myplayerdlg.cpp

经典C++书籍钱能C++书籍例子代码实例

// MyPlayerDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MyPlayer.h"
#include "MyPlayerDlg.h"
#include "mmsystem.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()

/////////////////////////////////////////////////////////////////////////////
// CMyPlayerDlg dialog

CMyPlayerDlg::CMyPlayerDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CMyPlayerDlg::IDD, pParent)
{//	m_radio = 0;
	//{{AFX_DATA_INIT(CMyPlayerDlg)
	m_radio = 0;
	m_dight = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CMyPlayerDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMyPlayerDlg)
	DDX_Control(pDX, IDC_SLIDER, m_Slider);
	DDX_Control(pDX, IDC_PROGRESS, m_Progress);
	DDX_Radio(pDX, IDC_RADIO_WAVE, m_radio);
	DDX_Text(pDX, IDC_EDIT_DIGHT, m_dight);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMyPlayerDlg, CDialog)
	//{{AFX_MSG_MAP(CMyPlayerDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_OPEN, OnButtonOpen)
	ON_BN_CLICKED(IDC_BUTTON_PLAY, OnButtonPlay)
	ON_BN_CLICKED(IDC_BUTTON_STOP, OnButtonStop)
	ON_WM_TIMER()
	ON_WM_HSCROLL()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMyPlayerDlg message handlers

BOOL CMyPlayerDlg::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
	
	// TODO: Add extra initialization here
	CString s;
	s.LoadString(IDS_TITLE);
	SetWindowText(s);

    GetDlgItem(IDC_BUTTON_OPEN)->EnableWindow(true);
    GetDlgItem(IDC_BUTTON_PLAY)->EnableWindow(FALSE);
	GetDlgItem(IDC_BUTTON_STOP)->EnableWindow(FALSE);
	 
	
	m_Progress.SetRange(0,100);// 进程条的范围
	m_Progress.ShowWindow(SW_HIDE);// 隐藏进程条

    m_Slider.SetRange(0,20);// 进程条的范围
	m_Slider.ShowWindow(SW_HIDE);// 隐藏进程条
	SetTimer(100,500,NULL); //设置定时器


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

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

void CMyPlayerDlg::OnButtonOpen() 
{
	CString strFilter;
	UpdateData(true);
	switch (m_radio)
	{
		case 0: strFilter = "Wave Files (*.wav)|*.wav|All Files (*.*)|*.*||";
				   break;
		case 1: strFilter = "Midi Files (*.mid)|*.mid|All Files (*.*)|*.*||";
				   break;
		case 2:  strFilter = "AVI Files (*.avi)|*.avi|All Files (*.*)|*.*||";
				   break;
	}
	CFileDialog FileDlg(true, NULL, NULL, 
					   OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,
					   (LPCSTR)strFilter, this);
	if (FileDlg.DoModal() == IDOK)
	{
		CString strFileName = FileDlg.GetPathName();
		char szFileName[_MAX_PATH];
		GetShortPathName((LPCSTR)strFileName, szFileName, _MAX_PATH);
		char szExt[8];
		 _splitpath((const char *)szFileName, NULL, NULL, NULL, szExt);

		// keep the open result
		MCIERROR mciError = 0;
		if (!stricmp(szExt, ".wav"))
			mciError = Open(szFileName, "waveaudio", "", m_hWnd);
		else if (!stricmp(szExt, ".mid"))
		 	mciError = Open(szFileName, "sequencer", "", m_hWnd);
		
		else if (!stricmp(szExt, ".avi"))
			mciError = Open(szFileName, "avivideo", "overlapped", m_hWnd);
		

		// our default time format is ms
		if (mciError == 0)
		{
			SetTimeFormat("ms");
			m_Progress.SetPos(0);
		}

		// set new title
		CString s;	  
		s.LoadString(IDS_TITLE);
		s += " - ";
		s += FileDlg.GetFileName();
		SetWindowText(s);
	}

}

void CMyPlayerDlg::OnButtonPlay() 
{ 	
	m_Progress.ShowWindow(SW_SHOW);// 显示进程条
	m_Slider.ShowWindow(SW_SHOW);// 显示进程条
	GetDlgItem(IDC_BUTTON_STOP)->EnableWindow(true);
	GetDlgItem(IDC_BUTTON_PLAY)->EnableWindow(false);

	Play();
}

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

void CMyPlayerDlg::OnTimer(UINT nIDEvent) 
{
	CString strMode=GetMode();
	if(strMode.CompareNoCase("not open"))
	{
		if(IsMediumPresent())
		{
			if(!strMode.CompareNoCase("stopped")) 
			 
				{
				GetDlgItem(IDC_BUTTON_PLAY)->EnableWindow(TRUE);
				GetDlgItem(IDC_BUTTON_STOP)->EnableWindow(FALSE);	
				}
			else if(!strMode.CompareNoCase("not ready"))
		 	{	
				 GetDlgItem(IDC_BUTTON_PLAY)->EnableWindow(FALSE);
				 GetDlgItem(IDC_BUTTON_STOP)->EnableWindow(FALSE);	
			}
			char szPos[256];
		    m_Slider.SetPos((int)(20*GetPosition(szPos)/GetLength()));
			m_Progress.SetPos((int)(100*GetPosition(szPos)/GetLength()));
	        m_dight = itoa((100*GetPosition(szPos)/GetLength()),szPos,10);
		 	m_dight += "%";
		    UpdateData(false);
		}
	else
		{
		GetDlgItem(IDC_BUTTON_PLAY)->EnableWindow(FALSE);
		GetDlgItem(IDC_BUTTON_STOP)->EnableWindow(FALSE);	
	
		}
	}

	CDialog::OnTimer(nIDEvent);
}

void CMyPlayerDlg::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) 
{
	// TODO: Add your message handler code here and/or call default
	//get medium mode, if playing, stop 
	CString strMode = GetMode();
	if (!strMode.CompareNoCase("playing"))
		Stop();
	// get current pos and seek it in medium
	int  nSPos = m_Slider.GetPos();
	LONG lLength = GetLength();
	LONG lMPos = (LONG)((double)nSPos*lLength/20);
		
	//SetAudioVolume(lMPos);

	// normalize pos
	char szStartPos[256];
	lMPos = max(GetStartPosition(szStartPos), lMPos);
	lMPos = min(lLength, lMPos);

	// seek to lMPos
	
	Seek(lMPos);
	// if playing, play from lMPos
	if (!strMode.CompareNoCase("playing"))
		Play();

	CDialog::OnHScroll(nSBCode, nPos, pScrollBar);
}