notifyeventdlg.cpp

《Visual C++视频技术方案宝典》配套光盘

// NotifyEventDlg.cpp : implementation file
//

#include "stdafx.h"
#include "NotifyEvent.h"
#include "NotifyEventDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
#define CM_NOTIFY WM_USER+1

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CNotifyEventDlg dialog

CNotifyEventDlg::CNotifyEventDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CNotifyEventDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CNotifyEventDlg)
		// 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);
}

void CNotifyEventDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CNotifyEventDlg)
	DDX_Control(pDX, IDC_PANEL, m_Panel);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CNotifyEventDlg, CDialog)
	//{{AFX_MSG_MAP(CNotifyEventDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_ChOOSE, OnChooSE)
	ON_MESSAGE(CM_NOTIFY,OnGraphNotify)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CNotifyEventDlg message handlers

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

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// 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
	
	m_Previewed = FALSE;

	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CNotifyEventDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// 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 CNotifyEventDlg::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 CNotifyEventDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CNotifyEventDlg::OnOK() 
{

}

void CNotifyEventDlg::OnCancel() 
{
	
	CDialog::OnCancel();
}

void CNotifyEventDlg::OnChooSE() 
{
	CFileDialog fDlg(TRUE,NULL,NULL,OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT,"avi文件|*.avi");
	if (fDlg.DoModal()==IDOK)
	{
		CString strFile= fDlg.GetPathName();
	
		ICaptureGraphBuilder2 * pBuilder = NULL;
		pGraph = NULL;
		pMediaControl = NULL;

		CoCreateInstance(CLSID_CaptureGraphBuilder2,0,CLSCTX_INPROC_SERVER,IID_ICaptureGraphBuilder2,(void**)&pBuilder);
		CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER, 
							IID_IGraphBuilder, (void **)&pGraph);

		pBuilder->SetFiltergraph(pGraph);
		pGraph->QueryInterface(IID_IMediaControl,(void**)&pMediaControl);

		pGraph->RenderFile(strFile.AllocSysString(),NULL);

		//获取预览窗口
		pViewWnd= NULL;
		pGraph->QueryInterface(IID_IVideoWindow,(void**)&pViewWnd);
		
		if (pViewWnd)
		{
			//设置预览窗口的拥有者
			pViewWnd->put_Owner((long)m_Panel. m_hWnd);
			pViewWnd->put_Left(1);
			pViewWnd->put_Top(1);

			//获取预览窗口风格
			long style;
			pViewWnd->get_WindowStyle(&style);
			style = style & ~WS_CAPTION;
			style = style & ~WS_DLGFRAME;
			style = style & WS_CHILD;
			pViewWnd->put_WindowStyle(style);

			//设置预览窗口宽度和高度
			CRect rc;
			m_Panel.GetClientRect(rc);
			pViewWnd->put_Height(rc.Height());
			pViewWnd->put_Width(rc.Width());
		}
		pGraph->QueryInterface(IID_IMediaEventEx, (void **)&pEvent);
		pEvent->SetNotifyWindow((OAHWND)m_hWnd,CM_NOTIFY,0);
		pMediaControl->Run();
		m_Previewed = TRUE;
	}
}

void CNotifyEventDlg::OnGraphNotify(WPARAM wParam, LPARAM lParam)
{
	if (pEvent)
	{
		LONG eventcode = 0,param1 =0,param2 = 0;
		while (SUCCEEDED(pEvent->GetEvent(&eventcode,&param1,&param2,0)))
		{
			pEvent->FreeEventParams(eventcode,param1,param2);
			switch (eventcode)
			{
			case EC_COMPLETE:
				{
					m_Previewed = FALSE;
					pMediaControl->Stop();
					pMediaControl->Release();
					pGraph->Release();
					pViewWnd->put_Visible(FALSE);
					MessageBox("预览完成","提示");
					m_Panel.ShowWindow(SW_HIDE);
					m_Panel.ShowWindow(SW_SHOW);

					break;
				}
			}
		}
	}
}