手把手教您用MFC做MP3音乐播放器

打开vc6.0，建立如图所示mfc工程文件

选择基于对话框的确定

删除所有空间，建立如图所示对话框

属性如下：

播放IDC_open；

添加IDC_fileopen；

暂停IDC_pause；

删除IDC_del；

停止IDC_stop；

退出IDC_exit；

音乐名编辑框IDC_filename；音量控制滑块IDC_SLIDER1；音量控制编辑框IDC_vol；

建立类向导对应如下：

在工程文件，右键，插入，bitmap位图

引入你想插入的背景图，必须是bmp格式的

进入你的dlg.cpp文件

在onpaint函数下添加代码

void CMp3Dlg::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();

CPaintDC dc(this);

CRect rect;

GetClientRect(&rect);

CDC dcMem;

dcMem.CreateCompatibleDC(&dc);

CBitmap bmpBackground;

bmpBackground.LoadBitmap(IDB_BITMAP6); /IDB_BITMAP6是你的位图地址

BITMAP bitmap;

bmpBackground.GetBitmap(&bitmap);

CBitmap *pbmpOld=dcMem.SelectObject(&bmpBackground);

dc.StretchBlt(0,0,rect.Width(),rect.Height(),&dcMem,0,0,bitmap.bmWidth,bitmap.bmHeight ,SRCCOPY);

}

}

编译运行，你就会看到背景有图片了。

插入-类，找到geneticclass，类名mp3.cpp

你会发现在头文件中多了一个mp3.h文件

在mp3.h文件中添加代码如下

// Mp3.h: interface for the Mp3 class.

//

//////////////////////////////////////////////////////////////////////

#if !defined(AFX_MP3_H__20D325E5_A96A_43FE_A485_92F57C68DD0D__INCLUDED_)

#define AFX_MP3_H__20D325E5_A96A_43FE_A485_92F57C68DD0D__INCLUDED_

#if _MSC_VER > 1000

#pragma once

#endif // _MSC_VER > 1000

#include "Mmsystem.h"

class Mp3

{

public:

Mp3();

virtual ~Mp3();

HWND m_hWnd; //????μ±?°′°?úμ???±ú

DWORD DeviceID;//???¨2￥·?ò?à?μ?éè±?ID

MCI_OPEN_PARMS mciopenparms; //???¨′ò?aò?à????tμ?2?êy

void Load(HWND hwnd,CString Strfilepath);

DWORD getinformation(DWORD item);

void Play();

void Pause();

void resum();

void Stop();

};

#endif // !defined(AFX_MP3_H__20D325E5_A96A_43FE_A485_92F57C68DD0D__INCLUDED_) 在mp3.cpp中添加如下代码

// Mp3.cpp: implementation of the Mp3 class.

//

//////////////////////////////////////////////////////////////////////

#include "stdafx.h"

#include "Mp32￥·??÷.h"

#include "Mp3.h"

#ifdef _DEBUG

#undef THIS_FILE

static char THIS_FILE[]=__FILE__;

#define new DEBUG_NEW

#endif

//////////////////////////////////////////////////////////////////////

// Construction/Destruction

//////////////////////////////////////////////////////////////////////

Mp3::Mp3()

{

}

Mp3::~Mp3()

{

}

void Mp3::Load(HWND hwnd,CString Strfilepath)

{

m_hWnd=hwnd;

mciSendCommand(DeviceID,MCI_CLOSE,0,0); //?ó?????t?°?è??3yé?′?éè??

mciopenparms.lpstrElementName=Strfilepath;//??ò?à????t?·??′???éè±?

DWORD dwReturn;

if

(dwReturn=mciSendCommand(NULL,MCI_OPEN,MCI_OPEN_ELEMENT|MCI_WAIT,(DWORD)(LPV OID)&mciopenparms))

{

//è?1?′ò?a꧰ü￡???3?′íD??￠′??úbuffer2￠??ê?3?′í?ˉ??

char buffer[256];

mciGetErrorString(dwReturn,buffer,256);

MessageBox(hwnd,buffer,"3?′í?ˉ??",MB_ICONHAND|MB_ICONERROR|MB_ICONSTOP);

}

DeviceID=mciopenparms.wDeviceID; //?à??ì?éè±?ààDí±ào?

}

DWORD Mp3::getinformation(DWORD item)

{

//MCI?ó?ú???óμ?×′ì?

MCI_STATUS_PARMS mcistatusparms;

//′y??è?μ?????

mcistatusparms.dwItem=item;

mcistatusparms.dwReturn=0;

//???à??ì?éè±?·￠?í??á?￡???è?μ±?°μ?×′ì?2?êy

mciSendCommand(DeviceID,MCI_STATUS,MCI_STATUS_ITEM,(DWORD)&mcistatusparms);

return mcistatusparms.dwReturn;

}

void Mp3::Play()

{

MCI_PLAY_PARMS mciplayparms;

mciplayparms.dwCallback=(DWORD)m_hWnd;

mciplayparms.dwFrom=0; //??′?′óí·2￥·?

mciSendCommand(DeviceID,MCI_PLAY,MCI_FROM|MCI_NOTIFY,(DWORD)(LPVOID)&mcipla yparms);

}

void Mp3::Pause()

{

mciSendCommand(DeviceID,MCI_PAUSE,0,0);

}

void Mp3::resum()

{

mciSendCommand(DeviceID,MCI_RESUME,0,0);

}

void Mp3::Stop()

{

mciSendCommand(DeviceID,MCI_STOP,0,0);

mciSendCommand(DeviceID,MCI_CLOSE,0,0);

}

在dlg.cpp文件的public中添加一行代码：int hour,minute,second;

在CMp3Dlg::CMp3Dlg(CWnd* pParent /*=NULL*/)中添加如下

CMp3Dlg::CMp3Dlg(CWnd* pParent /*=NULL*/)

: CDialog(CMp3Dlg::IDD, pParent)

{

//{{AFX_DATA_INIT(CMp3Dlg)

m_int = 0;

//}}AFX_DATA_INIT

// Note that LoadIcon does not require a subsequent DestroyIcon in Win32

m_hIcon = AfxGetApp()->LoadIcon(IDI_ICON1);

hour=0;minute=0;second=0;

}

dlg.cpp中头文件如下：

#include "stdafx.h"

#include "Mp32￥·??÷.h"

#include "Mp32￥·??÷Dlg.h"

#include "Mmsystem.h"

#include "Digitalv.h"

#include "Mp3.h" //ò?á?????ó?μ?

#pragma comment(lib,"Winmm.lib")

#ifdef _DEBUG

#define new DEBUG_NEW

#undef THIS_FILE

static char THIS_FILE[] = __FILE__;

#endif

在对话框中双击添加添加onfileopen函数，代码如下

void CMp3Dlg::Onfileopen()

{

char filefiler[]="mp3文件(*.mp3)|*.mp3|"

"wma文件(*.wma)|*.wma|"

"wav文件(*.wav)|*.wav|";

CFileDialog

dlg(true,NULL,NULL,OFN_HIDEREADONLY|OFN_ALLOWMULTISELECT|OFN_ENABLESIZING,filefile r);

if (dlg.DoModal()==IDOK)

{

CString strfilepath=dlg.GetPathName();

CString strfilename=dlg.GetFileName();

SetDlgItemText(IDC_filename,strfilename);

CString mtime;

CClientDC dc(this);

hour=0;minute=0;second=0;

dc.SetBkColor(RGB(124,252,0));//设置放置计数器区域的外观

dc.SetTextColor(RGB(255,255,203));//设置数字显示的颜色

mtime.Format("%02d:%02d:%02d",hour,minute,second);//显示时间进度

dc.TextOut(280,128,mtime);

Mp3 mp3;

mp3.Load(this->m_hWnd,strfilepath);

GetDlgItem(IDC_open)->EnableWindow(TRUE);

GetDlgItem(IDC_pause)->EnableWindow(TRUE);

GetDlgItem(IDC_stop)->EnableWindow(TRUE);

GetDlgItem(IDC_del)->EnableWindow(TRUE);

m_list.InsertString(m_list.GetCount(),strfilename);//获取文件名

m_list.SetCurSel(m_list.GetCount()-1);

}

双击播放，进入代码，添加如下

void CMp3Dlg::Onopen()

{

CString strfilename;

int index=m_list.GetCurSel();

CString mtime;

CClientDC dc(this);

Mp3 mp3;

hour=0;minute=0;second=0;

dc.SetBkColor(RGB(124,252,0));//设置放置计数器区域的外观

dc.SetTextColor(RGB(255,255,203));//设置数字显示的颜色

mtime.Format("%02d:%02d:%02d",hour,minute,second);//显示时间进度

dc.TextOut(280,128,mtime);

if(index==-1)

{

MessageBox("请添加音乐");

return;

}

m_list.GetText(index,strfilename);

SetDlgItemText(IDC_filename,strfilename);

mp3.Stop();

mp3.Load(this->m_hWnd,strfilename);

mp3.Play();

