m_psfFolder = NULL;
joachim99@69: 	FreePIDLArray (m_pidlArray);
joachim99@69: 	m_pidlArray = NULL;
joachim99@69: 
joachim99@69: 		// full qualified PIDL is passed so we need
joachim99@69: 	// its parent IShellFolder interface and its relative PIDL to that
joachim99@69: 	LPITEMIDLIST pidlItem = NULL;
joachim99@69: 	SHBindToParent ((LPCITEMIDLIST) pidl, IID_IShellFolder, (void **) &m_psfFolder, (LPCITEMIDLIST *) &pidlItem);	
joachim99@69: 
joachim99@69: 	m_pidlArray = (LPITEMIDLIST *) malloc (sizeof (LPITEMIDLIST));	// allocate ony for one elemnt
joachim99@69: 	m_pidlArray[0] = CopyPIDL (pidlItem);
joachim99@69: 
joachim99@69: 
joachim99@69: 	// now free pidlItem via IMalloc interface (but not m_psfFolder, that we need later
joachim99@69: 	LPMALLOC lpMalloc = NULL;
joachim99@69: 	SHGetMalloc (&lpMalloc);
joachim99@69: 	lpMalloc->Free (pidlItem);
joachim99@69: 	lpMalloc->Release();
joachim99@69: 
joachim99@69: 	nItems = 1;
joachim99@69: 	bDelete = TRUE;	// indicates that m_psfFolder should be deleted by CShellContextMenu
joachim99@69: */
joachim99@69: }
joachim99@69: 
joachim99@69: 
joachim99@69: // IShellFolder interface with a relative pidl has been passed
joachim99@69: void CShellContextMenu::SetObjects(IShellFolder *psfFolder, LPITEMIDLIST pidlItem)
joachim99@69: {
joachim99@69: 	// free all allocated datas
joachim99@69: 	if (m_psfFolder && bDelete)
joachim99@69: 		m_psfFolder->Release ();
joachim99@69: 	m_psfFolder = NULL;
joachim99@69: 	FreePIDLArray (m_pidlArray);
joachim99@69: 	m_pidlArray = NULL;
joachim99@69: 
joachim99@69: 	m_psfFolder = psfFolder;
joachim99@69: 
joachim99@69: 	m_pidlArray = (LPITEMIDLIST *) malloc (sizeof (LPITEMIDLIST));
joachim99@69: 	m_pidlArray[0] = CopyPIDL (pidlItem);
joachim99@69: 	
joachim99@69: 	nItems = 1;
joachim99@69: 	bDelete = FALSE;	// indicates wheter m_psfFolder should be deleted by CShellContextMenu
joachim99@69: }
joachim99@69: 
joachim99@69: void CShellContextMenu::SetObjects(IShellFolder * psfFolder, LPITEMIDLIST *pidlArray, int nItemCount)
joachim99@69: {
joachim99@69: 	// free all allocated datas
joachim99@69: 	if (m_psfFolder && bDelete)
joachim99@69: 		m_psfFolder->Release ();
joachim99@69: 	m_psfFolder = NULL;
joachim99@69: 	FreePIDLArray (m_pidlArray);
joachim99@69: 	m_pidlArray = NULL;
joachim99@69: 
joachim99@69: 	m_psfFolder = psfFolder;
joachim99@69: 
joachim99@69: 	m_pidlArray = (LPITEMIDLIST *) malloc (nItemCount * sizeof (LPITEMIDLIST));
joachim99@69: 
joachim99@69: 	for (int i = 0; i < nItemCount; i++)
joachim99@69: 		m_pidlArray[i] = CopyPIDL (pidlArray[i]);
joachim99@69: 
joachim99@69: 	nItems = nItemCount;
joachim99@69: 	bDelete = FALSE;	// indicates wheter m_psfFolder should be deleted by CShellContextMenu
joachim99@69: }
joachim99@69: 
joachim99@69: 
joachim99@69: void CShellContextMenu::FreePIDLArray(LPITEMIDLIST *pidlArray)
joachim99@69: {
joachim99@69: 	if (!pidlArray)
joachim99@69: 		return;
joachim99@69: 
joachim99@69: 	int iSize = _msize (pidlArray) / sizeof (LPITEMIDLIST);
joachim99@69: 
joachim99@69: 	for (int i = 0; i < iSize; i++)
joachim99@69: 		free (pidlArray[i]);
joachim99@69: 	free (pidlArray);
joachim99@69: }
joachim99@69: 
joachim99@69: 
joachim99@69: LPITEMIDLIST CShellContextMenu::CopyPIDL (LPCITEMIDLIST pidl, int cb)
joachim99@69: {
joachim99@69: 	if (cb == -1)
joachim99@69: 		cb = GetPIDLSize (pidl); // Calculate size of list.
