descallbackdlg.cpp

简单的COM 实际例子 用法3

// DESCallbackDlg.cpp : implementation file
//

#include "stdafx.h"
#include "DESCallback.h"
#include "DESCallbackDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CDESCallbackDlg dialog

CDESCallbackDlg::CDESCallbackDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CDESCallbackDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CDESCallbackDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

	mCBController.AddRef();
}

void CDESCallbackDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CDESCallbackDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CDESCallbackDlg, CDialog)
	//{{AFX_MSG_MAP(CDESCallbackDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_RENDERFILE, OnButtonRenderfile)
	ON_BN_CLICKED(IDC_BUTTON_RUN, OnButtonRun)
	ON_BN_CLICKED(IDC_BUTTON_STOP, OnButtonStop)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDESCallbackDlg message handlers

BOOL CDESCallbackDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CDESCallbackDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CDESCallbackDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CDESCallbackDlg::OnButtonRenderfile() 
{
	// TODO: Add your control notification handler code here
//	mFilePath = "F:\\beatle.mpeg";
//	mFilePath = "F:\\SampleMpeg2.mpg";
//	mFilePath = "F:\\IKeaMpg2.mpg";	
//	mFilePath = "F:\\aviDemo.AVI";
//	mFilePath = "F:\\dieke.mp3";
//	mFilePath = "F:\\test\\NorwayForest.ac3";
//	mFilePath = "F:\\swimming.mov";
//	mFilePath = "F:\\Test\\DV\\Ocean2.dv";
//	mFilePath = "F:\\beatle.asf";

	CString   strFilter = "All File (*.*)|*.*|";
	CFileDialog   dlgOpen(TRUE, NULL, NULL, OFN_HIDEREADONLY, strFilter, NULL);
	if (IDOK != dlgOpen.DoModal()) 
	{
		return;
	}
	mFilePath = dlgOpen.GetPathName();
	

	mFilterGraph.Stop();
	mFilterGraph.Release();
	if (mFilterGraph.Create())
	{
		IObjectWithSite * pSite = NULL;
		HRESULT hr = mFilterGraph.GetGraph()->QueryInterface(IID_IObjectWithSite, (void **)&pSite);
		if (pSite)
		{
			pSite->SetSite((IUnknown*) &mCBController);
		}
		mFilterGraph.RenderFile(mFilePath);
		if (pSite)
		{
			pSite->SetSite(NULL);
			pSite->Release();
		}
	}
}

void CDESCallbackDlg::OnButtonRun() 
{
	// TODO: Add your control notification handler code here
	mFilterGraph.Run();
}

void CDESCallbackDlg::OnButtonStop() 
{
	// TODO: Add your control notification handler code here
	mFilterGraph.Stop();
}