repos_ecs/其他2015后/光盘刻录类/Nero 1.08SDK与例子/NeroSDK-1.08/NeroVisionAPI/Samples/NVAPIExample/PageFirst.cpp

/******************************************************************************
|* THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
|* ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
|* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
|* PARTICULAR PURPOSE.
|* 
|* Copyright 1995-2005 Nero AG. All Rights Reserved.
|*-----------------------------------------------------------------------------
|* NeroSDK / NVAPIExample
|*
|* PROGRAM: PageFirst.cpp
|*
|* PURPOSE: Implementation of the first page.
******************************************************************************/

#include "stdafx.h"
#include "NVAPIExample.h"
#include "PageFirst.h"
#include "PageData.h"
#include "Sheet.h"
#include "NVAPIExampleDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

// This is our custom message.
// 
#define UM_QUIT_WITH_DELAY		(WM_APP + 1)


CPageFirst::CPageFirst(CSheet * pParent)
	: CPage(CPageFirst::IDD, pParent)
	, m_iVideoItemSequence (1)
	, m_iSlideshowItemSequence (1)
	, m_iVideoStreamSequence (1)
	, m_bLoadAndBurn (false)
{
	//{{AFX_DATA_INIT(CPageFirst)
	m_iProjectType = 0;
	m_iEncodingType = 0;
	//}}AFX_DATA_INIT
}


void CPageFirst::DoDataExchange(CDataExchange* pDX)
{
	CPage::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CPageFirst)
	DDX_Control(pDX, IDC_INSERT_AUDIOSTREAM, c_InsertAudioStream);
	DDX_Control(pDX, IDC_INSERT_VIDEOSTREAM, c_InsertVideoStream);
	DDX_Control(pDX, IDC_ENCODING_TYPE, c_EncodingType);
	DDX_Control(pDX, IDC_REMOVEALL, c_RemoveAll);
	DDX_Control(pDX, IDC_EXPORT, c_Export);
	DDX_Control(pDX, IDC_PREVIEW, c_Preview);
	DDX_Control(pDX, IDC_INSERT_AUDIO, c_InsertAudio);
	DDX_Control(pDX, IDC_SAVE, c_Save);
	DDX_Control(pDX, IDC_REMOVE, c_Remove);
	DDX_Control(pDX, IDC_PROJECT_TYPE, c_ProjectType);
	DDX_Control(pDX, IDC_LOAD, c_Load);
	DDX_Control(pDX, IDC_INSERT_VIDEO, c_InsertVideo);
	DDX_Control(pDX, IDC_INSERT_SLIDE, c_InsertSlide);
	DDX_Control(pDX, IDC_INSERT_IMAGE, c_InsertImage);
	DDX_Control(pDX, IDC_TRANSITION_TYPE, c_TransitionType);
	DDX_Control(pDX, IDC_CONTENT, c_Content);
	DDX_CBIndex(pDX, IDC_PROJECT_TYPE, m_iProjectType);
	DDX_CBIndex(pDX, IDC_ENCODING_TYPE, m_iEncodingType);
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CPageFirst, CPage)
//{{AFX_MSG_MAP(CPageFirst)
	ON_BN_CLICKED(IDC_LOAD, OnLoad)
	ON_BN_CLICKED(IDC_SAVE, OnSave)
	ON_BN_CLICKED(IDC_INSERT_VIDEO, OnInsertVideo)
	ON_BN_CLICKED(IDC_REMOVE, OnRemove)
	ON_BN_CLICKED(IDC_INSERT_SLIDE, OnInsertSlide)
	ON_NOTIFY(TVN_SELCHANGED, IDC_CONTENT, OnSelchangedContent)
	ON_CBN_SELCHANGE(IDC_TRANSITION_TYPE, OnSelchangeTransitionType)
	ON_BN_CLICKED(IDC_INSERT_IMAGE, OnInsertImage)
	ON_NOTIFY(TVN_BEGINLABELEDIT, IDC_CONTENT, OnBeginlabeleditContent)
	ON_BN_CLICKED(IDC_INSERT_AUDIO, OnInsertAudio)
	ON_BN_CLICKED(IDC_LOAD_AND_BURN, OnLoadAndBurn)
	ON_WM_DESTROY()
	ON_BN_CLICKED(IDC_PREVIEW, OnPreview)
	ON_BN_CLICKED(IDC_EXPORT, OnExport)
	ON_BN_CLICKED(IDC_REMOVEALL, OnRemoveall)
	ON_BN_CLICKED(IDC_INSERT_VIDEOSTREAM, OnInsertVideoStream)
	ON_BN_CLICKED(IDC_INSERT_AUDIOSTREAM, OnInsertAudioStream)
	//}}AFX_MSG_MAP
	ON_MESSAGE(UM_QUIT_WITH_DELAY, OnQuitWithDelay)
END_MESSAGE_MAP()

BOOL CPageFirst::OnInitDialog() 
{
	CPage::OnInitDialog();

	if (m_ilIcons.Create (16, 16, ILC_COLOR|ILC_MASK, 3, 1))
	{
		const static UINT uIconIDs[] = {
			IDI_IMAGE,
			IDI_SOUND,
			IDI_VIDEO,
			IDI_MAIN,
		};

		for (int i = 0; i < sizeof (uIconIDs)/sizeof (uIconIDs[0]); i ++)
		{
			HICON hIcon = (HICON) ::LoadImage (AfxGetInstanceHandle (), MAKEINTRESOURCE (uIconIDs[i]), IMAGE_ICON, 16, 16, LR_DEFAULTCOLOR);
			
			m_ilIcons.Add (hIcon);
			
			DestroyIcon (hIcon);
		}

		c_Content.SetImageList (&m_ilIcons, TVSIL_NORMAL);
	}
	
	// enum transition effects and fillin effect combobox
	NeroVisionAPI::IEffectEnumeratorPtr efEnum;
	{
		if (FAILED(efEnum.CreateInstance(__uuidof(NeroVisionAPI::EffectEnumerator))))	
		{
			MessageBox("IEffectEnumeratorPtr CreateInstance failed");
			return TRUE;
		}

		int index = c_TransitionType.AddString("<none>");
		c_TransitionType.SetItemData(index, (DWORD)ST_NONEEFFECT);
		for (int i = 0; i < efEnum->GetNumEffects(); i++) 
		{
			BSTR typeID, displayName;
			NeroVisionAPI::EffectCategory category;
			if (efEnum->GetEffectBaseInfo(i, &typeID, &displayName, &category)) 
			{
				if (category == NeroVisionAPI::EffectCategory_Transition)	
				{
					_bstr_t* id = new _bstr_t(typeID, false);
					_bstr_t name(displayName, false);
					int index = c_TransitionType.AddString(name);
					c_TransitionType.SetItemData(index, (DWORD)id);
				}
			}
		}
	}


	// On the first update, set the proper state of controls.
	// 
	UpdateControls ();

