使用Windows消息控制Winamp

开心520201

开心520201

2016-02-19 15:46

有一种朋友不在生活里,却在生命力;有一种陪伴不在身边,却在心间。图老师即在大家的生活中又在身边。这么贴心的服务你感受到了吗?话不多说下面就和大家分享使用Windows消息控制Winamp吧。

  第一部分:得到Winamp的窗口

  Winamp是一个32位的Windows应用程序。也就是说,我们可以使用32位的Windows编程的一些基础技术来实现控制Winamp,即使用Windows的消息系统。在你给Winamp发送消息之前,你必须得到Winamp窗口的句柄。这里有个方法,使用外部应用程序(例如你自己编写的VB应用)就可以达到要求。

  

Public Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As LongDim hwndWinamp as longhwndWinamp = FindWindow("Winamp v1.x",vbNullString) 

  大家可能会注意到一点,为什么要使用类名"Winamp v1.x"来FindWindow呢?因为Winamp 1.x 和 2.x 的所有版本都是用"Winamp v1.x"这个class name的。

  第二部分:使用消息

  Winamp相应的三个消息:WM_USER,WM_COMMAND,和 WM_COPYDATA。WM_USER 和 WM_COPYDATA 允许你可以对Winamp进行一些高级的控制。而WM_COMMAND则可以做一些简单的操作,如暂停,播放,和跳到下一首音乐。

  1.WM_COMMAND 消息:

  Previous track button          40044

  Next track button            40048

  Play button               40045

  Pause/Unpause button          40046

  Stop button               40047

  Fadeout and stop            40147

  Stop after current track        40157

  Fast-forward 5 seconds         40148

  Fast-rewind 5 seconds          40144

  Start of playlist            40154

  Go to end of playlist          40158

  Open file dialog            40029

  Open URL dialog             40155

  Open file info box           40188

  Set time display mode to elapsed    40037

  Set time display mode to remaining   40038

  Toggle preferences screen        40012

  Open visualization options       40190

  Open visualization plug-in options   40191

  Execute current visualization plug-in  40192

  Toggle about box            40041

  Toggle title Autoscrolling       40189

  Toggle always on top          40019

  Toggle Windowshade           40064

  Toggle Playlist Windowshade       40266

  Toggle doublesize mode         40165

  Toggle EQ                40036

  Toggle playlist editor         40040

  Toggle main window visible       40258

  Toggle minibrowser           40298

  Toggle easymove             40186

  Raise volume by 1%           40058

  Lower volume by 1%           40059

  Toggle repeat              40022

  Toggle shuffle             40023

(本文来源于图老师网站,更多请访问http://m.tulaoshi.com/bianchengyuyan/)

  Open jump to time dialog        40193

  Open jump to file dialog        40194

  Open skin selector           40219

  Configure current visualization plug-in 40221

(本文来源于图老师网站,更多请访问http://m.tulaoshi.com/bianchengyuyan/)

  Reload the current skin         40291

  Close Winamp              40001

  Moves back 10 tracks in playlist    40197

  Show the edit bookmarks         40320

  Adds current track as a bookmark    40321

  Play audio CD              40323

  Load a preset from EQ          40253

  Save a preset to EQF          40254

  Opens load presets dialog        40172

  Opens auto-load presets dialog     40173

  Load default preset           40174

  Opens save preset dialog        40175

  Opens auto-load save preset       40176

  Opens delete preset dialog       40178

  Opens delete an auto load preset dialog 40180

  例程:控制Winamp暂停,播放,和跳到下一首音乐

  新建一个标准EXE工程,加入一个模块,在模块中加入代码----------

  

Option ExplicitPublic Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As LongPublic Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As LongConst WM_COMMAND = &H111Const IPC_WINAMP_NextTrackButton = 40048  '跳到下一首音乐Const IPC_WINAMP_PlayButton = 40045     '播放Const IPC_WINAMP_PauseUnpauseButton = 40046 '暂停Public hwndWinamp As Long          'Winamp的句柄Public Sub WinampPlay() '播放SendMessage hwndWinamp, WM_COMMAND, IPC_WINAMP_PlayButton, 0End SubPublic Sub WinampPause() '暂停SendMessage hwndWinamp, WM_COMMAND, IPC_WINAMP_PauseUnpauseButton, 0End SubPublic Sub WinampNext() '跳到下一首音乐SendMessage hwndWinamp, WM_COMMAND, IPC_WINAMP_NextTrackButton, 0End Sub

