手把手教您用MFC做MP3音樂播放器

1、打開vc6.0，建立如圖所示mfc工程文件選擇基于對話框的確定刪除所有空間，建立如圖所示對話框屬性如下：播放 idc_open；添加 idc_fileopen；暫停 idc_pause；刪除 idc_del；停止 idc_stop；退出 idc_exit；音樂名編輯框 idc_filename；音量控制滑塊 idc_slider1；音量控制編輯框 idc_vol；建立類向導對應如下：在工程文件，右鍵，插入，bitmap位圖引入你想插入的背景圖，必須是bmp格式的進入你的dlg.cpp文件在onpaint函數下添加代碼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是你的位圖地址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); 編譯運行，你就會看到背景有圖片了。插入-類，找到geneticclass，類名mp3.cpp你會發(fā)現在頭文件中多了一個mp3.h文件在mp3.h文件中添加代碼如下/ 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中添加如下代碼/ 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中添加一行代碼：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中頭文件如下：#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在對話框中雙擊添加添加onfileopen函數，代碼如下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);/設置放置計數器區(qū)域的外觀dc.settextcolor(rgb(255,255,203);/設置數字顯示的顏色mtime.format(%02d:%02d:%02d,hour,minute,second);/顯示時間進度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);/獲取文件名 m_list.setcursel(m_list.getcount()-1);雙擊播放，進入代碼，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);/設置放置計數器區(qū)域的外觀dc.settextcolor(rgb(255,255,203);/設置數字顯示的顏色mtime.format(%02d:%02d:%02d,hour,minute,second);/顯示時間進度dc.textout(280,128,mtime);if(index=-1)messagebox(請?zhí)砑右魳?;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，暫停，停止，刪除，退出代碼如下void cmp3dlg:onpause() / todo: add your control notification handler code herecstring strtemp;mp3 mp3;getdlgitemtext(idc_pause,strtemp

18、);/獲取按鈕狀態(tài)if (strtemp.compare(暫停)=0)mp3.pause();setdlgitemtext(idc_pause,繼續(xù));killtimer(0);/取消計數器的顯示if (strtemp.compare(繼續(xù))=0)mp3.resum();settimer(0,1000,null);setdlgitemtext(idc_pause,暫停);void cmp3dlg:onstop() / todo: add your control notification handler code heremp3 mp3;mp3.stop();setdlgitemtext(id

19、c_pause,暫停);killtimer(0);/取消計數器的顯示cstring mtime;cclientdc dc(this);hour=0;minute=0;second=0;dc.setbkcolor(rgb(124,252,0);/設置放置計數器區(qū)域的外觀dc.settextcolor(rgb(255,255,203);/設置數字顯示的顏色mtime.format(%02d:%02d:%02d,hour,minute,second);/顯示時間進度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;/歌曲時間置0if (index!=cb_er

21、r)m_list.deletestring(index);void cmp3dlg:onexit() / todo: add your control notification handler code herecdialog:oncancel();ctrl+w打開類向導，如圖，添加ontimer函數代碼如下：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);/設置放置計數器區(qū)域的外觀dc.settextcolor(rgb(255,255,203);/設置數字顯示的顏色 if(second=60)/設置鐘表的顯示minute+;second=0;if(minute=60)hour+;minute=0;mtime.format(%02d:%02d:%02d,hour,minute,second);/顯示時間進度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);/獲取當前播放文件的信息updatedata(false);cdialog:ontimer(nidevent);ctrl+w打開類向導添加函數如下void cmp3dlg:ondblclklist() /在列表中選中，雙擊左鍵播放音樂cstring mtime;mp3 mp3;cclientdc dc(this);hour=0;minute=0;second=0;dc.setbkcolor(rgb(124,252,0);/設置放置計數器

24、區(qū)域的外觀dc.settextcolor(rgb(255,255,203);/設置數字顯示的顏色mtime.format(%02d:%02d:%02d,hour,minute,second);/顯示時間進度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);打開類向導，添加函數如下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;打開類向導，添加函數如下void cmp3dlg:onrelea

26、sedcaptureslider1(nmhdr* pnmhdr, lresult* presult) / todo: add your control notification handler code heresetvolumn(m_slider.getpos();*presult = 0;添加聲音設置函數如下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;到此已經基本完成了，我們可以試聽一下接下來我們可以到包成exe可執(zhí)行文件，為了去掉那個不好看的圖標

28、，我們可以進入res文件夾，把原來的圖標刪掉，不過，你要放入一個cio格式的圖片作為圖標，cio格式網上有很多轉換的，刪掉原圖標后，程序會自動生成一個你放進去的圖標。接下來演示打包：工程，設置，或者按alt+f7，如圖設置組建，批組建，如圖創(chuàng)建完成后，你就會發(fā)現在你的工程文件中多了一個release文件夾，打開找到exe，這個文件就是打包好的，隨便放到哪里都可以執(zhí)行，至此，工作基本完成了，最后附上源代碼，僅供參考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); /顯示時間控制m_slider.setrange(0,1000); /移動范圍m_slider.setpos(500);/滑塊指針的初始位置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);/設置放置計數器區(qū)域的外觀dc.settextcolor(rgb(255,255,203);/設置數字顯示的顏色mtime.format(%02d:%02d:%02d,hour,minute,second);/顯示時間進度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);/獲取文件名 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);/設置放置計數器區(qū)域的外觀dc.settextcolor(rgb(255,255,203);/設置數字顯示的顏色mtime.format(%02d:%02d:%02d,hour,minute,second);/顯示時間進度dc.textout(280,128,mtime);if(index=-1)messagebox(請?zhí)砑右魳?;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);/獲取按鈕狀態(tài)if (strtemp.compare(暫停)=0)mp3.pause();setdlgitemtext(idc_pause,繼續(xù));killtimer(0);/取消計數器的顯示if (strtemp.compare(繼續(xù))=0)mp3.resum();settimer(0,1000,null);setdlgitemtext(idc_pause,暫停);void cmp3dlg:onstop() / todo: add your control notification handler code heremp3