	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void CPageFirst::OnDestroy() 
{
	for (int i = 0; i < c_TransitionType.GetCount(); i++) 
	{
		_bstr_t* id = (_bstr_t*)c_TransitionType.GetItemData(i);
		if (id)
		{
			delete id;
		}
	}

	CPage::OnDestroy();
}

bool CPageFirst::Create (void)
{
	// This is a CPage virtual function. Just create the dialog and return
	// success.
	// 
	return CDialog::Create (m_lpszTemplateName, m_pParentWnd) != FALSE;
}

bool CPageFirst::OnNext (void)
{
	if (m_bLoadAndBurn)
	{
		return false;
	}
	else
	{
		// This method will be called whenever a main window's Next button is
		// clicked. We can use it to override the default behavior by returning
		// true.
		// 
		IXMLDOMDocumentPtr pDocument = BuildXML ();

		if (pDocument != NULL)
		{
			// If XML was built successfully, set it to the common page
			// data and let the default behavior of the button switch
			// to the next page.
			// 
			USES_CONVERSION;
			GetPageData ()->m_sXML = W2CA (pDocument->xml);

			return false;
		}
		else
		{
			// If there was an error building XML, report it and don't
			// switch to the next page.
			// 
			AfxMessageBox (IDS_ERROR_BUILDING_XML);

			return true;
		}
	}
}

void CPageFirst::OnChangeState (bool bActivate, bool bForward)
{
	if (bActivate && bForward)
	{
		// If we are activated in the forward direction (normally only
		// once at the beginning), check if project object was
		// successfully created. If not, fail miserably as we can't
		// proceed without it. We will actually post a message to ourselves
		// to delay the quitting and to allow the main window to be
		// displayed.
		// 
		if (GetPageData ()->m_pProject == NULL)
		{
			PostMessage (UM_QUIT_WITH_DELAY);
		}
	}
}

LRESULT CPageFirst::OnQuitWithDelay (WPARAM wParam, LPARAM lParam)
{
	// This handler will be called if NeroVisionAPI's Project object
	// could not have been created. We can't do anything but quit.
	// 
	AfxMessageBox (IDS_ERROR_INITIALIZING_NERO_VISION_API);
	PostQuitMessage (0);

	return 0;
}

void CPageFirst::OnLoad() 
{
	// This is a Load handler. Ask for a file to load.
	// 
	CString sFilter;
	sFilter.LoadString (IDS_XML_FILES_FILTER);
	CFileDialog dlg (TRUE, "xml", NULL,
		OFN_EXPLORER|OFN_HIDEREADONLY,
		sFilter, this);
	
	if (IDOK == dlg.DoModal ())
	{
		// If ok was clicked, create an instance of XML document and
		// load the document. If loaded successfully, parse the XML file
		// and fill the dialog controls accordingly.
		// 
		try
		{
			try
			{
				IXMLDOMDocumentPtr pDocument;
				
				// Create object instance... Try MSXML 4.0 first, if not
				// then 3.0. Version independent PROGID loads 3.0 even if
				// 4.0 is installed. We want 4.0 because it supports schema
				// validation.
				// 
				if (FAILED (pDocument.CreateInstance ("Msxml2.DOMDocument.4.0")))
				{
					EVAL_HR (pDocument.CreateInstance ("Msxml2.DOMDocument.3.0"));
				}

				// Load the document...
				// 
				VARIANT_BOOL bSuccess;
				bSuccess = pDocument->load ((LPCSTR) dlg.GetPathName ());
				if (bSuccess)
				{
					// Parse the document...
					// 
					ParseXMLDocument (pDocument);
				}
				else
				{
					IXMLDOMParseErrorPtr pParseError = pDocument->parseError;
					
					CString str, sFormat;
					USES_CONVERSION;
					VERIFY (sFormat.LoadString (IDS_XML_PARSE_ERROR));
					str.Format (sFormat,
						pParseError->errorCode, pParseError->line, pParseError->linepos,
						W2CA (pParseError->reason), W2CA (pParseError->srcText));
					AfxMessageBox (str);
				}
			}
			catch (HRESULT hr)
			{
				throw _com_error (hr);
			}
		}
		catch (_com_error e)
		{
			c_Content.DeleteAllItems ();
			CString str;
			VERIFY (str.LoadString (IDS_ERROR_LOADING_XML));
			
			CString sMessage;
			sMessage.Format ("%s (%s)", str, e.ErrorMessage ());
			AfxMessageBox (sMessage);
		}
		catch (...)
		{
			// If an error occurs, delete everything and display an error.
			// 
			c_Content.DeleteAllItems ();
			AfxMessageBox (IDS_ERROR_LOADING_XML);
		}

		// No matter if the document is loaded successfully or not,
		// update the controls to reflect the new state.
		// 
		UpdateControls ();
	}
}

void CPageFirst::OnSave() 
{
	// This is the save XML handler.
	// 
	IXMLDOMDocumentPtr pDocument;

	// Build the XML from the project settings.
	// 
	pDocument = BuildXML ();

	if (pDocument == NULL)
	{
		// If ther is an error, notify the user.
		// 
		AfxMessageBox (IDS_ERROR_BUILDING_XML);
	}
	else
	{
		// If no error, ask the user for a filename to save the XML to.
		// 
		CString sFilter;
		sFilter.LoadString (IDS_XML_FILES_FILTER);
		CFileDialog dlg (FALSE, "xml", NULL,
			OFN_HIDEREADONLY|OFN_EXPLORER|OFN_OVERWRITEPROMPT,
			sFilter, this);
		
		if (IDOK == dlg.DoModal ())
		{
			// If filename is given, use the document's save method to save
			// the XML to a file.
			// 
			try
			{
				EVAL_HR (pDocument->save ((LPCSTR) dlg.GetPathName ()));
			}
			catch (...)
			{
				// Display a message on error.
				// 
				AfxMessageBox (IDS_ERROR_SAVING_XML);
			}
		}
	}
}


void CPageFirst::OnInsertVideo() 
{
	// This is a handler to insert video to project. Ask for a video
	// filename.
	// 
	CString sFilter;
	sFilter.LoadString (IDS_VIDEO_FILES_FILTER);
	CFileDialog dlg (TRUE, NULL, NULL,
		OFN_EXPLORER|OFN_HIDEREADONLY,
		sFilter, this);
	
	if (IDOK == dlg.DoModal ())
	{
		// If video file is selected insert it into project.
		// 
		CString sFormat;
		CString sVideoItemName;
		sFormat.LoadString (IDS_VIDEO_TITLE_FORMAT);
		sVideoItemName.Format (sFormat, m_iVideoItemSequence++);
	
		InsertVideo (sVideoItemName, dlg.GetPathName ());

		// After insertion, update the controls.
		// 
		UpdateControls ();
	}
}

HTREEITEM CPageFirst::InsertVideo (LPCSTR psVideoItemName, LPCSTR psPath)
{
	// This method inserts the video into the project (tree ctrl).
	// 
	HTREEITEM hVideoItem = c_Content.InsertItem (psVideoItemName, 3, 3);
	if (hVideoItem != NULL)
	{
		c_Content.SetItemData (hVideoItem, CONTENTTYPE::VIDEOTITLE);

		HTREEITEM hVideoSubItem;
		hVideoSubItem = c_Content.InsertItem (psPath, 2, 2, hVideoItem);
		if (hVideoSubItem != NULL)
		{
			c_Content.SetItemData (hVideoSubItem, SUBITEMTYPE::ST_VIDEOPATH);
		}
		
		c_Content.Expand (hVideoItem, TVE_EXPAND);
	}

	return hVideoItem;
}

void CPageFirst::InsertAudio (HTREEITEM hVideoItem, LPCSTR psAudioPath)
{
	HTREEITEM hPathName = c_Content.InsertItem (psAudioPath, 1, 1, hVideoItem);
	
	if (hPathName != NULL)
	{
		c_Content.SetItemData (hPathName, SUBITEMTYPE::ST_AUDIOPATH);
	}
}

void CPageFirst::OnRemove() 
{
	// This is a remove handler. First find the selected tree item.
	// 
	HTREEITEM hSelectedItem = c_Content.GetSelectedItem ();
	
	// If there is one...
	// 
	if (hSelectedItem != NULL)
	{
		// Find the root item of the selected item.
		// 
		for (HTREEITEM hParentItem = hSelectedItem;
			hParentItem != NULL;
			hSelectedItem = hParentItem, hParentItem = c_Content.GetParentItem (hSelectedItem))
				;
		
		// Now remove it...
		// 
		c_Content.DeleteItem (hSelectedItem);
		
		UpdateControls ();
	}
}

void CPageFirst::OnInsertSlide() 
{
	// This method inserts an image into the project (tree ctrl) along
	// with the two transitions (one before and one after the image).
	// 
	CString sFilter;
	sFilter.LoadString (IDS_IMAGE_FILES_FILTER);
	CFileDialog dlg (TRUE, NULL, NULL,
		OFN_EXPLORER|OFN_HIDEREADONLY,
		sFilter, this);
	
	if (IDOK == dlg.DoModal ())
	{
		CString sFormat;
		CString sSlideshowItemName;
		sFormat.LoadString (IDS_SLIDE_SHOW_FORMAT);
		sSlideshowItemName.Format (sFormat, m_iSlideshowItemSequence++);
		
		HTREEITEM hSlideItem = InsertSlideshow (sSlideshowItemName);

		// Insert an "empty" transition before and after the image.
		// 
		InsertTransition (hSlideItem);
		InsertImage (hSlideItem, dlg.GetPathName ());
		InsertTransition (hSlideItem);
		
		c_Content.Expand (hSlideItem, TVE_EXPAND);
		
		UpdateControls ();
	}
}

HTREEITEM CPageFirst::InsertSlideshow (LPCSTR psSlideshowName)
{
	// This is a helper method for inserting a slide show image.
	// 
	HTREEITEM hSlideItem = c_Content.InsertItem (psSlideshowName, 3, 3);
	c_Content.SetItemData (hSlideItem, CONTENTTYPE::SLIDESHOW);

	return hSlideItem;
}

void CPageFirst::InsertTransition (HTREEITEM hSlideItem, const int transitionIndex)
{
	// This is a helper method for inserting a transition.
	// 
	// transition also be insert before audio

	HTREEITEM childItem = c_Content.GetChildItem(hSlideItem);
	if (childItem != NULL)	
	{
		HTREEITEM nextchildItem = c_Content.GetNextSiblingItem(childItem);
		while (nextchildItem != NULL)
		{
			if (c_Content.GetItemData(nextchildItem) == ST_AUDIOSTREAM 
				|| c_Content.GetItemData(nextchildItem) == ST_AUDIOPATH)
			{
				HTREEITEM hTransition = c_Content.InsertItem ("", 0, 0, hSlideItem, childItem);
				ChangeTransition (hTransition, transitionIndex);
				break;
			}
			childItem = nextchildItem;
			nextchildItem = c_Content.GetNextSiblingItem(childItem);
		}		
		if (nextchildItem == NULL)
		{
			HTREEITEM hTransition = c_Content.InsertItem ("", 0, 0, hSlideItem);
			ChangeTransition (hTransition, transitionIndex);
		}
	}
	else
	{
		HTREEITEM hTransition = c_Content.InsertItem ("", 0, 0, hSlideItem);
		ChangeTransition (hTransition, transitionIndex);
	}

}

void CPageFirst::OnInsertVideoStream() 
{
	// video stream is created by VideoProvider
	// created in pagedata.h
	// function in ContentProvider.cpp

	CString sVideoStreamName;
	sVideoStreamName.Format(IDS_VIDEOSTREAM_FORMAT, m_iVideoStreamSequence++);

	CString sVideoStreamContent = "Test counter";
	InsertVideoStream (sVideoStreamName, "Test counter");
	UpdateControls ();
}

HTREEITEM CPageFirst::InsertVideoStream (LPCSTR psVideoStreamName, LPCSTR psVideoStreamContent)
{
	// This method inserts the video into the project (tree ctrl).
	// 
	HTREEITEM hVideoStreamItem = c_Content.InsertItem (psVideoStreamName, 3, 3);
	if (hVideoStreamItem != NULL)
	{
		c_Content.SetItemData (hVideoStreamItem, CONTENTTYPE::VIDEOTITLE);
		HTREEITEM hVideoStreamSubItem;

		hVideoStreamSubItem = c_Content.InsertItem (psVideoStreamContent, 2, 2, hVideoStreamItem);
		if (hVideoStreamSubItem != NULL)
		{
			c_Content.SetItemData (hVideoStreamSubItem, SUBITEMTYPE::ST_VIDEOSTREAM);
		}
		
		c_Content.Expand (hVideoStreamItem, TVE_EXPAND);
	}
	return hVideoStreamItem;
}

void CPageFirst::OnInsertAudioStream() 
{
	// audio stream is created by VideoProvider
	// created in pagedata.h
	// function in ContentProvider.cpp


	HTREEITEM hSelectedItem = c_Content.GetSelectedItem ();
	if (hSelectedItem != NULL)
	{
		HTREEITEM hParentItem = c_Content.GetParentItem (hSelectedItem);
		if (hParentItem == NULL)
		{
			hParentItem = hSelectedItem;
		}
		InsertAudioStream(hParentItem, "Morse Message");

	}
	UpdateControls ();
}

void CPageFirst::InsertAudioStream (HTREEITEM hVideoItem, LPCSTR psAudioStreamName)
{
	HTREEITEM hPathName = c_Content.InsertItem (psAudioStreamName, 1, 1, hVideoItem);
	
	if (hPathName != NULL)
	{
		c_Content.SetItemData (hPathName, SUBITEMTYPE::ST_AUDIOSTREAM);
	}

}


void CPageFirst::InsertImage (HTREEITEM hSlideItem, LPCSTR psImagePath)
{
	// This is a helper method for inserting an image after an initial
	// image has been inserted into a slideshow with InsertSlideshow.
	// 
	// image has to be insert before audio

	HTREEITEM childItem = c_Content.GetChildItem(hSlideItem);
	if (childItem != NULL)	
	{
		HTREEITEM nextchildItem = c_Content.GetNextSiblingItem(childItem);
		while (nextchildItem != NULL)
		{
			if (c_Content.GetItemData(nextchildItem) == ST_AUDIOSTREAM 
				|| c_Content.GetItemData(nextchildItem) == ST_AUDIOPATH)
			{
				c_Content.InsertItem (psImagePath, 0, 0, hSlideItem, childItem);
				c_Content.SetItemData (hSlideItem, SUBITEMTYPE::ST_IMAGEPATH);
				break;
			}
			childItem = nextchildItem;
			nextchildItem = c_Content.GetNextSiblingItem(childItem);
		}		
		if (nextchildItem == NULL)
		{
			HTREEITEM hPathName = c_Content.InsertItem (psImagePath, 0, 0, hSlideItem);
			c_Content.SetItemData (hPathName, SUBITEMTYPE::ST_IMAGEPATH);
		}
	}
	else
	{
		HTREEITEM hPathName = c_Content.InsertItem (psImagePath, 0, 0, hSlideItem);
		c_Content.SetItemData (hPathName, SUBITEMTYPE::ST_IMAGEPATH);
	}
}

void CPageFirst::ChangeTransition (HTREEITEM hItem, const int transitionIndex)
{
	// This method is used for changing the transition type in the project.
	// First make sure the transition is valid.
	// 
	ASSERT (0 <= transitionIndex && transitionIndex <= c_TransitionType.GetCount());

	CString str;
	CString sFormat;
	CString sTransitionName;
	
	// Get the actual transition name from the combobox. The strings should
	// be in the same order as the TRANSITION enums.
	// 
	c_TransitionType.GetLBText (transitionIndex, sTransitionName);
	
	// Get the transition formatting string from the string table and
	// create the final string that we are going to set to this item.
	// 
	sFormat.LoadString (IDS_TRANSITION_FORMAT);
	str.Format (sFormat, sTransitionName);
	
	c_Content.SetItemText (hItem, str);
	c_Content.SetItemData (hItem, transitionIndex);
}

void CPageFirst::OnSelchangedContent(NMHDR* pNMHDR, LRESULT* pResult) 
{
	NM_TREEVIEW* pNMTreeView = (NM_TREEVIEW*)pNMHDR;

	// Every time the selection of tree ctrl changes, update the controls'
	// states.
	// 
	UpdateControls ();
	
	*pResult = 0;
}

void CPageFirst::UpdateControls (void)
{
	// This method updates the controls' states according to the state
	// of the project.
	// 
	HTREEITEM hSelectedItem = c_Content.GetSelectedItem ();

	// Save button should be enabled if there is at least one item in
	// the project tree ctrl (if there is something worth saving).
	// Remove button should be enbled if something is selected.
	// 
	BOOL enable = c_Content.GetFirstVisibleItem () != NULL;
	c_Save.EnableWindow (enable);
	c_Preview.EnableWindow (enable);
	c_RemoveAll.EnableWindow (enable);
	c_Remove.EnableWindow (hSelectedItem != NULL);

	// we can export only one title at one time
	c_Export.EnableWindow (hSelectedItem != NULL);

	bool bEnableTransitionType = false;
	bool bEnableInsertImage = false;
	bool bEnableInsertAudio = false;
	HTREEITEM hItemTopLevel = c_Content.GetParentItem (hSelectedItem);
	
	if (hItemTopLevel != NULL)
	{
		// This is the second level of items. See if the parent is a
		// slideshow item.
		// 
		if (c_Content.GetItemData (hItemTopLevel) == CONTENTTYPE::SLIDESHOW)
		{
			// Yes it is a slideshow. Now check to see if the particular
			// item is a transition item.
			// 
			int transition = (SUBITEMTYPE) c_Content.GetItemData (hSelectedItem);
			bEnableTransitionType = IsTransition (transition);
			if (bEnableTransitionType)
			{
				// Set the transition of the currently selected item.
				// 
				c_TransitionType.SetCurSel ((int) transition);
			}

			bEnableInsertImage = true;
		}
	}
	else
	{
		bEnableInsertImage = hSelectedItem != NULL &&
							c_Content.GetItemData (hSelectedItem) == CONTENTTYPE::SLIDESHOW;
		hItemTopLevel = hSelectedItem;
	}

	if (hItemTopLevel != NULL)
	{
		// Look if an audio item is already present among the child items.
		// If not, we will enable the insert button.
		// 

		
		HTREEITEM hChildItem = c_Content.GetChildItem (hItemTopLevel);
		bEnableInsertAudio = true;
		
		while (hChildItem != NULL)
		{
			DWORD dwAudioType = c_Content.GetItemData (hChildItem);
			if (dwAudioType == ST_AUDIOSTREAM || dwAudioType == ST_AUDIOPATH)
			{
				bEnableInsertAudio = false;
				break;
			}

			hChildItem = c_Content.GetNextSiblingItem (hChildItem);
		}
	}

	// Enable transition type combobox and insert image button according
	// to the conditions evaluated previously.
	// 
	c_TransitionType.EnableWindow (bEnableTransitionType);
	c_InsertImage.EnableWindow (bEnableInsertImage);
	c_InsertAudio.EnableWindow (bEnableInsertAudio);
	c_InsertAudioStream.EnableWindow (bEnableInsertAudio);
}

void CPageFirst::OnSelchangeTransitionType() 
{
	// When selection changes in the transition type combo box, update the
	// transition type of the item in the treectrl.
	// 
	HTREEITEM hSelectedItem = c_Content.GetSelectedItem ();
	
	if (hSelectedItem != NULL)
	{
		HTREEITEM hItemParent = c_Content.GetParentItem (hSelectedItem);
		if (hItemParent != NULL)
		{
			if (c_Content.GetItemData (hItemParent) == CONTENTTYPE::SLIDESHOW)
			{
				ChangeTransition (hSelectedItem, c_TransitionType.GetCurSel ());
			}
		}
	}
}

void CPageFirst::OnInsertImage() 
{
	// This method inserts an image into the project (tree ctrl) after an
	// initial slideshow has been created with InsertSlideshow.
	// 
	HTREEITEM hSelectedItem = c_Content.GetSelectedItem ();

	if (hSelectedItem != NULL)
	{
		HTREEITEM hParentItem = c_Content.GetParentItem (hSelectedItem);

		if (c_Content.GetItemData (hParentItem != NULL? hParentItem: hSelectedItem) == CONTENTTYPE::SLIDESHOW)
		{
			CString sFilter;
			sFilter.LoadString (IDS_IMAGE_FILES_FILTER);
			CFileDialog dlg (TRUE, NULL, NULL,
				OFN_EXPLORER|OFN_HIDEREADONLY,
				sFilter, this);
			
			if (IDOK == dlg.DoModal ())
			{
				// If an image filename has been chosen, insert it at the
				// end of an existing slideshow.
				// 
				HTREEITEM hSlideItem = hParentItem != NULL? hParentItem: hSelectedItem;
				
