100个vc小项目开发

100个vc小项目开发：二、一步一点设计音乐播放器[源码解读]文章作者：July软件来源：开源==================1.有不正之处，恳请指正。

2.本文贴出的是关键实现代码部分，只做粗略展示。

3.转载，请注明出处。

谢谢。

---------一、先画对话框，IDD_MYPLAYER_DIALOG，界面如图：二、然后，对话框相关处理完成后，在CMyPlayerApp里头，编写如下代码：设置几个全局变量：CMyPlayerApp theApp;CStringArray m_strPlayListArray;int m_nPlayOrder[2000];int m_nNowPlaying;UINT m_nPlayMode;HWND hAudio;FILELIST fileList[10];int nCurrentList;CString strCurrentDir;而后，编写InitInstance()的代码：BOOL CMyPlayerApp::InitInstance(){AfxEnableControlContainer();m_hMutex=CreateMutex(NULL,FALSE,"星空物语");if (GetLastError()==ERROR_ALREADY_EXISTS ){HWND hwnd=FindWindow(NULL,"星空物语");if(hwnd!=NULL);{if(IsWindowVisible(hwnd))return FALSE;SendMessage(hwnd,MYWM_NOTIFYICON,NULL,(LPARAM)WM_LBUTTONDOWN); }return FALSE ;}hAudio=NULL;TCHAR szCurDir[MAX_PATH];GetCurrentDirectory(MAX_PATH,szCurDir);strCurrentDir=szCurDir;m_nPlayMode=MODE_RAND;CMyPlayerDlg dlg;m_pMainWnd = &dlg;int nResponse = dlg.DoModal();if (nResponse == IDOK){}else if (nResponse == IDCANCEL){}return FALSE;}三、// MyPlayerDlg.h : header file 头文件里头：class CMyPlayerDlg : public CDialog{// Constructionpublic:CString m_strLyricPath;void DeleteNotifyIcon();void CreateNotifyIcon();BOOL fPlay;void DestroyMenuDlg();CMenuDlg* m_pMenuDlg;int m_nVolume;void WriteConfig();BOOL ReadConfig();BOOL IsFileExist(CString strFileName);BOOL GetFileList(CString strLine,int nIndex); void InitFileList();int nRollTextCounter;void CirculatePlay();void DropFilesInPlayList(HDROP hDrop);void DropFilesInMain(HDROP hDrop);BOOL IsSupportFile(CString strFileName);void GetDropFiles(HDROP hDrop);void FormatTitle(CString strFile);BOOL fPlaying;UINT m_nTime;void Play(int nIndex);CString GetFileTitle(CString strFileName); BOOL IsLyricDlgAttach();BOOL IsPlayListAttach();void MoveLyricWindow();void MovePlayListWindow();BOOL fInited;void CreateLyric();CLyricDlg* m_pLyricDlg;void CreatePlayList();CPlayListDlg* m_pPlayListDlg;void InitSize();void ExitPlayer();void MoveSlide();void InitText();void CountTime();CString strTime;void InitRect();CRect rectTitle;CRect rectTime;void DrawTime(CDC*pDC);void RollText();CString strOutText;CString strTitle;void DrawText(CDC*pDC);void DrawMainPicture(CDC*pDC);void InitButtons();CMyPlayerDlg(CWnd* pParent = NULL);// standard constructor// Dialog Data//{{AFX_DATA(CMyPlayerDlg)enum { IDD = IDD_MYPLAYER_DIALOG };CSkinButtonm_btnShowMenu;CSkinButtonm_btnLyric;CVolumeButtonm_volume;CSlideButtonm_slide;CTransparentStaticm_stcMode;CTransparentStaticm_stcPlay;CSkinButtonm_btnStop;CSkinButtonm_btnPrev;CSkinButtonm_btnPLShow;CSkinButtonm_btnPlay;CSkinButtonm_btnOpen;CSkinButtonm_btnNext;CSkinButtonm_btnMin;CSkinButtonm_btnHide;CSkinButtonm_btnExit;CButtonm_buttonOK;//}}AFX_DATA// ClassWizard generated virtual function overrides//{{AFX_VIRTUAL(CMyPlayerDlg)protected:virtual void DoDataExchange(CDataExchange* pDX);// DDX/DDV support virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam); //}}AFX_VIRTUAL// Implementationprotected:HICON m_hIcon;// Generated message map functions//{{AFX_MSG(CMyPlayerDlg)virtual BOOL OnInitDialog();afx_msg void OnPaint();afx_msg HCURSOR OnQueryDragIcon();afx_msg void OnLButtonDown(UINT nFlags, CPoint point); afx_msg void OnBtnExit();afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct); afx_msg void OnTimer(UINT nIDEvent);afx_msg void OnStaticMode();afx_msg void OnStaticPlay();afx_msg void OnBtnVolume();afx_msg void OnBtnSlide();virtual void OnCancel();virtual void OnOK();afx_msg void OnBtnPlaylistShow();afx_msg void OnMove(int x, int y);afx_msg void OnBtnLyric();afx_msg void OnBtnOpen();afx_msg void OnBtnNext();afx_msg void OnBtnPlay();afx_msg void OnBtnPrev();afx_msg void OnBtnStop();afx_msg void OnRButtonDown(UINT nFlags, CPoint point); afx_msg void OnBtnShowmenu();afx_msg void OnKillFocus(CWnd* pNewWnd);afx_msg void OnMenuNext();afx_msg void OnMenuOpen();afx_msg void OnMenuPlay();afx_msg void OnMenuPrev();afx_msg void OnMenuRand();afx_msg void OnMenuSeq();afx_msg void OnMenuSingle();afx_msg void OnMenuStop();afx_msg void OnMenuVoldown();afx_msg void OnMenuPause();afx_msg void OnMenuVolslc();afx_msg void OnMenuVolup();afx_msg void OnAboutStar();afx_msg void OnNotifyIcon(WPARAM wParam,LPARAM lParam); afx_msg void OnBtnHide();afx_msg void OnBtnMin();afx_msg void OnSetLyricpath();afx_msg void OnMenuOpenLyricpath();//}}AFX_MSGDECLARE_MESSAGE_MAP()};四、对应的// MyPlayerDlg.cpp : implementation file 实现文件里头：void CMyPlayerDlg::DoDataExchange(CDataExchange* pDX){CDialog::DoDataExchange(pDX);//{{AFX_DATA_MAP(CMyPlayerDlg)DDX_Control(pDX, IDC_BTN_SHOWMENU, m_btnShowMenu);DDX_Control(pDX, IDC_BTN_LYRIC, m_btnLyric);DDX_Control(pDX, IDC_BTN_VOLUME, m_volume);DDX_Control(pDX, IDC_BTN_SLIDE, m_slide);DDX_Control(pDX, IDC_STATIC_MODE, m_stcMode);DDX_Control(pDX, IDC_STATIC_PLAY, m_stcPlay);DDX_Control(pDX, IDC_BTN_STOP, m_btnStop);DDX_Control(pDX, IDC_BTN_PREV, m_btnPrev);DDX_Control(pDX, IDC_BTN_PLAYLIST_SHOW, m_btnPLShow);DDX_Control(pDX, IDC_BTN_PLAY, m_btnPlay);DDX_Control(pDX, IDC_BTN_OPEN, m_btnOpen);DDX_Control(pDX, IDC_BTN_NEXT, m_btnNext);DDX_Control(pDX, IDC_BTN_MIN, m_btnMin);DDX_Control(pDX, IDC_BTN_HIDE, m_btnHide);DDX_Control(pDX, IDC_BTN_EXIT, m_btnExit);//}}AFX_DATA_MAP}BEGIN_MESSAGE_MAP(CMyPlayerDlg, CDialog)//{{AFX_MSG_MAP(CMyPlayerDlg)ON_WM_PAINT()ON_WM_QUERYDRAGICON()ON_WM_LBUTTONDOWN()ON_BN_CLICKED(IDC_BTN_EXIT, OnBtnExit)ON_WM_CREATE()ON_WM_TIMER()ON_BN_CLICKED(IDC_STATIC_MODE, OnStaticMode)ON_BN_CLICKED(IDC_STATIC_PLAY, OnStaticPlay)ON_BN_CLICKED(IDC_BTN_VOLUME, OnBtnVolume)ON_BN_CLICKED(IDC_BTN_SLIDE, OnBtnSlide)ON_BN_CLICKED(IDC_BTN_PLAYLIST_SHOW, OnBtnPlaylistShow)ON_WM_MOVE()ON_BN_CLICKED(IDC_BTN_LYRIC, OnBtnLyric)ON_BN_CLICKED(IDC_BTN_OPEN, OnBtnOpen)ON_BN_CLICKED(IDC_BTN_NEXT, OnBtnNext)ON_BN_CLICKED(IDC_BTN_PLAY, OnBtnPlay)ON_BN_CLICKED(IDC_BTN_PREV, OnBtnPrev)ON_BN_CLICKED(IDC_BTN_STOP, OnBtnStop)ON_WM_RBUTTONDOWN()ON_BN_CLICKED(IDC_BTN_SHOWMENU, OnBtnShowmenu)ON_WM_KILLFOCUS()ON_COMMAND(IDC_MENU_NEXT, OnMenuNext)ON_COMMAND(IDC_MENU_OPEN, OnMenuOpen)ON_COMMAND(IDC_MENU_PLAY, OnMenuPlay)ON_COMMAND(IDC_MENU_PREV, OnMenuPrev)ON