joachim99@69: 
joachim99@69:     LPITEMIDLIST pidlRet = (LPITEMIDLIST) calloc (cb + sizeof (USHORT), sizeof (BYTE));
joachim99@69:     if (pidlRet)
joachim99@69: 		CopyMemory(pidlRet, pidl, cb);
joachim99@69: 
joachim99@69:     return (pidlRet);
joachim99@69: }
joachim99@69: 
joachim99@69: 
joachim99@69: UINT CShellContextMenu::GetPIDLSize (LPCITEMIDLIST pidl)
joachim99@69: {  
joachim99@69: 	if (!pidl) 
joachim99@69: 		return 0;
joachim99@69: 	int nSize = 0;
joachim99@69: 	LPITEMIDLIST pidlTemp = (LPITEMIDLIST) pidl;
joachim99@69: 	while (pidlTemp->mkid.cb)
joachim99@69: 	{
joachim99@69: 		nSize += pidlTemp->mkid.cb;
joachim99@69: 		pidlTemp = (LPITEMIDLIST) (((LPBYTE) pidlTemp) + pidlTemp->mkid.cb);
joachim99@69: 	}
joachim99@69: 	return nSize;
joachim99@69: }
joachim99@69: 
joachim99@69: HMENU  CShellContextMenu::GetMenu()
joachim99@69: {
joachim99@69: 	if (!m_hMenu)
joachim99@69: 	{
joachim99@69: 		m_hMenu = CreatePopupMenu();	// create the popupmenu (its empty)
joachim99@69: 	}
joachim99@69: 	return (m_hMenu);
joachim99@69: }
joachim99@69: 
joachim99@69: 
joachim99@69: // this is workaround function for the Shell API Function SHBindToParent
joachim99@69: // SHBindToParent is not available under Win95/98
joachim99@69: HRESULT CShellContextMenu::SHBindToParentEx (LPCITEMIDLIST pidl, REFIID riid, VOID **ppv, LPCITEMIDLIST *ppidlLast)
joachim99@69: {
joachim99@69: 	HRESULT hr = 0;
joachim99@69: 	if (!pidl || !ppv)
joachim99@69: 		return E_POINTER;
joachim99@69: 	
joachim99@69: 	int nCount = GetPIDLCount (pidl);
joachim99@69: 	if (nCount == 0)	// desktop pidl of invalid pidl
joachim99@69: 		return E_POINTER;
joachim99@69: 
joachim99@69: 	IShellFolder * psfDesktop = NULL;
joachim99@69: 	SHGetDesktopFolder (&psfDesktop);
joachim99@69: 	if (nCount == 1)	// desktop pidl
joachim99@69: 	{
joachim99@69: 		if ((hr = psfDesktop->QueryInterface(riid, ppv)) == S_OK)
joachim99@69: 		{
joachim99@69: 			if (ppidlLast) 
joachim99@69: 				*ppidlLast = CopyPIDL (pidl);
joachim99@69: 		}
joachim99@69: 		psfDesktop->Release ();
joachim99@69: 		return hr;
joachim99@69: 	}
joachim99@69: 
joachim99@69: 	LPBYTE pRel = GetPIDLPos (pidl, nCount - 1);
joachim99@69: 	LPITEMIDLIST pidlParent = NULL;
joachim99@69: 	pidlParent = CopyPIDL (pidl, pRel - (LPBYTE) pidl);
joachim99@69: 	IShellFolder * psfFolder = NULL;
joachim99@69: 	
joachim99@69: 	if ((hr = psfDesktop->BindToObject (pidlParent, NULL, IID_IShellFolder, (void **) &psfFolder)) != S_OK)
joachim99@69: 	{
joachim99@69: 		free (pidlParent);
joachim99@69: 		psfDesktop->Release ();
joachim99@69: 		return hr;
joachim99@69: 	}
joachim99@69: 	if ((hr = psfFolder->QueryInterface (riid, ppv)) == S_OK)
joachim99@69: 	{
joachim99@69: 		if (ppidlLast)
joachim99@69: 			*ppidlLast = CopyPIDL ((LPCITEMIDLIST) pRel);
joachim99@69: 	}
joachim99@69: 	free (pidlParent);
joachim99@69: 	psfFolder->Release ();
joachim99@69: 	psfDesktop->Release ();
joachim99@69: 	return hr;
joachim99@69: }
joachim99@69: 
joachim99@69: 
joachim99@69: LPBYTE CShellContextMenu::GetPIDLPos (LPCITEMIDLIST pidl, int nPos)
joachim99@69: {
joachim99@69: 	if (!pidl)
joachim99@69: 		return 0;
joachim99@69: 	int nCount = 0;
joachim99@69: 	
joachim99@69: 	BYTE * pCur = (BYTE *) pidl;
joachim99@69: 	while (((LPCITEMIDLIST) pCur)->mkid.cb)
joachim99@69: 	{
joachim99@69: 		if (nCount == nPos)
joachim99@69: 			return pCur;
joachim99@69: 		nCount++;
joachim99@69: 		pCur += ((LPCITEMIDLIST) pCur)->mkid.cb;	// + sizeof(pidl->mkid.cb);
joachim99@69: 	}
joachim99@69: 	if (nCount == nPos) 
joachim99@69: 		return pCur;
joachim99@69: 	return NULL;
joachim99@69: }
joachim99@69: 
joachim99@69: 
joachim99@69: int CShellContextMenu::GetPIDLCount (LPCITEMIDLIST pidl)
joachim99@69: {
joachim99@69: 	if (!pidl)
joachim99@69: 		return 0;
joachim99@69: 
joachim99@69: 	int nCount = 0;
joachim99@69: 	BYTE*  pCur = (BYTE *) pidl;
joachim99@69: 	while (((LPCITEMIDLIST) pCur)->mkid.cb)
joachim99@69: 	{
joachim99@69: 		nCount++;
joachim99@69: 		pCur += ((LPCITEMIDLIST) pCur)->mkid.cb;
joachim99@69: 	}
joachim99@69: 	return nCount;
joachim99@69: }
joachim99@69: 
joachim99@69: #endif
joachim99@69: