手把手教您用MFC做MP3音乐播放器

1、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()CP

2、aintDC dc(this); / device context for paintingSendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);/ Center icon in client rectangleint cxIcon = GetSystemMetrics(SM_CXICON);int cyIcon = GetSystemMetrics(SM_CYICON);CRect rect;GetClientRect(&rect);int x = (rect.Width() - cxIcon + 1) / 2;int y =

3、 (rect.Height() - cyIcon + 1) / 2;/ Draw the icondc.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; bmpBackgro

4、und.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 !de

5、fined(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.hclass Mp3 public:Mp3();virtual Mp3(); HWND m_hWnd; /DWORD DeviceID;/ID MCI_OPEN_PARMS mciopenparms; / v

6、oid 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 Mp3.h#include Mp3

7、.h#ifdef _DEBUG#undef THIS_FILEstatic 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); /mciopenparms.lpstrElementName=Strfilepath;/DWORD dwReturn;if (dwReturn=

8、mciSendCommand(NULL,MCI_OPEN,MCI_OPEN_ELEMENT|MCI_WAIT,(DWORD)(LPVOID)&mciopenparms)/bufferchar buffer256; mciGetErrorString(dwReturn,buffer,256);MessageBox(hwnd,buffer,MB_ICONHAND|MB_ICONERROR|MB_ICONSTOP);DeviceID=mciopenparms.wDeviceID; /DWORD Mp3:getinformation(DWORD item)/MCIMCI_STATUS_PARMS mc

9、istatusparms;/mcistatusparms.dwItem=item;mcistatusparms.dwReturn=0;/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; /mciSendCommand(Devic

10、eID,MCI_PLAY,MCI_FROM|MCI_NOTIFY,(DWORD)(LPVOID)&mciplayparms);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,

11、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 Win32m_hIcon = AfxGetApp()-LoadIcon(IDI_ICON1);hour=0;mi

12、nute=0;second=0;dlg.cpp中头文件如下：#include stdafx.h#include Mp3.h#include Mp3Dlg.h#include Mmsystem.h#include Digitalv.h #include Mp3.h /#pragma comment(lib,Winmm.lib)#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic 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:Onfileope

13、n() 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,filefiler);if (dlg.DoModal()=IDOK)CString strfilepath=dlg.GetPathName();CString strfilename=dlg.GetFileName();SetDlgItemText(IDC_filena

14、me,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_ope

15、n)-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 i

16、ndex=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.

17、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 hereCString strtemp;Mp3 mp3;GetDlgItemText(IDC_pause,strtemp

18、);/获取按钮状态if (strtemp.Compare(暂停)=0)mp3.Pause();SetDlgItemText(IDC_pause,继续);KillTimer(0);/取消计数器的显示if (strtemp.Compare(继续)=0)mp3.resum();SetTimer(0,1000,NULL);SetDlgItemText(IDC_pause,暂停);void CMp3Dlg:Onstop() / TODO: Add your control notification handler code hereMp3 mp3;mp3.Stop();SetDlgItemText(ID

19、C_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);G

20、etDlgItem(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0if (index!=CB_ER

21、R)m_list.DeleteString(index);void CMp3Dlg:Onexit() / TODO: Add your control notification handler code hereCDialog: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 defaultCString mtime;Mp3 mp3;second+;CClientDC dc(thi

22、s);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;

23、 cdfrom=MCI_MAKE_MSF(MCI_MSF_MINUTE(cdf),MCI_MSF_SECOND(cdf),MCI_MSF_FRAME(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

24、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);mp

25、3.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 hereUpdateData(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:OnRelea

26、sedcaptureSlider1(NMHDR* pNMHDR, LRESULT* pResult) / TODO: Add your control notification handler code hereSetvolumn(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;

27、mcisetvolumn.dwValue=vol; MCI_OPEN_PARMS mciopenparms;DWORD DeviceID;DeviceID=mciopenparms.wDeviceID;mciSendCommand(DeviceID,MCI_SETAUDIO,MCI_DGV_SETAUDIO_VALUE|MCI_DGV_SETAUDIO_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

28、，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 Mp

29、3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_FILEstatic char THIS_FILE = _FILE_;#endif/ CAboutDlg dialog used for App Aboutclass CAboutDlg : public CDialogpublic:CAboutDlg();/ Dialog Data/AFX_DATA(CA

30、boutDlg)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/ Implementationprotected:/AFX_MSG(CAboutDlg)/AFX_MSGDECLARE_MESSAGE_MAP();CAboutDlg:CAboutDlg()