_COMMAND(IDC_MENU_RAND, OnMenuRand)ON_COMMAND(IDC_MENU_SEQ, OnMenuSeq)ON_COMMAND(IDC_MENU_SINGLE, OnMenuSingle)ON_COMMAND(IDC_MENU_STOP, OnMenuStop)ON_COMMAND(IDC_MENU_VOLDOWN, OnMenuVoldown)ON_COMMAND(IDC_MENU_PAUSE, OnMenuPause)ON_COMMAND(IDC_MENU_VOLSLC, OnMenuVolslc)ON_COMMAND(IDC_MENU_VOLUP, OnMenuVolup)ON_COMMAND(IDC_ABOUT_STAR, OnAboutStar)ON_MESSAGE(MYWM_NOTIFYICON,OnNotifyIcon)ON_BN_CLICKED(IDC_BTN_HIDE, OnBtnHide)ON_BN_CLICKED(IDC_BTN_MIN, OnBtnMin)ON_COMMAND(IDC_SET_LYRICPATH, OnSetLyricpath)ON_COMMAND(IDC_MENU_OPEN_LYRICPATH, OnMenuOpenLyricpath)//}}AFX_MSG_MAPEND_MESSAGE_MAP()五、以下是MyPlayerDlg对话框的初始化代码：BOOL CMyPlayerDlg::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 dialogSetIcon(m_hIcon, TRUE);// Set big iconSetIcon(m_hIcon, FALSE);// Set small icon// TODO: Add extra initialization hereInitButtons();InitRect();InitText();InitSize();CreateLyric();CreatePlayList();m_pMenuDlg=NULL;InitFileList();strTitle=" 星空物语 ";strTime="00:00";m_nTime=0;fInited=TRUE;fPlaying=FALSE;fPlay=TRUE;nRollTextCounter=0;SetWindowText("星空物语");m_strLyricPath="";if(ReadConfig()){m_pPlayListDlg->OpenList(nCurrentList);m_volume.SetPos(m_nVolume);if(m_nPlayMode==MODE_SEQ)OnStaticMode();if(m_nPlayMode==MODE_SINGLE){OnStaticMode();OnStaticMode();}}else{m_nPlayMode=MODE_RAND;nCurrentList=0;m_pPlayListDlg->OpenList(nCurrentList);m_nVolume=8;m_volume.SetPos(m_nVolume);}CreateNotifyIcon();SetWindowPos(&CWnd::wndTopMost,0,0,0,0,SWP_NOSIZE|SWP_NOMOVE);m_pLyricDlg->SetPlayListWnd(m_pPlayListDlg);return TRUE; // return TRUE unless you set the focus to a control }//字幕的画法void CMyPlayerDlg::DrawText(CDC *pDC){pDC->SetBkMode(TRANSPARENT);CFont font,*pOldFont;LOGFONT logFont;pDC->GetCurrentFont()->GetLogFont(&logFont);logFont.lfCharSet=134;logFont.lfWidth=6;logFont.lfWeight=10;lstrcpy(logFont.lfFaceName,"华文彩云");font.CreateFontIndirect(&logFont);pOldFont=pDC->SelectObject(&font);pDC->SetTextColor(RGB(255,255,0));pDC->TextOut(21,48,"Love You Forever");font.DeleteObject();logFont.lfWidth=6;logFont.lfHeight=12;logFont.lfWeight=0;lstrcpy(logFont.lfFaceName,"宋体");font.CreateFontIndirect(&logFont);pDC->SelectObject(&font);pDC->SetTextColor(RGB(0,255,0));pDC->TextOut(22,35,strOutText);pDC->TextOut(22,66,"状态:");pDC->TextOut(75,90,"☆For My Lover☆");pDC->SetTextColor(RGB(0,150,0));pDC->TextOut(60,103,"★星空物语MADE BY July★");font.DeleteObject();pDC->SelectObject(pOldFont);}六、计时器部分，OnTimer、RollText、CountTime、MoveSlide等4个函数：int CMyPlayerDlg::OnCreate(LPCREATESTRUCT lpCreateStruct){if (CDialog::OnCreate(lpCreateStruct) == -1)return -1;// TODO: Add your specialized creation code hereSetTimer(1,1000,NULL);fInited=FALSE;DragAcceptFiles(TRUE);return 0;}void CMyPlayerDlg::OnTimer(UINT nIDEvent){// TODO: Add your message handler code here and/or call default RollText();if(fPlaying){CountTime();MoveSlide();CirculatePlay();}CDialog::OnTimer(nIDEvent);}void CMyPlayerDlg::RollText(){TCHAR ch;strOutText="";for(UINT i=0;i<16;){ch=strTitle.GetAt(nRollTextCounter+i);strOutText+=ch;i++;}nRollTextCounter+=2;if(nRollTextCounter>=strTitle.GetLength()-16)nRollTextCounter=0;InvalidateRect(&rectTitle,TRUE);}//计时void