MusicPlayer « Y&D Studio

MusicPlayer

核心代码：
#include //滚动条控制时包含头文件
#include //文件夹选择对话框包含头文件

TCHAR szFileName[80][MAX_PATH];//播放列表
int iNum = 0;//音乐数
int iPlay = 0;//播放状态：0未播放 1正在播放 2暂停
int iPlayListIndex = 0;//播放列表索引
int iLength;//播放文件时长秒数

Main_Proc处理里添加：
HANDLE_MSG(hWnd, WM_HSCROLL, Main_OnHScroll);//水平滚动条消息。WM_VSCROLL垂直滚动条消息。

Main_OnInitDialog初始化添加：
//音量滚动条
//设置滚动条取值范围
//参考：http://www.rupeng.com/forum/redirect.php?fid=32&tid=601&goto=nextoldset
//http://hi.baidu.com/mowm/blog/item/c76d07ee77e5101efcfa3cd0.html
SendMessage(GetDlgItem(hwnd, IDC_TRBVOLUME), TBM_SETRANGEMIN, TRUE, 0);//最小值
SendMessage(GetDlgItem(hwnd, IDC_TRBVOLUME), TBM_SETRANGEMAX, TRUE, 1000);//最大值
SendMessage(GetDlgItem(hwnd, IDC_TRBVOLUME), TBM_SETPOS, TRUE, 1000);//当前位置