31、: CDialog(CAboutDlg:IDD)/AFX_DATA_INIT(CAboutDlg)/AFX_DATA_INITvoid CAboutDlg:DoDataExchange(CDataExchange* pDX)CDialog:DoDataExchange(pDX);/AFX_DATA_MAP(CAboutDlg)/AFX_DATA_MAPBEGIN_MESSAGE_MAP(CAboutDlg, CDialog)/AFX_MSG_MAP(CAboutDlg)/ No message handlers/AFX_MSG_MAPEND_MESSAGE_MAP()/ CMp3Dlg dia

32、logCMp3Dlg: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 Win32m_hIcon = AfxGetApp()-LoadIcon(IDI_ICON1);hour=0;minute=0;second=0;void CMp3Dlg:DoDataExchange(CDataExchange

33、* 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_MAPBEGIN_MESSAGE_MAP(CMp3Dlg, CDialog)/AFX_MSG_MAP(CMp3Dlg)ON_WM_SYSCOMMAND()ON_WM_PAINT()ON_WM_QUERYDRAGICON()ON_BN_CLICKED(ID_e

34、xit, 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(I

35、DC_del, Ondel)ON_LBN_DBLCLK(IDC_LIST, OnDblclkList)/AFX_MSG_MAPEND_MESSAGE_MAP()/ CMp3Dlg message handlersBOOL 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(ID

36、M_ABOUTBOX AppendMenu(MF_SEPARATOR);pSysMenu-AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);/ Set the icon for this dialog. The framework does this automatically/ when the applications main window is not a dialogSetIcon(m_hIcon, TRUE);/ Set big iconSetIcon(m_hIcon, FALSE); / Set small iconSetWind

37、owText(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);/ TODO: Add extra ini

38、tialization herereturn TRUE; / return TRUE unless you set the focus to a controlvoid CMp3Dlg:OnSysCommand(UINT nID, LPARAM lParam)if (nID & 0xFFF0) = IDM_ABOUTBOX)CAboutDlg dlgAbout;dlgAbout.DoModal();elseCDialog:OnSysCommand(nID, lParam);/ If you add a minimize button to your dialog, you will need

39、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 CMp3Dlg:OnPaint() if (IsIconic()CPaintDC dc(this); / device context for paintingSendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);/ Center icon in

40、 client rectangleint 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 icondc.DrawIcon(x, y, m_hIcon);else/CDialog:OnPaint();CPaintDC dc(this); CRec

41、t rect; GetClientRect(&rect); CDC dcMem; dcMem.CreateCompatibleDC(&dc); CBitmap bmpBackground; bmpBackground.LoadBitmap(IDB_BITMAP6); BITMAP bitmap; bmpBackground.GetBitmap(&bitmap); CBitmap *pbmpOld=dcMem.SelectObject(&bmpBackground); dc.StretchBlt(0,0,rect.Width(),rect.Height(),&dcMem,0,0,bitmap.b

42、mWidth,bitmap.bmHeight,SRCCOPY); / The system calls this to obtain the cursor to display while the user drags/ the minimized window.HCURSOR CMp3Dlg:OnQueryDragIcon()return (HCURSOR) m_hIcon;void CMp3Dlg:Onexit() / TODO: Add your control notification handler code hereCDialog:OnCancel();void CMp3Dlg:O

43、nCustomdrawSlider1(NMHDR* pNMHDR, LRESULT* pResult) / TODO: Add your control notification handler code hereUpdateData(true);m_int=m_slider.GetPos()/10;Setvolumn(m_slider.GetPos();UpdateData(false);*pResult = 0;void CMp3Dlg:Onfileopen() char filefiler=mp3文件(*.mp3)|*.mp3| wma文件(*.wma)|*.wma| wav文件(*.w

44、av)|*.wav|;CFileDialog dlg(true,NULL,NULL,OFN_HIDEREADONLY|OFN_ALLOWMULTISELECT|OFN_ENABLESIZING,filefiler);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;sec

45、ond=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);GetDl

46、gItem(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);void CMp3Dlg:Onopen() CString strfilename;int index=m_list.GetCurSel();CString mtime;CClientDC dc(this);Mp3 mp3;hour=0;minute=0;s

47、econd=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();mp

48、3.Load(this-m_hWnd,strfilename);mp3.Play(); SetTimer(0,1000,NULL);void CMp3Dlg:Onpause() / TODO: Add your control notification handler code hereCString strtemp;Mp3 mp3;GetDlgItemText(IDC_pause,strtemp);/获取按钮状态if (strtemp.Compare(暂停)=0)mp3.Pause();SetDlgItemText(IDC_pause,继续);KillTimer(0);/取消计数器的显示if (strtemp.Compare(继续)=0)mp3.resum();SetTimer(0,1000,NULL);SetDlgItemText(IDC_pause,暂停);void CMp3Dlg:Onstop() / TODO: Add your control notification handler code hereMp3