SetTimer(0,1000,NULL);

}

同理，暂停，停止，删除，退出代码如下

void CMp3Dlg::Onpause()

{

// TODO: Add your control notification handler code here CString strtemp;

Mp3 mp3;

GetDlgItemT ext(IDC_pause,strtemp);//获取按钮状态

if (https://www.360docs.net/doc/388450551.html,pare("暂停")==0)

{

mp3.Pause();

SetDlgItemText(IDC_pause,"继续");

KillTimer(0);//取消计数器的显示

}

if (https://www.360docs.net/doc/388450551.html,pare("继续")==0)

{

mp3.resum();

SetTimer(0,1000,NULL);

SetDlgItemText(IDC_pause,"暂停");

}

}

void CMp3Dlg::Onstop()

{

// TODO: Add your control notification handler code here Mp3 mp3;

mp3.Stop();

SetDlgItemText(IDC_pause,"暂停");

KillTimer(0);//取消计数器的显示

CString mtime;

CClientDC dc(this);

hour=0;minute=0;second=0;

dc.SetBkColor(RGB(124,252,0));//设置放置计数器区域的外观

dc.SetTextColor(RGB(255,255,203));//设置数字显示的颜色

mtime.Format("%02d:%02d:%02d",hour,minute,second);//显示时间进度dc.TextOut(280,128,mtime);

GetDlgItem(IDC_open)->EnableWindow(FALSE);

GetDlgItem(IDC_pause)->EnableWindow(FALSE);

GetDlgItem(IDC_stop)->EnableWindow(FALSE);

GetDlgItem(IDC_del)->EnableWindow(FALSE);

}

void CMp3Dlg::Ondel()

{

UpdateData(TRUE);

Mp3 mp3;

int index=m_list.GetCurSel();

mp3.Stop();

SetDlgItemText(IDC_filename,"");

KillTimer(0);

hour=0;minute=0;second=0;//歌曲时间置0

if (index!=CB_ERR)

{

m_list.DeleteString(index);

}

}

void CMp3Dlg::Onexit()

{

// TODO: Add your control notification handler code here

CDialog::OnCancel();

}

ctrl+w打开类向导，如图，添加ontimer函数

代码如下：

void CMp3Dlg::OnTimer(UINT nIDEvent)

{

// TODO: Add your message handler code here and/or call default

CString mtime;

Mp3 mp3;

second++;

CClientDC dc(this);

dc.SetBkColor(RGB(124,252,0));//设置放置计数器区域的外观

dc.SetTextColor(RGB(255,255,203));//设置数字显示的颜色

if(second==60)//设置钟表的显示

{

minute++;second=0;

}

if(minute==60)

{

hour++;minute=0;

}

mtime.Format("%02d:%02d:%02d",hour,minute,second);//显示时间进度

dc.TextOut(280,128,mtime);

DWORD cdf=mp3.getinformation(MCI_STATUS_POSITION);

DWORD cdfrom;

cdfrom=MCI_MAKE_MSF(MCI_MSF_MINUTE(cdf),MCI_MSF_SECOND(cdf),MCI_MSF_FRAM E(cdf));//获取当前播放文件的信息

UpdateData(false);

CDialog::OnTimer(nIDEvent);

}

ctrl+w打开类向导添加函数如下

void CMp3Dlg::OnDblclkList() //在列表中选中，双击左键播放音乐

{

CString mtime;

Mp3 mp3;

CClientDC dc(this);

hour=0;minute=0;second=0;

dc.SetBkColor(RGB(124,252,0));//设置放置计数器区域的外观

dc.SetTextColor(RGB(255,255,203));//设置数字显示的颜色

mtime.Format("%02d:%02d:%02d",hour,minute,second);//显示时间进度dc.TextOut(280,128,mtime);

CString strfilename;

int index=m_list.GetCurSel();

m_list.GetText(index,strfilename);

SetDlgItemText(IDC_filename,strfilename);

mp3.Stop();

mp3.Load(this->m_hWnd,strfilename);

mp3.Play();

SetTimer(0,1000,NULL);

}

打开类向导，添加函数如下

void CMp3Dlg::OnCustomdrawSlider1(NMHDR* pNMHDR, LRESULT* pResult) {

// TODO: Add your control notification handler code here

UpdateData(true);

m_int=m_slider.GetPos()/10;

Setvolumn(m_slider.GetPos());

UpdateData(false);

*pResult = 0;

}

打开类向导，添加函数如下

void CMp3Dlg::OnReleasedcaptureSlider1(NMHDR* pNMHDR, LRESULT* pResult)