////////////////////////////////////////////////////////////////////////////////
// Main_OnCommand
void Main_OnCommand(HWND hwnd, int id, HWND hwndCtl, UINT codeNotify)
{
switch(id)
{
case IDC_BTNOPENFILES://添加文件按钮
OpenFiles(hwnd);
break;
case IDC_BTNSELECTFOLDER:
SelectFolder(hwnd);
break;
case IDC_BTNPLAY://播放暂停按钮
if(0 == iPlay)//未播放
{
//获得选中项播放列表索引
iPlayListIndex = SendMessage(GetDlgItem(hwnd, IDC_LST1), LB_GETCURSEL, 0, 0);
//播放选中项，改变播放状态。
Play(hwnd, iPlayListIndex);
//改变按钮显示文字
SetWindowText(hwndCtl, “暂停”);
}
else if(1 == iPlay)//正在播放
{
//暂停正在播放文件
mciSendString(“pause OpenMusicFile”, (LPTSTR)NULL, 0, NULL);
//改变播放状态
iPlay = 2;
//改变按钮显示文字
SetWindowText(hwndCtl, “播放”);
}
else//暂停
{
//恢复暂停播放文件
mciSendString(“play OpenMusicFile”, (LPTSTR)NULL, 0, NULL);
//改变播放状态
iPlay = 1;
//改变按钮显示文字
SetWindowText(hwndCtl, “暂停”);
}
break;
case IDC_BTNPREV://上一首
//获得上一首播放列表索引
iPlayListIndex = SendMessage(GetDlgItem(hwnd, IDC_LST1), LB_GETCURSEL, 0, 0) – 1;
if(iPlayListIndex >= 0)//索引在范围内
{
Play(hwnd, iPlayListIndex);
//设置上一首为选中项
SendMessage(GetDlgItem(hwnd, IDC_LST1), LB_SETCURSEL, iPlayListIndex, 0);
SetWindowText(GetDlgItem(hwnd, IDC_BTNPLAY), “暂停”);
}
break;
case IDC_BTNNEXT://下一首
iPlayListIndex = SendMessage(GetDlgItem(hwnd, IDC_LST1), LB_GETCURSEL, 0, 0) + 1;
if(iPlayListIndex < iNum) { Play(hwnd, iPlayListIndex); SendMessage(GetDlgItem(hwnd, IDC_LST1), LB_SETCURSEL, iPlayListIndex, 0); SetWindowText(GetDlgItem(hwnd, IDC_BTNPLAY), "暂停"); } break; case IDC_LST1://列表消息 switch(codeNotify) { case LBN_SELCHANGE://选中项改变 //获得选中项播放列表索引 int iChange = SendMessage(hwndCtl, LB_GETCURSEL, 0, 0); if(iChange != iPlayListIndex)//索引改变 { iPlay = 0;//新文件未播放 SetWindowText(GetDlgItem(hwnd, IDC_BTNPLAY), "播放"); } else//索引未改变 { iPlay = 1;//文件正在播放 SetWindowText(GetDlgItem(hwnd, IDC_BTNPLAY), "暂停"); } break; case LBN_DBLCLK://双击某项 iPlayListIndex = SendMessage(hwndCtl, LB_GETCURSEL, 0, 0); Play(hwnd, iPlayListIndex); SetWindowText(GetDlgItem(hwnd, IDC_BTNPLAY), "暂停"); break; default:break; } break; default:break; } } void Main_OnHScroll(HWND hwnd, HWND hwndCtl, UINT code, int pos)//固定格式? { if(hwndCtl == GetDlgItem(hwnd, IDC_TRBVOLUME)) SetVolume(hwnd); else SetPlayProcess(hwnd); } void OpenFiles(HWND hwnd) { OPENFILENAME ofn; TCHAR szOpenFileNames[80*MAX_PATH];//文件路径 TCHAR szPath[MAX_PATH];//基路径 TCHAR* p; ZeroMemory(&ofn, sizeof(ofn)); ofn.lStructSize = sizeof(ofn); ofn.lpstrFile = szOpenFileNames; ofn.lpstrFile[0] = '\0'; ofn.nMaxFile = sizeof(szOpenFileNames); ofn.lpstrFilter = TEXT("音乐文件(mp3、wma、wav)\0*.mp3;*.wma;*.wav\0所有文件(*.*)\0*.*\0"); ofn.Flags = OFN_EXPLORER | OFN_ALLOWMULTISELECT | OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST; if(GetOpenFileName(&ofn)) { //单个文件的保存形式为：绝对路径\0 //多个文件的保存形式为：基路径\000文件一\000文件二\0 //注意路径"\"的转义为"\\" //把路径复制到szPath //参考资料：http://blog.csdn.net/xuminggang/archive/2009/05/21/4206010.aspx lstrcpyn(szPath, szOpenFileNames, ofn.nFileOffset+1); //根据单个和多个文件不同的保存形式，多文件基路径需加"\\"。 szPath[ofn.nFileOffset-1] = '\\'; //把指针移到第一个文件 p = szOpenFileNames + ofn.nFileOffset; iPlayListIndex = iNum;//加入的第一个文件 while(*p) { lstrcat(szFileName[iNum], szPath); //基路径 lstrcat(szFileName[iNum], p); //基路径+文件=绝对路径 //加入列表 //ListBox参考：http://www.cnitblog.com/netssfy/archive/2007/06/12/28347.html SendMessage(GetDlgItem(hwnd, IDC_LST1), LB_ADDSTRING, 0, (LPARAM)p); p += lstrlen(p) +1; //移至下一个文件 iNum++; //增加音乐数，移动准备接收下一个文件路径。 } //设置选中项 SendMessage(GetDlgItem(hwnd, IDC_LST1), LB_SETCURSEL, (WPARAM)iPlayListIndex, 0); //播放选中项 Play(hwnd, iPlayListIndex); } } void Play(HWND hwnd, int iPlayListIndex) { TCHAR szMCIInfo[256]; //MCI操作返回信息 TCHAR szShortFileName[MAX_PATH]; //短文件名 ZeroMemory(szShortFileName, sizeof(szShortFileName)); //关闭正在播放的文件 //OpenMusicFile是通过MCI Command String中alias设置文件别名 mciSendString("close OpenMusicFile", szMCIInfo, sizeof(szMCIInfo), NULL); //参考：http://www.programfan.com/doc/vbapi/GetShortPathName.htm //http://topic.csdn.net/t/20060926/15/5049254.html //否则播放不了路径带空格的文件 GetShortPathName(szFileName[iPlayListIndex], szShortFileName, sizeof(szShortFileName)); //MCI Command String //参考：http://tieba.baidu.com/f?kz=26410588 TCHAR szCMD[2*MAX_PATH]; wsprintf(szCMD, "open %s alias OpenMusicFile", szShortFileName); //打开文件 mciSendString(szCMD, szMCIInfo, sizeof(szMCIInfo), NULL); //播放文件 mciSendString("play OpenMusicFile", szMCIInfo, sizeof(szMCIInfo), NULL); mciSendString("status OpenMusicFile length", szMCIInfo, sizeof(szMCIInfo), NULL);//szMCIInfo获得播放时长毫秒数 iLength = atoi(szMCIInfo)/1000;//播放时长秒数 //设置进度滚动条取值范围 SendMessage(GetDlgItem(hwnd, IDC_TRBPROCESS), TBM_SETRANGEMIN, TRUE, 0); SendMessage(GetDlgItem(hwnd, IDC_TRBPROCESS), TBM_SETRANGEMAX, TRUE, iLength); //设置定时器，更新进度滚动条。 SetTimer(hwnd, 1, 1000, PlayProcess); //设置音量 SetVolume(hwnd); //改变播放状态 iPlay = 1; //改变按钮显示文字 SetWindowText(GetDlgItem(hwnd, IDC_BTNPLAY), "暂停"); } void SetVolume(HWND hwnd) { //获得音量滚动体当前位置 int iVolume = SendMessage(GetDlgItem(hwnd, IDC_TRBVOLUME), TBM_GETPOS, 0, 0); //设置音量 TCHAR szVolume[256]; wsprintf(szVolume, "setaudio OpenMusicFile volume to %d", iVolume); mciSendString(szVolume, (LPTSTR)NULL, 0, 0); } void SetPlayProcess(HWND hwnd) { if(0 == iPlay)//未播放时不能拖动滚动条 SendMessage(GetDlgItem(hwnd, IDC_TRBPROCESS), TBM_SETPOS, TRUE, 0); else if(1 == iPlay)//只能在播放时拖动进度滚动条 { TCHAR szPlayProcess[256]; int iPosition = SendMessage(GetDlgItem(hwnd, IDC_TRBPROCESS), TBM_GETPOS, 0, 0)*1000;//拖动位置毫秒数 wsprintf(szPlayProcess, "play OpenMusicFile from %d", iPosition); mciSendString(szPlayProcess, (LPTSTR)NULL, 0, 0); } } void CALLBACK PlayProcess(HWND hwnd, UINT message, UINT iTimerID, DWORD dwTime) { TCHAR szMCIInfo[256];//MCI操作返回信息 mciSendString("status OpenMusicFile position", szMCIInfo, sizeof(szMCIInfo), NULL);//szMCIInfo获得播放当前位置毫秒数 int iPosition = atoi(szMCIInfo)/1000;//播放当前位置秒数 //更新播放时间 TCHAR* szBuffer; FormatTime(iLength, iPosition, szBuffer); SetWindowText(GetDlgItem(hwnd, IDC_STCTIME), szBuffer); SendMessage(GetDlgItem(hwnd, IDC_TRBPROCESS), TBM_SETPOS, TRUE, iPosition);//设置进度滚动条位置 if(iPosition == iLength)//结束 { mciSendString("close OpenMusicFile", (LPTSTR)NULL, 0, 0); iPlay = 0; SetWindowText(GetDlgItem(hwnd, IDC_BTNPLAY), TEXT("播放")); } } void FormatTime(int iLength, int iPosition, TCHAR* szBuffer) { int iLengthMinute, iLengthSecond, iPositionMinute, iPositionSecond; iLengthMinute = iLength/60;//总时长分钟 iLengthSecond = iLength-iLengthMinute*60;//总时长秒钟 iPositionMinute = iPosition/60;//当前时长分钟 iPositionSecond = iPosition - iPositionMinute*60;//当前时长秒钟 //显示 wsprintf(szBuffer, "%02d:%02d / %02d:%02d", iPositionMinute, iPositionSecond, iLengthMinute, iLengthSecond); } //文件夹选择对话框 //参考：http://blog.csdn.net/ShardowM/archive/2008/06/06/2516213.aspx //http://topic.csdn.net/t/20021103/14/1143060.html //http://www.programfan.com/blog/article.asp?id=19614 void SelectFolder(HWND hwnd) { LPMALLOC lpMalloc = NULL; if(SUCCEEDED(SHGetMalloc(&lpMalloc))) { TCHAR szPath[MAX_PATH]; BROWSEINFO bi; LPITEMIDLIST pidl; //LPBYTE pBuf = (LPBYTE)CoTaskMemAlloc(sizeof(bi)); ZeroMemory(&bi, sizeof(bi));//注意结构体的置零 bi.hwndOwner = hwnd; bi.pidlRoot = NULL; bi.pszDisplayName = szPath; bi.lpszTitle = TEXT("选择目录："); bi.ulFlags = BIF_RETURNONLYFSDIRS | BIF_BROWSEFORCOMPUTER; bi.lpfn = NULL; bi.lParam = 0; bi.iImage = 0; if((pidl = SHBrowseForFolder(&bi)) != NULL)//显示文件夹选择对话框并操作 { SHGetPathFromIDList(pidl, szPath);//转换文件夹路径 FindAllFile(hwnd, szPath, "*.mp3");//查找文件夹下mp3文件 FindAllFile(hwnd, szPath, "*.wma");//wma FindAllFile(hwnd, szPath, "*.wav");//wav //MessageBox(NULL, szPath, "", MB_OK); } //CoTaskMemFree(pBuf); lpMalloc->Free(pidl);
lpMalloc->Release();
}
}