				InsertImage (hSlideItem, dlg.GetPathName ());
				InsertTransition (hSlideItem);

				c_Content.Expand (hSlideItem, TVE_EXPAND);
				
				UpdateControls ();
			}
		}
	}
}

_bstr_t CPageFirst::PrettyFormatXML (/*[in]*/ BSTR bstrInputXML)
{
	// This method is used for pretty printing the XML file.
	// 
	try
	{
		ISAXXMLReaderPtr pSAXXReader;
		IMXWriterPtr pMXWriter;
		
		EVAL_HR (pSAXXReader.CreateInstance ("MSXML2.SAXXMLReader.3.0"));
		EVAL_HR (pMXWriter.CreateInstance ("MSXML2.MXXMLWriter.3.0"));
		
		pMXWriter->indent = VARIANT_TRUE;
		pMXWriter->standalone = VARIANT_TRUE;
		
		ISAXContentHandlerPtr pSAXContentHandler (pMXWriter);
		EVAL_HR (pSAXXReader->putContentHandler (pSAXContentHandler));

		EVAL_HR (pSAXXReader->parse (bstrInputXML));
		
		_variant_t varOutput = pMXWriter->output;

		EVAL_HR (varOutput.vt == VT_BSTR? S_OK: E_INVALIDARG);
		_bstr_t bstrRet (varOutput.bstrVal);

		return bstrRet;
	}
	catch (...)
	{
		return "";
	}
}

IXMLDOMDocumentPtr CPageFirst::BuildXML (void)
{
	// This method is used to build an XML from the project.
	// 
	IXMLDOMDocumentPtr pDocument;

	try
	{
		EVAL_HR (pDocument.CreateInstance ("Msxml2.DOMDocument"));
		
		_bstr_t bstrTarget ("xml");
		_bstr_t bstrData ("version='1.0' encoding='ISO-8859-1'");
		IXMLDOMProcessingInstructionPtr pPI;
		pPI = pDocument->createProcessingInstruction (bstrTarget, bstrData);
		pDocument->appendChild (pPI);

		IXMLDOMElementPtr pNeroProjectElement;
		pNeroProjectElement = pDocument->createElement ("nerovision-project");
		pNeroProjectElement->setAttribute ("version", 1L);
		pNeroProjectElement->setAttribute ("xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance");
		pNeroProjectElement->setAttribute ("xsi:noNamespaceSchemaLocation", _variant_t ("NeroVisionAPI.xsd"));
		pDocument->appendChild (pNeroProjectElement);

		// Get the project type string directly from the project type
		// combobox.
		// 
		int iProjectTypeCurSel = c_ProjectType.GetCurSel ();
		ASSERT (iProjectTypeCurSel != -1);
		CString sProjectType;
		c_ProjectType.GetLBText (iProjectTypeCurSel, sProjectType);

		// Insert a project type tag with a fixed PAL encoding.
		// 
		IXMLDOMElementPtr pProjectType;
		pProjectType = pDocument->createElement ((LPCSTR) sProjectType);
		int iEncodingTypeCurSel = c_EncodingType.GetCurSel();
		ASSERT(iEncodingTypeCurSel != -1);
		CString sEncodingType;
		c_EncodingType.GetLBText (iEncodingTypeCurSel, sEncodingType);
		pProjectType->setAttribute ("encoding", (LPCSTR)sEncodingType);
		pNeroProjectElement->appendChild (pProjectType);

		// Insert a hardcoded label.
		// 
		IXMLDOMElementPtr pLabel;
		pLabel = pDocument->createElement ("label");
		pLabel->put_text (_bstr_t ("This is a label!"));
		pProjectType->appendChild (pLabel);

		// Start the content tag...
		// 
		IXMLDOMElementPtr pContent;
		pContent = pDocument->createElement ("content");
		pProjectType->appendChild (pContent);
		
		int ITitleItemID = 1;
		
		for (HTREEITEM hTitle = c_Content.GetChildItem (NULL);
			hTitle != NULL;
			hTitle = c_Content.GetNextSiblingItem (hTitle))
		{
			IXMLDOMElementPtr pTitle;

			switch (c_Content.GetItemData (hTitle))
			{
				case CONTENTTYPE::VIDEOTITLE:
				// This is a video. Add videotitle tag with a name attribute
				// whose value is the tree item caption.
				// 
				{
					
					pTitle = pDocument->createElement ("videotitle");
					pTitle->setAttribute ("name", (LPCSTR) c_Content.GetItemText (hTitle));
					
					CString sID;
					sID.Format ("t%d", ITitleItemID++);
					pTitle->setAttribute ("id", (LPCSTR) sID);
					pContent->appendChild (pTitle);
					
					break;
				}
				case CONTENTTYPE::SLIDESHOW:
				{
					// This is a slide show. Add a slideshow tag with a name
					// attribute whose value is the tree item caption.
					// 
					
					pTitle = pDocument->createElement ("slideshow");
					pTitle->setAttribute ("name", (LPCSTR) c_Content.GetItemText (hTitle));
					
					CString sID;
					sID.Format ("t%d", ITitleItemID++);
					pTitle->setAttribute ("id", (LPCSTR) sID);
					pContent->appendChild (pTitle);
					
					break;
				}
			}

			// Now, iterate the children and add transitions and images.
			// 
			for (HTREEITEM hChild = c_Content.GetChildItem (hTitle);
				hChild != NULL;
				hChild = c_Content.GetNextSiblingItem (hChild))
			{
				SUBITEMTYPE vt = (SUBITEMTYPE) c_Content.GetItemData (hChild);
				switch (vt)
				{
					case SUBITEMTYPE::ST_VIDEOPATH:
					{
						IXMLDOMElementPtr pVideo;
						
						pVideo = pDocument->createElement ("video");
						pVideo->setAttribute ("src", (LPCSTR) c_Content.GetItemText (hChild));
						pTitle->appendChild (pVideo);
						break;
					}

					case SUBITEMTYPE::ST_AUDIOPATH:
					{
						IXMLDOMElementPtr pAudio;
						
						pAudio = pDocument->createElement ("audio");
						pAudio->setAttribute ("src", (LPCSTR) c_Content.GetItemText (hChild));
						pTitle->appendChild (pAudio);
						break;
					}

					case SUBITEMTYPE::ST_VIDEOSTREAM:
					{
						// This is a video stream. Add a video stream tag with a name
						// attribute whose value is the tree item caption.
						
