Inno Setup 是开源免费的安装包构建软件，支持脚本编程可扩展性非常强悍。除了常见的向导式安装界面外，我们可以通过使用第三方开发的插件高度自定义化安装向导界面。现在很多大厂的安装包有些是使用 Nsis 制作的安装包，有些是采用 Inno Setup 制作的安装包。今天大眼仔旭和大家一起分享的是为您的 Inno Setup 安装包增加背景音乐及播放控制功能，该版本主要使用了 Bass.dll 的音乐播放模块进行调用即可实现。

Inoo Setup 背景音乐播放示例

Inoo Setup 增加背景音乐播放和暂停继续按钮解决方案：

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[Setup]

AppName=Bass Audio Project

AppVersion=1.0

DefaultDirName={pf}\Bass Audio Project

AppPublisher=大眼仔~旭（Anan）

AppPublisherURL=http://www.dayanzai.me

AppSupportURL=http://www.dayanzai.me



[Messages]

BeveledLabel=大眼仔~旭感情无限公司（Anan）国际



[Files]

Source: Bass.dll; Flags: dontcopy

Source: AudioFile.mp3; Flags: dontcopy



[Code]

const

  BASS_SAMPLE_LOOP = 4;

  BASS_ACTIVE_STOPPED = 0;

  BASS_ACTIVE_PLAYING = 1;

  BASS_ACTIVE_STALLED = 2;

  BASS_ACTIVE_PAUSED  = 3;

  BASS_UNICODE = $80000000;

  BASS_CONFIG_GVOL_STREAM = 5;

const

  #ifndef UNICODE

    EncodingFlag = 0;

  #else

    EncodingFlag = BASS_UNICODE;

  #endif

type

  HSTREAM = DWORD;



function BASS_Init(device: LongInt; freq, flags: DWORD;

  win: HWND; clsid: Cardinal): Boolean;

  external 'BASS_Init@files:bass.dll stdcall';

function BASS_StreamCreateFile(mem: Boolean; f: string; offset1: DWORD;

  offset2: DWORD; length1: DWORD; length2: DWORD; flags: DWORD): HSTREAM;

  external 'BASS_StreamCreateFile@files:bass.dll stdcall';

function BASS_ChannelPlay(handle: DWORD; restart: Boolean): Boolean;

  external 'BASS_ChannelPlay@files:bass.dll stdcall';

function BASS_ChannelPause(handle: DWORD): Boolean;

  external 'BASS_ChannelPause@files:bass.dll stdcall';

function BASS_SetConfig(option: DWORD; value: DWORD ): Boolean;

  external 'BASS_SetConfig@files:bass.dll stdcall';

function BASS_ChannelIsActive(handle: DWORD): DWORD;

  external 'BASS_ChannelIsActive@files:bass.dll stdcall';



var

  SoundStream: HSTREAM;

  PauseResumePlayButton: TNewButton;

  StopButton: TNewButton;



procedure ResumeButtonClick(Sender: TObject); forward;



procedure PauseButtonClick(Sender: TObject);

begin

  if BASS_ChannelPause(SoundStream) then

  begin

    PauseResumePlayButton.Caption := '继续';

    PauseResumePlayButton.OnClick := @ResumeButtonClick;

  end;

end;



procedure ResumeButtonClick(Sender: TObject);

begin

  if BASS_ChannelPlay(SoundStream, False) then

  begin

    PauseResumePlayButton.Caption := '暂停';

    PauseResumePlayButton.OnClick := @PauseButtonClick;

  end;

end;



procedure PlayButtonClick(Sender: TObject);

begin

  if BASS_ChannelPlay(SoundStream, True) then

  begin

    PauseResumePlayButton.Caption := '暂停';

    PauseResumePlayButton.OnClick := @PauseButtonClick;

  end;

end;



procedure StopButtonClick(Sender: TObject);

begin

  if (BASS_ChannelIsActive(SoundStream) = BASS_ACTIVE_PAUSED) or

     BASS_ChannelPause(SoundStream) then

  begin

    PauseResumePlayButton.Caption := '播放';

    PauseResumePlayButton.OnClick := @PlayButtonClick;

  end;

end;



procedure InitializeWizard();

begin

  if BASS_Init(-1, 44100, 0, 0, 0) then

  begin

    ExtractTemporaryFile('AudioFile.mp3');

    SoundStream :=

      BASS_StreamCreateFile(

        False, ExpandConstant('{tmp}\AudioFile.mp3'), 0, 0, 0, 0,

        EncodingFlag or BASS_SAMPLE_LOOP);



    if SoundStream <> 0 then

    begin

      BASS_SetConfig(BASS_CONFIG_GVOL_STREAM, 2500);



      if BASS_ChannelPlay(SoundStream, False) then

      begin

        StopButton := TNewButton.Create(WizardForm);

        StopButton.Parent := WizardForm;

        StopButton.Left :=

          WizardForm.ClientWidth -

          WizardForm.CancelButton.Left -  WizardForm.CancelButton.Width;

        StopButton.Top := WizardForm.CancelButton.Top;

        StopButton.Width :=  WizardForm.CancelButton.Width;

        StopButton.Height := WizardForm.CancelButton.Height;

        StopButton.Caption := '停止';

        StopButton.OnClick := @StopButtonClick;



        PauseResumePlayButton := TNewButton.Create(WizardForm);

        PauseResumePlayButton.Parent := WizardForm;

        PauseResumePlayButton.Left :=

          WizardForm.ClientWidth -

          WizardForm.NextButton.Left -  WizardForm.NextButton.Width;

        PauseResumePlayButton.Top := WizardForm.CancelButton.Top;

        PauseResumePlayButton.Width :=  WizardForm.CancelButton.Width;

        PauseResumePlayButton.Height := WizardForm.CancelButton.Height;

        PauseResumePlayButton.Caption := '暂停';

        PauseResumePlayButton.OnClick := @PauseButtonClick;

      end;

    end;

  end;

end;

结尾大眼仔还给大家提供了 Inno Setup 源代码下载，音乐文件或者音频文件名称大家可以根据自己的需要进行修改即可。

资源：440.rar
解压密码：www.dayanzai.me
转载请保留出处，谢谢合作~
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