//是否是根目录
//根目录路径如：F:\
//非根目录路径如：F:\Music
BOOL IsRoot(LPCTSTR lpszPath)
{
return 3 == lstrlen(lpszPath);
}

//遍历文件夹，找出指定后缀文件。
//参考：http://www.programfan.com/club/showpost.asp?id=18098
//http://hi.baidu.com/csuhkx/blog/item/cb66ff00d82bc610738b6521.html
void FindAllFile(HWND hwnd, LPCTSTR lpszPath, LPCTSTR lpszSuffix)
{
WIN32_FIND_DATA wfd;
TCHAR szPath[MAX_PATH];
lstrcpy(szPath, lpszPath);
if(!IsRoot(szPath))//非根目录加上”\\”
lstrcat(szPath, “\\”);
lstrcat(szPath, lpszSuffix);//加上后缀
HANDLE hFind = FindFirstFile(szPath, &wfd);
if(INVALID_HANDLE_VALUE == hFind)//未找到文件，返回。
return;
do
{
if(‘.’ == wfd.cFileName[0])
continue;
if(wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)//如果是目录，递归进入目录遍历。
{
if(IsRoot(lpszPath))//根目录
wsprintf(szPath, “%s%s”, lpszPath, wfd.cFileName);
else//非根目录
wsprintf(szPath, “%s\\%s”, lpszPath, wfd.cFileName);
FindAllFile(hwnd, szPath, lpszSuffix);
}
else
{
if(IsRoot(lpszPath))//根目录
wsprintf(szPath, “%s%s”, lpszPath, wfd.cFileName);
else//非根目录
wsprintf(szPath, “%s\\%s”, lpszPath, wfd.cFileName);
lstrcpy(szFileName[iNum++], szPath);
SendMessage(GetDlgItem(hwnd, IDC_LST1), LB_ADDSTRING, 0, (LPARAM)wfd.cFileName);
//MessageBox(NULL, szPath, “”, MB_OK);
}
}while(FindNextFile(hFind, &wfd));
FindClose(hFind);
iPlayListIndex = iNum-1;//加入的最后一个文件
//设置选中项
SendMessage(GetDlgItem(hwnd, IDC_LST1), LB_SETCURSEL, (WPARAM)iPlayListIndex, 0);
//播放选中项
Play(hwnd, iPlayListIndex);
}

MusicPlayer

This entry was posted on 星期三, 5 8 月, 2009 at 13:04 and is filed under Windows. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.

Comments are closed.