CMyPlayerDlg::CountTime(){m_nTime=MCIWndGetPosition(hAudio)/MCIWndGetSpeed(hAudio); int nMinute=m_nTime/60;int nSecond=m_nTime%60;if(nMinute<10){if(nSecond<10)strTime.Format("0%d:0%d",nMinute,nSecond);elsestrTime.Format("0%d:%d",nMinute,nSecond);}else{if(nSecond<10)strTime.Format("%d:0%d",nMinute,nSecond);elsestrTime.Format("%d:%d",nMinute,nSecond);}InvalidateRect(&rectTime,TRUE);}//滚动条设置void CMyPlayerDlg::MoveSlide(){if(hAudio!=NULL)m_slide.SetSlidePos(MCIWndGetPosition(hAudio));}七、关键的播放代码，Playvoid CMyPlayerDlg::Play(int nIndex){if(nIndex>=m_strPlayListArray.GetSize())return;CString strFileName=m_strPlayListArray.GetAt(nIndex);if(!IsFileExist(strFileName)){m_pPlayListDlg->m_playlist.DeleteString(nIndex);m_strPlayListArray.RemoveAt(nIndex,1);return;}if(hAudio!=NULL){MCIWndDestroy(hAudio);hAudio=NULL;}try{hAudio=MCIWndCreate(GetSafeHwnd(),AfxGetInstanceHandle(), WS_CHILD|MCIWNDF_NOMENU,strFileName);}catch(...){if(nIndex>=0){m_pPlayListDlg->m_playlist.DeleteString(nIndex);m_strPlayListArray.RemoveAt(nIndex,1);}return;}if(hAudio!=NULL){MCIWndPlay(hAudio);if(!m_strLyricPath.IsEmpty()){if(!m_pLyricDlg->OpenLyric(m_strLyricPath,nIndex))m_pLyricDlg->OpenLyric(nIndex);}elsem_pLyricDlg->OpenLyric(nIndex);strTitle=GetFileTitle(strFileName);FormatTitle(strTitle);nRollTextCounter=0;m_nTime=0;fPlaying=TRUE;m_slide.SetRange(0,MCIWndGetLength(hAudio));m_slide.SetSlidePos(0);m_pPlayListDlg->m_playlist.SetCurSel(nIndex);int nSetVol=63*m_nVolume;if(nSetVol>1000)nSetVol=1000;MCIWndSetVolume(hAudio,nSetVol);}}void CMyPlayerDlg::OnBtnPlay(){// TODO: Add your control notification handler code here int n=m_pPlayListDlg->m_playlist.GetCurSel();if(n<0){if(m_strPlayListArray.GetSize()>0){Play(m_nPlayOrder[0]);m_nNowPlaying=0;}return;}Play(n);if(m_nPlayMode==MODE_RAND){for(int i=0;i<m_strPlayListArray.GetSize();i++){if(m_nPlayOrder[i]==n){m_nNowPlaying=i;break;}}}else{m_nNowPlaying=n;}}八、打开文件void CMyPlayerDlg::OnBtnOpen(){// TODO: Add your control notification handler code here CString strFilter="所有支持文件(*.mp3,*.wav,*.wma)|*.mp3;*.wav;*.wma||";CFileDialog fdlg(TRUE,NULL,NULL,OFN_HIDEREADONLY,strFilter); if(fdlg.DoModal()==IDOK){CString strFileName=fdlg.GetPathName();m_strPlayListArray.RemoveAll();m_strPlayListArray.Add(strFileName);CString strList,strFile;strFile=GetFileTitle(strFileName);strList.Format("01 %s",strFile);m_pPlayListDlg->m_playlist.ResetContent();m_pPlayListDlg->m_playlist.AddString(strList);Play(0);}}九、获取文件名CString CMyPlayerDlg::GetFileTitle(CString strFileName) {CString str;int nPos=-1;int nOldPos=-1;while((nPos=strFileName.Find("\\",nPos+1))>0)nOldPos=nPos;str=strFileName.Right(strFileName.GetLength()-nOldPos-1); strFileName=str.Left(str.GetLength()-4);return strFileName;}十、停止播放void CMyPlayerDlg::OnBtnStop(){// TODO: Add your control notification handler code here if(hAudio!=NULL){MCIWndStop(hAudio);m_nTime=0;fPlaying=FALSE;strTime="00:00";m_slide.SetSlidePos(0);InvalidateRect(&rectTime,TRUE);}}。