midipl~1.cpp

visual c++ 时尚编程百例 全部源代码

// MIDI PlayerDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MIDI Player.h"
#include "MIDI PlayerDlg.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()

/////////////////////////////////////////////////////////////////////////////
// CMIDIPlayerDlg dialog

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

void CMIDIPlayerDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMIDIPlayerDlg)
	DDX_Control(pDX, IDC_SLIDER1, m_ctrlTempo);
	DDX_Control(pDX, IDC_STOP, m_strlStop);
	DDX_Control(pDX, IDC_PLAY, m_ctrlPlay);
	DDX_Control(pDX, IDC_PAUSE, m_ctrlPause);
	DDX_Text(pDX, IDC_EDIT_TIME, m_time);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMIDIPlayerDlg, CDialog)
	//{{AFX_MSG_MAP(CMIDIPlayerDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_PAUSE, OnPause)
	ON_BN_CLICKED(IDC_PLAY, OnPlay)
	ON_BN_CLICKED(IDC_STOP, OnStop)
	ON_BN_CLICKED(IDC_OPEN, OnOpen)
	ON_WM_TIMER()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMIDIPlayerDlg message handlers

BOOL CMIDIPlayerDlg::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_strlStop.EnableWindow(FALSE);
	m_ctrlPause.EnableWindow(FALSE);
	int m_nTempo;
	m_ctrlTempo.SetRange(0,500);
	m_nTempo=m_midi.GetTempo();
	m_ctrlTempo.SetPos(m_nTempo);
	SetTimer(1,500,NULL);
	UpdateData(FALSE);


	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

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

void CMIDIPlayerDlg::OnPause() 
{
	m_midi.Pause();
	m_ctrlPause.EnableWindow(FALSE);
	m_strlStop.EnableWindow();
	m_ctrlPlay.EnableWindow();

	// TODO: Add your control notification handler code here
	
}

void CMIDIPlayerDlg::OnPlay() 
{
	if(!m_midi.IsPlaying())
	{
		m_midi.Play();
		m_ctrlPlay.EnableWindow(FALSE);
		m_strlStop.EnableWindow();
		m_ctrlPause.EnableWindow();
	// TODO: Add your control notification handler code here
	
}
}

void CMIDIPlayerDlg::OnStop() 
{
	m_midi.Stop();
	m_ctrlPlay.EnableWindow();
	m_strlStop.EnableWindow(FALSE);
	m_ctrlPause.EnableWindow(FALSE);
	// TODO: Add your control notification handler code here
	
}

void CMIDIPlayerDlg::OnOpen() 
{
	CString filename;
	CFileDialog dlg(TRUE,NULL,NULL,OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT,
		_T("Midi文件(*.MIDI)|*.TXT|"));
	if(IDOK==dlg.DoModal())
	{
		filename.Format("%s",dlg.GetFileName());
	}
m_midi.Open(filename);	
}

void CMIDIPlayerDlg::OnTimer(UINT nIDEvent) 
{
CString strInfo;
	int nMinutes = m_midi.GetMinutes();
	if( nMinutes < 0 )
		nMinutes = 0;
	int nSeconds = m_midi.GetSeconds();
	if( nSeconds < 0 )
		nSeconds = 0;
	int nTotalMinutes, nTotalSeconds;
	m_midi.GetLength( &nTotalMinutes, &nTotalSeconds );
	if( nTotalMinutes < 0 )
		nTotalMinutes = 0;
	if( nTotalSeconds < 0 )
		nTotalSeconds = 0;
	strInfo.Format( " %s, %02d:%02d %02d:%02d    ",
		m_midi.IsPlaying() ? "PLAYING" : "!PLAYING",
		nMinutes, nSeconds,
		nTotalMinutes, nTotalSeconds );
	m_time=strInfo;
	UpdateData(FALSE);
	CDialog::OnTimer(nIDEvent);
}