callbackdesigenddlg.cpp

来自「《Visual C++视频技术方案宝典》配套光盘」· C++ 代码 · 共 216 行

// CallbackDesigendDlg.cpp : implementation file
//

#include "stdafx.h"
#include "CallbackDesigend.h"
#include "CallbackDesigendDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

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()

/////////////////////////////////////////////////////////////////////////////
// CCallbackDesigendDlg dialog

CCallbackDesigendDlg::CCallbackDesigendDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CCallbackDesigendDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CCallbackDesigendDlg)
		// 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(IDI_ICON1);
}

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

BEGIN_MESSAGE_MAP(CCallbackDesigendDlg, CDialog)
	//{{AFX_MSG_MAP(CCallbackDesigendDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCallbackDesigendDlg message handlers

long num = 0;
LRESULT CALLBACK  PreviewCallback (HWND hWnd)
{
	num++;
	return 0;
}


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

	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);
		}
	}

	SetIcon(m_hIcon, TRUE);	
	SetIcon(m_hIcon, FALSE);
	
	//创建预览窗口
	m_hWndVideo = capCreateCaptureWindow(NULL,WS_POPUP,1,1,10,10,m_hWnd,0);
	//连接驱动程序
	if (capDriverConnect(m_hWndVideo,0))
	{	
		::SetParent(m_hWndVideo,*this);
		::SetWindowLong(m_hWndVideo,GWL_STYLE,WS_CHILD);

		CRect wndRC;
		m_Panel.GetClientRect(wndRC);
		m_Panel.MapWindowPoints(this,wndRC);
		wndRC.DeflateRect(1,1,1,1);

		::SetWindowPos(m_hWndVideo,NULL,wndRC.left,
		wndRC.top,wndRC.Width(),wndRC.Height(),SWP_NOZORDER);
		::ShowWindow(m_hWndVideo,SW_SHOW);
		capSetCallbackOnFrame(m_hWndVideo,PreviewCallback);
		capPreviewRate(m_hWndVideo,30);
		capPreview(m_hWndVideo,TRUE);
	}	
	
	SetTimer(1,800,NULL);
	return TRUE; 
}

void CCallbackDesigendDlg::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 CCallbackDesigendDlg::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 CCallbackDesigendDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CCallbackDesigendDlg::OnCancel() 
{
	//断开驱动程序连接
	capDriverDisconnect(m_hWndVideo);
	CDialog::OnCancel();
}

void CCallbackDesigendDlg::OnOK() 
{

}

void CCallbackDesigendDlg::OnTimer(UINT nIDEvent) 
{
	CString str;
	str.Format("%i",num);
	m_FrameNum.SetWindowText(str);
	CDialog::OnTimer(nIDEvent);
}