						IXMLDOMElementPtr pVideoStream;
						pVideoStream = pDocument->createElement ("video");
						CString videoStreamName;
						videoStreamName.Format("content-id:V:%s", c_Content.GetItemText (hChild));
						pVideoStream->setAttribute ("src", (LPCSTR) videoStreamName);
						pVideoStream->setAttribute ("start", "0");
						pVideoStream->setAttribute ("duration", "10");
						CString sVideoID;
						sVideoID.Format("v%d", ITitleItemID);
						pVideoStream->setAttribute ("id", (LPCSTR) sVideoID);
						pTitle->appendChild (pVideoStream);
						
						break;
					}

					case SUBITEMTYPE::ST_AUDIOSTREAM:
					{
						IXMLDOMElementPtr pAudioStream;
						
						pAudioStream = pDocument->createElement ("audio");
						CString sAudioStreamName;
						sAudioStreamName.Format("content-id:A:%s", c_Content.GetItemText (hChild));
						pAudioStream->setAttribute ("src", (LPCSTR) sAudioStreamName);
						pAudioStream->setAttribute ("start", "0");
						pAudioStream->setAttribute ("duration", "10");

						CString sAudioID;
						sAudioID.Format("a%d", ITitleItemID);

						pAudioStream->setAttribute ("id", (LPCSTR) sAudioID);
						pTitle->appendChild (pAudioStream);
						break;
					}

					case SUBITEMTYPE::ST_IMAGEPATH:
					{
						// This is an image path.
						// 
						IXMLDOMElementPtr pImage;
						
						pImage = pDocument->createElement ("image");
						pImage->setAttribute ("src", (LPCSTR) c_Content.GetItemText (hChild));
						pImage->setAttribute ("duration", "5");
						pTitle->appendChild (pImage);
						break;
					}

					default:
					{
						if (IsTransition (vt) && vt != SUBITEMTYPE::ST_NONEEFFECT)
						{
							_bstr_t* sTransitionName = (_bstr_t*)c_TransitionType.GetItemData(vt);
							IXMLDOMElementPtr pTransition;
							pTransition = pDocument->createElement ("transition");
							pTransition->setAttribute ("type", (LPCSTR) *sTransitionName);
							pTitle->appendChild (pTransition);
						}

						break;
					}
				}
			}
		}
		
		IXMLDOMElementPtr pMenu;
		pMenu = pDocument->createElement ("menu");
		pMenu->setAttribute ("default-thumbnail", "FirstNonEmptyFrame");
		pProjectType->appendChild (pMenu);

		IXMLDOMElementPtr pDefaultTemplate;
		pDefaultTemplate = pDocument->createElement ("default-template");
		pDefaultTemplate->setAttribute ("id", "templ1");
		pDefaultTemplate->setAttribute ("name", "Island");
		pMenu->appendChild (pDefaultTemplate);

		IXMLDOMElementPtr pMainMenu;
		pMainMenu = pDocument->createElement ("main-menu");
		pMenu->appendChild (pMainMenu);

		for (int i = 1; i < ITitleItemID; i ++)
		{
			IXMLDOMElementPtr pChapterMenu;
			pChapterMenu = pDocument->createElement ("chapter-menu");

			CString sID;
			sID.Format ("t%d", i);
			pChapterMenu->setAttribute ("title-id", (LPCSTR) sID);
			pMenu->appendChild (pChapterMenu);
		}
	}
	catch (...)
	{
		// If an exception is caught, release the unfinished document.
		// 
		pDocument = NULL;
	}

	return pDocument;
}

void CPageFirst::OnBeginlabeleditContent(NMHDR* pNMHDR, LRESULT* pResult) 
{
	TV_DISPINFO* pTVDispInfo = (TV_DISPINFO*)pNMHDR;

	// Allow label editing on the first level only! This means editing is
	// allowed for video and slideshow item names only. Return TRUE to
	// disable editing.
	// 
	*pResult = c_Content.GetParentItem (pTVDispInfo->item.hItem) != NULL;
}

void CPageFirst::ParseXMLDocument (const IXMLDOMDocumentPtr pDocument)
{
	// First, clear the treectrl.
	// 
	c_Content.DeleteAllItems ();

	// Loop through all the nodes, look for elements.
	// 
	for (IXMLDOMNodePtr pNode = pDocument->firstChild;
		pNode != NULL;
		pNode = pNode->nextSibling)
	{
		IXMLDOMElementPtr pElement (pNode);
		
		// If node is an element, the interface pointer will be non-NULL.
		// 
		if (pElement != NULL)
		{
			// Check to see if the tag name is what we are looking for.
			// 
			if (0 == wcscmp ((BSTR) pElement->tagName, L"nerovision-project"))
			{
				ParseNeroVisionProject (pElement);
				
				// Once the project tag is parsed, we need parse no more.
				// 
				break;
			}
		}
	}
}

void CPageFirst::ParseNeroVisionProject (const IXMLDOMElementPtr pProject)
{
	// Ok, we are now looking for the project type (vcd, svcd or dvd).
	// 
	for (IXMLDOMNodePtr pNode = pProject->firstChild;
		pNode != NULL;
		pNode = pNode->nextSibling)
	{
		IXMLDOMElementPtr pElement (pNode);

		if (pElement != NULL)
		{
			USES_CONVERSION;

			_bstr_t tagName = pElement->tagName;
			LPCSTR psTagName = W2CA (tagName);

			// Instead of hardcoding the strings, we will now see if the
			// tag name matches any of the strings in the project type
			// combobox. We could use CComboBox::FindString but this
			// method uses case insensitive search and we need it to be
			// case sensitive.
			// 
			for (int i = c_ProjectType.GetCount () - 1; i >= 0; i --)
			{
				CString sProjectType;
				c_ProjectType.GetLBText (i, sProjectType);

				if (0 == strcmp (psTagName, sProjectType))
				{
					c_ProjectType.SetCurSel (i);
					break;
				}
			}

			// Make sure the appropriate project type was found!
			// 
			EVAL_HR (i >= 0? S_OK: E_FAIL);

			// match the encoding type string in the combobox
			IXMLDOMAttributePtr pAttribute = pElement->getAttributeNode ("encoding");
			_bstr_t attribute = pAttribute->value;
			LPCSTR sEncodingType = W2CA (attribute);
			for (i = c_EncodingType.GetCount () - 1; i >= 0; i --)
			{
				CString sEncodingType;
				c_EncodingType.GetLBText (i, sEncodingType);

				if (0 == strcmp (attribute, sEncodingType))
				{
					c_EncodingType.SetCurSel (i);
					break;
				}

			}
			// Make sure the appropriate encoding type was found!
			// 
			EVAL_HR (i >= 0? S_OK: E_FAIL);