  在Form中加入的代码----------

  

Option ExplicitPrivate Sub cmdNext_Click()WinampNext '跳到下一首音乐End SubPrivate Sub cmdPause_Click()WinampPause '暂停End SubPrivate Sub cmdPlay_Click()WinampPlay '播放End SubPrivate Sub Form_Load()hwndWinamp = FindWindow("Winamp v1.x", vbNullString) '得到Winamp的句柄If hwndWinamp = 0 Then '判断Winamp是否运行  MsgBox "请启动Winamp先!"  Unload MeEnd IfEnd Sub

  2.WM_USER 消息:

  例程:得到Winamp的版本

  新建一个标准EXE工程,加入一个模块,在模块中加入代码----------

  

Option ExplicitPublic Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long'这是VB的API声明,不会返回正确的结果'Public Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long

  '这是正确的SendMessage声明,才能返回版本信息,读者可以参考一下两者的不同

  

Public Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long) As LongConst WM_USER = &H400Const WA_GETVERSION = 0Public hwndWinamp As Long          'Winamp的句柄Function WinampGetVersion() As StringDim VersionNum As LongDim ReturnVersion As StringVersionNum = SendMessage(hwndWinamp, WM_USER, 0, WA_GETVERSION)If Len(Hex(VersionNum))  3 Then  ReturnVersion = Left(Hex(VersionNum), 1) & "."  ReturnVersion = ReturnVersion & Mid(Hex(VersionNum), 2, 1)  ReturnVersion = ReturnVersion & Right$(Hex(VersionNum), Len(Hex(VersionNum)) - 3)  WinampGetVersion = ReturnVersionElse  WinampGetVersion = "UNKNOWN"End IfEnd Function

  在Form中加入的代码----------

  

Option ExplicitPrivate Sub Command1_Click()MsgBox "你的Winamp的版本是:" & WinampGetVersionEnd SubPrivate Sub Form_Load()hwndWinamp = FindWindow("Winamp v1.x", vbNullString) '得到Winamp的句柄If hwndWinamp = 0 Then '判断Winamp是否运行    MsgBox "请启动Winamp先!"    Unload MeEnd IfEnd Sub

  3.WM_COPYDATA 消息:

  例程:Winamp的运行时刻在播放列表中加入一首Mp3的歌曲

  新建一个标准EXE工程,加入一个模块,在模块中加入代码----------

  

Option ExplicitPublic Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As LongPrivate Declare Function lstrcpy Lib "kernel32" Alias "lstrcpyA" (ByVal lpString1 As String, ByVal lpString2 As String) As LongPrivate Declare Function CopyDataSendMessage Lib "user32" Alias "SendMessageA" (ByVal WndID As Long, ByVal wMsg As Long, ByVal wParam As Long, ByRef lParam As COPYDATASTRUCT) As LongPrivate Type COPYDATASTRUCT  dwData As Long  cbData As Long  lpData As LongEnd TypeConst IPC_PLAYFILE = 100Const WM_COPYDATA = &H4APublic hwndWinamp As LongPublic Sub WinampAddSong(SongName As String)Dim CDS As COPYDATASTRUCTWith CDS   .dwData = IPC_PLAYFILE   .cbData = 100   .lpData = lstrcpy(SongName, SongName)End WithCopyDataSendMessage hwndWinamp, WM_COPYDATA, 0&, CDSEnd Sub

  在Form中加入的代码----------

  

Option ExplicitPrivate Sub Command1_Click()WinampAddSong "I:Mp3周杰伦-简单爱.mp3" '加入一首歌End SubPrivate Sub Form_Load()hwndWinamp = FindWindow("Winamp v1.x", vbNullString) '得到Winamp的句柄If hwndWinamp = 0 Then '判断Winamp是否运行    MsgBox "请启动Winamp先!"    Unload MeEnd IfEnd Sub

  所有例程在 Win2000 + VB6 中调试通过

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