{

// TODO: Add your control notification handler code here

Setvolumn(m_slider.GetPos());

*pResult = 0;

}

添加声音设置函数如下

DWORD CMp3Dlg::Setvolumn(DWORD vol)

{

MCI_DGV_SETAUDIO_PARMS mcisetvolumn;

mcisetvolumn.dwCallback=NULL;

mcisetvolumn.dwItem=MCI_DGV_SETAUDIO_VOLUME;

mcisetvolumn.dwValue=vol;

MCI_OPEN_PARMS mciopenparms;

DWORD DeviceID;

DeviceID=mciopenparms.wDeviceID;

mciSendCommand(DeviceID,MCI_SETAUDIO,MCI_DGV_SETAUDIO_VALUE|MCI_DGV_SETAU DIO_ITEM,(DWORD)(LPVOID)&mcisetvolumn);

// return mcisetvolumn.dwValue;

return 0;

}

到此已经基本完成了，我们可以试听一下

接下来我们可以到包成exe可执行文件，为了去掉那个不好看的图标，我们可以进入res文件夹，把原来的图标删掉，不过，你要放入一个cio格式的图片作为图标，cio格式网上有很多转换的，删掉原图标后，程序会自动生成一个你放进去的图标。接下来演示打包：

工程，设置，或者按alt+f7，如图设置

组建，批组建，如图

创建完成后，你就会发现在你的工程文件中多了一个release文件夹，打开找到exe，这个文件就是打包好的，随便放到哪里都可以执行，至此，工作基本完成了，最后附上源代码，仅供参考

dlg.cpp文件

// Mp3播放器Dlg.cpp : implementation file

//

#include "stdafx.h"

#include "Mp3播放器.h"

#include "Mp3播放器Dlg.h"

#include "Mmsystem.h"

#include "Digitalv.h"

#include "Mp3.h" //音量控制用到

#pragma comment(lib,"Winmm.lib")

#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()

/////////////////////////////////////////////////////////////////////////////

// CMp3Dlg dialog

CMp3Dlg::CMp3Dlg(CWnd* pParent /*=NULL*/)

: CDialog(CMp3Dlg::IDD, pParent)

{

//{{AFX_DATA_INIT(CMp3Dlg)

m_int = 0;

//}}AFX_DATA_INIT

// Note that LoadIcon does not require a subsequent DestroyIcon in Win32 m_hIcon = AfxGetApp()->LoadIcon(IDI_ICON1);

hour=0;minute=0;second=0;

}

void CMp3Dlg::DoDataExchange(CDataExchange* pDX)

{

CDialog::DoDataExchange(pDX);

//{{AFX_DATA_MAP(CMp3Dlg)

DDX_Control(pDX, IDC_LIST, m_list);

DDX_Control(pDX, IDC_SLIDER1, m_slider);

DDX_Text(pDX, IDC_vol, m_int);

//}}AFX_DATA_MAP

}

BEGIN_MESSAGE_MAP(CMp3Dlg, CDialog)

//{{AFX_MSG_MAP(CMp3Dlg)

ON_WM_SYSCOMMAND()

ON_WM_PAINT()

ON_WM_QUERYDRAGICON()

ON_BN_CLICKED(ID_exit, Onexit)

ON_NOTIFY(NM_CUSTOMDRAW, IDC_SLIDER1, OnCustomdrawSlider1)

ON_BN_CLICKED(IDC_fileopen, Onfileopen)

ON_BN_CLICKED(IDC_open, Onopen)

ON_BN_CLICKED(IDC_pause, Onpause)

ON_BN_CLICKED(IDC_stop, Onstop)

ON_NOTIFY(NM_RELEASEDCAPTURE, IDC_SLIDER1, OnReleasedcaptureSlider1)

ON_WM_TIMER()

ON_BN_CLICKED(IDC_del, Ondel)

ON_LBN_DBLCLK(IDC_LIST, OnDblclkList)

//}}AFX_MSG_MAP

END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////

// CMp3Dlg message handlers

BOOL CMp3Dlg::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

SetWindowText("MP3播放器");

MoveWindow(250,150,580,500); //显示时间控制

m_slider.SetRange(0,1000); //移动范围

m_slider.SetPos(500);//滑块指针的初始位置

GetDlgItem(IDC_open)->EnableWindow(FALSE);

GetDlgItem(IDC_pause)->EnableWindow(FALSE);

GetDlgItem(IDC_stop)->EnableWindow(FALSE);

GetDlgItem(IDC_del)->EnableWindow(FALSE);