			// If the subproject tag was found, parse its inner tags.
			// 
			ParseSubproject (pElement);

			// Then break as only one subproject is supported.
			// 
			break;
		}
	}
}

void CPageFirst::ParseSubproject (const IXMLDOMElementPtr pSubProject)
{
	// Now we are looking for the label and content tags. Actually, we
	// don't care about the label as we don't have facility to neither
	// display nor modify it. So, content tag is all we want. We also
	// don't care about the encoding attribute as we don't use it. It is
	// always PAL.
	// 
	for (IXMLDOMNodePtr pNode = pSubProject->firstChild;
		pNode != NULL;
		pNode = pNode->nextSibling)
	{
		IXMLDOMElementPtr pElement (pNode);
		
		if (pElement != NULL)
		{
			if (0 == wcscmp ((BSTR) pElement->tagName, L"content"))
			{
				// Once the content tag is found, parse it, then break as
				// only one content tag is allowed.
				// 
				ParseContent (pElement);
				
				break;
			}
		}
	}
}

void CPageFirst::ParseContent (const IXMLDOMElementPtr pContent)
{
	// Here we want videotitle and slideshow tags. Any number of these
	// can appear in any order.
	// 
	for (IXMLDOMNodePtr pNode = pContent->firstChild;
		pNode != NULL;
		pNode = pNode->nextSibling)
	{
			IXMLDOMElementPtr pElement (pNode);
			
			if (pElement != NULL)
			{
				if (0 == wcscmp ((BSTR) pElement->tagName, L"videotitle"))
				{
					ParseVideotitle (pElement);
				}
				else if (0 == wcscmp ((BSTR) pElement->tagName, L"slideshow"))
				{
					ParseSlideshow (pElement);
				}
			}
		}
}

void CPageFirst::ParseVideotitle (const IXMLDOMElementPtr pVideotitle)
{
	// Videotitle has a mandatory attribute "name". That is what we are
	// after. A sub-tag "video" is also of interest to us.
	// 
	IXMLDOMAttributePtr pNameAttr = pVideotitle->attributes->getNamedItem ("name");
	if (pNameAttr != NULL)
	{
		HTREEITEM hVideoItem = NULL;

		// Look for video tag.
		// 
		for (IXMLDOMNodePtr pNode = pVideotitle->firstChild;
			pNode != NULL;
			pNode = pNode->nextSibling)
		{
			IXMLDOMElementPtr pElement (pNode);
			
			if (pElement != NULL)
			{
				if (0 == wcscmp ((BSTR) pElement->tagName, L"video"))
				{
					if (hVideoItem != NULL)
					{
						// There can be only one video tag per videotitle.
						// 
						throw E_FAIL;
					}

					// Video tag is found. Take its "src" attribute.
					// 
					IXMLDOMAttributePtr pSrcAttr = pElement->attributes->getNamedItem ("src");
					if (pSrcAttr != NULL)
					{
						// Once we have both name and src attributes,
						// insert the video to the project.
						// 
						USES_CONVERSION;
						_bstr_t bstrName (pNameAttr->value);
						_bstr_t bstrPath (pSrcAttr->value);

						CString sName = pSrcAttr->value.bstrVal;
						CString matchString = "content-id:V:";
						if (sName.Left(matchString.GetLength()) == matchString)
						{
							sName = sName.Right(sName.GetLength() - matchString.GetLength());
							hVideoItem = InsertVideoStream (W2CA (bstrName), sName);	
						}
						else
						{

							hVideoItem = InsertVideo (W2CA (bstrName), W2CA (bstrPath));
						}
					}
				}
				else if (0 == wcscmp ((BSTR) pElement->tagName, L"audio"))
				{
					if (hVideoItem == NULL)
					{
						// There must be a video tag before audio.
						// 
						throw E_FAIL;
					}

					// Audio tag is found. Take its "src" attribute.
					// 
					IXMLDOMAttributePtr pSrcAttr = pElement->attributes->getNamedItem ("src");
					if (pSrcAttr != NULL)
					{
						// Once we have both name and src attributes,
						// insert the video to the project.
						// 
						USES_CONVERSION;
						_bstr_t bstrPath (pSrcAttr->value);
						
						CString sName = pSrcAttr->value.bstrVal;
						CString matchString = "content-id:A:";
						if (IsAudioStream(sName))
						{
							sName = sName.Right(sName.GetLength() - matchString.GetLength());
							InsertAudioStream (hVideoItem, sName);	
						}
						else
						{

							InsertAudio (hVideoItem, W2CA (bstrPath));
						}


						// Nothing more should follow after an audio tag
						// (if any) so we can break here.
						// 
						break;
					}
				}
			}
		}
	}
}

void CPageFirst::ParseSlideshow (const IXMLDOMElementPtr pSlideshow)
{
	// Slideshow has a mandatory attribute "name".
	// 
	IXMLDOMAttributePtr pNameAttr = pSlideshow->attributes->getNamedItem ("name");
	if (pNameAttr != NULL)
	{
		// If "name" attribute is found, let's insert a slideshow into the/
		// project.
		// 
		USES_CONVERSION;
		_bstr_t bstrName = pNameAttr->value;
		HTREEITEM hSlideItem = InsertSlideshow (W2CA (bstrName));

		// Look for transition and image tags.
		// 
		for (IXMLDOMNodePtr pNode = pSlideshow->firstChild;
			pNode != NULL;
			pNode = pNode->nextSibling)
		{
			IXMLDOMElementPtr pElement (pNode);
			
			if (pElement != NULL)
			{
				if (0 == wcscmp ((BSTR) pElement->tagName, L"transition"))
				{
					// A transition tag must have a "type" attribute.
					// 
					IXMLDOMAttributePtr pTypeAttr = pElement->attributes->getNamedItem ("type");
					if (pTypeAttr != NULL)
					{
						_bstr_t bstrTransitionType (pTypeAttr->value);

						// Instead of hardcoding the strings, we will now see if the
						// type attribute matches any of the strings in the transition type
						// combobox.
						// 
						for (int i = c_TransitionType.GetCount () - 1; i >= 0; i --)
						{
							_bstr_t* sTransitionName = (_bstr_t*)c_TransitionType.GetItemData(i);
							
							if (0 == strcmp (bstrTransitionType, *sTransitionName))
							{
								// Once the transition type was found in
								// the combobox, insert it into the
								// project.
								// 
								InsertTransition (hSlideItem, i);
								break;
							}
						}
						
						// Make sure the appropriate transition type was
						// found!
						// 
						EVAL_HR (i >= 0? S_OK: E_FAIL);
					}
				}
				else if (0 == wcscmp ((BSTR) pElement->tagName, L"image"))
				{
					// When image tag is found, look for its "src"
					// attribute.
					// 
					IXMLDOMAttributePtr pSrcAttr = pElement->attributes->getNamedItem ("src");
					if (pSrcAttr != NULL)
					{
						// When found, insert the image into the project.
						// 
						_bstr_t bstrImagePath (pSrcAttr->value);
						
