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How to play and record sounds

, 12 Mar 2001
A simple application that shows how to play and record sounds under Windows
// fisterDlg.cpp : implementation file
//

#include "stdafx.h"
#include "fister.h"
#include "fisterDlg.h"

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


/////////////////////////////////////////////////////////////////////////////
// CFisterDlg dialog

CFisterDlg::CFisterDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CFisterDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CFisterDlg)
		// 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 CFisterDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CFisterDlg)
	DDX_Control(pDX, IDC_PLAY, m_PlayButton);
	DDX_Control(pDX, IDC_RECORD, m_RecButton);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CFisterDlg, CDialog)
	//{{AFX_MSG_MAP(CFisterDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_RECORD, OnRecord)
	ON_BN_CLICKED(IDC_PLAY, OnPlay)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CFisterDlg message handlers

BOOL CFisterDlg::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
	
	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 CFisterDlg::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 CFisterDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CFisterDlg::OnRecord() 
{
	CString string;
	m_RecButton.GetWindowText(string);
	if(string == "Record")
	{
		StartRecordingToFile();
		m_RecButton.SetWindowText("Stop");
	}
	else
	{
		StopRecordingToFile();
		m_RecButton.SetWindowText("Record");
	}
}

void CFisterDlg::OnPlay() 
{
	CString string;
	m_PlayButton.GetWindowText(string);
	if(string == "Play")
	{
		StartPlayingFromFile();
		m_PlayButton.SetWindowText("Stop");
	}
	else
	{
		StopPlayingFromFile();
		m_PlayButton.SetWindowText("Play");
	}
}

void CFisterDlg::OnEndOfPlayingFile()
{
	m_PlayButton.SetWindowText("Play");
}

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About the Author

Thomas Holme
Web Developer
Denmark Denmark
No Biography provided

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