						InsertImage (hSlideItem, W2CA (bstrImagePath));
					}
				}
				else if (0 == wcscmp ((BSTR) pElement->tagName, L"audio"))
				{
					// Audio tag is found. Take its "src" attribute.
					// 
					IXMLDOMAttributePtr pSrcAttr = pElement->attributes->getNamedItem ("src");
					if (pSrcAttr != NULL)
					{
						// Once we have both name and src attributes,
						// insert the video to the project.
						// 
						USES_CONVERSION;
						_bstr_t bstrPath (pSrcAttr->value);
						
						CString sName = W2CA(bstrPath);
						CString matchString = "content-id:A:";
						if (IsAudioStream(sName))
						{
							sName = sName.Right(sName.GetLength() - matchString.GetLength());
							InsertAudioStream (hSlideItem, sName);	
						}
						else
							InsertAudio (hSlideItem, W2CA (bstrPath));
						
						// Nothing more should follow after an audio tag
						// (if any) so we can break here.
						// 
						break;
					}
				}
			}
			}
			
			// When all is parsed, expand the tree item.
			// 
			c_Content.Expand (hSlideItem, TVE_EXPAND);
	}
}


void CPageFirst::OnInsertAudio() 
{
	// This is a handler to insert an audio file to project.
	// 
	HTREEITEM hSelectedItem = c_Content.GetSelectedItem ();
	
	if (hSelectedItem != NULL)
	{
		CString sFilter;
		sFilter.LoadString (IDS_AUDIO_FILES_FILTER);
		CFileDialog dlg (TRUE, NULL, NULL,
						OFN_EXPLORER|OFN_HIDEREADONLY,
						sFilter, this);
		
		if (IDOK == dlg.DoModal ())
		{
			// Find the root item of the selected item.
			// 
			HTREEITEM hParentItem = c_Content.GetParentItem (hSelectedItem);
			if (hParentItem == NULL)
			{
				hParentItem = hSelectedItem;
			}

			InsertAudio (hParentItem, dlg.GetPathName ());
			
			// After insertion, update the controls.
			// 
			UpdateControls ();
		}
	}
}

void CPageFirst::OnLoadAndBurn() 
{
	// This is a Load handler. Ask for a file to load.
	// 
	CString sFilter;
	sFilter.LoadString (IDS_XML_FILES_FILTER);
	CFileDialog dlg (TRUE, "xml", NULL,
		OFN_EXPLORER|OFN_HIDEREADONLY,
		sFilter, this);
	
	if (IDOK == dlg.DoModal ())
	{
		// If ok was clicked, create an instance of XML document and
		// load the document. If loaded successfully go directly to
		// burning.
		// 
		try
		{
			try
			{
				IXMLDOMDocumentPtr pDocument;
				
				// Create object instance... Try MSXML 4.0 first, if not
				// then 3.0. Version independent PROGID loads 3.0 even if
				// 4.0 is installed. We want 4.0 because it supports schema
				// validation.
				// 
				if (FAILED (pDocument.CreateInstance ("Msxml2.DOMDocument.4.0")))
				{
					EVAL_HR (pDocument.CreateInstance ("Msxml2.DOMDocument.3.0"));
				}
				
				// Load the document...
				// 
				VARIANT_BOOL bSuccess;
				bSuccess = pDocument->load ((LPCSTR) dlg.GetPathName ());
				if (bSuccess)
				{
					USES_CONVERSION;
					GetPageData ()->m_sXML = W2CA (pDocument->xml);

					m_bLoadAndBurn = true;
					GetParent ()->SendMessage (WM_COMMAND, IDOK);
					m_bLoadAndBurn = false;
				}
				else
				{
					IXMLDOMParseErrorPtr pParseError = pDocument->parseError;
					
					CString str, sFormat;
					USES_CONVERSION;
					VERIFY (sFormat.LoadString (IDS_XML_PARSE_ERROR));
					str.Format (sFormat,
						pParseError->errorCode, pParseError->line, pParseError->linepos,
						W2CA (pParseError->reason), W2CA (pParseError->srcText));
					AfxMessageBox (str);
				}
			}
			catch (HRESULT hr)
			{
				throw _com_error (hr);
			}
		}
		catch (_com_error e)
		{
			CString str;
			VERIFY (str.LoadString (IDS_ERROR_LOADING_XML));
			
			CString sMessage;
			sMessage.Format ("%s (%s)", str, e.ErrorMessage ());
			AfxMessageBox (sMessage);
		}
		catch (...)
		{
			// If an error occurs, delete everything and display an error.
			// 
			AfxMessageBox (IDS_ERROR_LOADING_XML);
		}
	}
}


void CPageFirst::OnPreview() 
{
	// build XML before preview, so any change user made will be show on preview page
	IXMLDOMDocumentPtr pDocument = BuildXML ();
	USES_CONVERSION;
	GetPageData ()->m_sXML = W2CA (pDocument->xml);

	// go to preview page
	CNVAPIExampleDlg * pParentSheet = (CNVAPIExampleDlg *) GetParent();
	if (pParentSheet)
		pParentSheet->SwitchPage(3);
}

void CPageFirst::OnExport() 
{
	// make sure one title is selected for export 
	HTREEITEM hSelectedItem = c_Content.GetSelectedItem ();
	if (hSelectedItem != NULL)		// Find the root item of the selected item.
	{
		for (HTREEITEM hParentItem = hSelectedItem; hParentItem != NULL;
			hSelectedItem = hParentItem, hParentItem = c_Content.GetParentItem (hSelectedItem));
		int index = 0;
		for (HTREEITEM hChild = c_Content.GetChildItem (NULL) ; hChild != NULL;
		hChild = c_Content.GetNextSiblingItem (hChild), ++index)
		{
			if (hSelectedItem == hChild)	{
				GetPageData ()->m_selectedItemIndex = index;
				break;
			}
		}


		// build XML before export
		IXMLDOMDocumentPtr pDocument = BuildXML ();
		USES_CONVERSION;
		GetPageData ()->m_sXML = W2CA (pDocument->xml);

		// go to export page
		CNVAPIExampleDlg * pParentSheet = (CNVAPIExampleDlg *) GetParent();
		if (pParentSheet)
			pParentSheet->SwitchPage(4);
	}
}

void CPageFirst::OnRemoveall() 
{
	// for fast restart a project
	c_Content.DeleteAllItems ();
	UpdateControls ();
}

bool CPageFirst::IsAudioStream(LPCSTR psAudioPath)
{
	CString sName		= psAudioPath;
	CString matchString = "content-id:A:";
	
	return (sName.Left(matchString.GetLength()) == matchString);
}

bool IsVideoStream(LPCSTR psVideoPath)
{
	bool bResult = false;
	return bResult;
}