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[Files]
Source: Files\BASS.dll; DestDir: {tmp}; Flags: dontcopy noencryption
Source: Files\sound.mp3; DestDir: {tmp}; Flags: dontcopy noencryption nocompression
Source: Files\MusicButton.bmp; DestDir: {tmp}; Flags: dontcopy


[code]
const
BASS_ACTIVE_STOPPED = 0;
BASS_ACTIVE_PLAYING = 1;
BASS_ACTIVE_STALLED = 2;
BASS_ACTIVE_PAUSED = 3;
BASS_SAMPLE_LOOP = 4;

var
mp3Handle: HWND;
mp3Name: String;
PlayButton, PauseButton, StopButton: TPanel;
PlayImage, PauseImage, StopImage: TBitmapImage;
PlayLabel, PauseLabel, StopLabel: TLabel;
MouseLabel: Tlabel;

function BASS_Init(device: Integer; freq, flags: DWORD; win: hwnd; CLSID: Integer): Boolean;
external 'BASS_Init@files:BASS.dll stdcall delayload';

function BASS_StreamCreateFile(mem: BOOL; f: PAnsiChar; offset: DWORD; length: DWORD; flags: DWORD): DWORD;
external 'BASS_StreamCreateFile@files:BASS.dll stdcall delayload';

function BASS_Start(): Boolean;
external 'BASS_Start@files:BASS.dll stdcall delayload';

function BASS_ChannelPlay(handle: DWORD; restart: BOOL): Boolean;
external 'BASS_ChannelPlay@files:BASS.dll stdcall delayload';

function BASS_ChannelIsActive(handle: DWORD): Integer;
external 'BASS_ChannelIsActive@files:BASS.dll stdcall delayload';

function BASS_ChannelPause(handle: DWORD): Boolean;
external 'BASS_ChannelPause@files:BASS.dll stdcall delayload';

function BASS_Stop(): Boolean;
external 'BASS_Stop@files:BASS.dll stdcall delayload';

function BASS_Pause(): Boolean;
external 'BASS_Pause@files:BASS.dll stdcall delayload';

function BASS_Free(): Boolean;
external 'BASS_Free@files:BASS.dll stdcall delayload';

procedure PlayMouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
PlayImage.Left := -96
end;

procedure PlayMouseUp(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
PlayImage.Left := 0
end;

procedure PlayMouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
begin
if PlayImage.Left <> -96 then PlayImage.Left := -192 ;
StopImage.Left := -64
end;

procedure PauseMouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
PauseImage.Left := -128
end;

procedure PauseMouseUp(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
PauseImage.Left := -32
end;

procedure PauseMouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
begin
if PauseImage.Left <> -128 then PauseImage.Left := -224;
StopImage.Left := -64
end;

procedure StopMouseDown(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
StopImage.Left := -160
end;

procedure StopMouseUp(Sender: TObject; Button: TMouseButton; Shift: TShiftState; X, Y: Integer);
begin
StopImage.Left := -64
end;

procedure StopMouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
begin
if StopImage.Left <> -160 then StopImage.Left := -256;
PlayImage.Left := 0
PauseImage.Left := -32
end;

procedure MouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
begin
PlayImage.Left := 0
PauseImage.Left := -32
StopImage.Left := -64
end;

function InitializeSetup(): Boolean;
begin
ExtractTemporaryFile('BASS.dll');
ExtractTemporaryFile('sound.mp3');
mp3Name := ExpandConstant('{tmp}\sound.mp3');
BASS_Init(-1, 44100, 0, 0, 0);
mp3Handle := BASS_StreamCreateFile(FALSE, PAnsiChar(mp3Name), 0, 0, BASS_SAMPLE_LOOP);
BASS_Start();
BASS_ChannelPlay(mp3Handle, False);
Result := True;
end;

procedure PlayButtonOnClick(Sender: TObject);
begin
case BASS_ChannelIsActive(mp3Handle) of
BASS_ACTIVE_PAUSED:
begin
BASS_ChannelPlay(mp3Handle, False);
PlayButton.Hide
PauseButton.Show
end;
BASS_ACTIVE_STOPPED:
begin
BASS_Init(-1, 44100, 0, 0, 0);
mp3Handle := BASS_StreamCreateFile(FALSE, PAnsiChar(mp3Name), 0, 0, BASS_SAMPLE_LOOP);
BASS_Start();
BASS_ChannelPlay(mp3Handle, False);
PlayButton.Hide
PauseButton.Show
end;
end;
end;

procedure PauseButtonOnClick(Sender: TObject);
begin
BASS_ChannelPause(mp3Handle);
PauseButton.Hide
PlayButton.Show
end;

procedure StopButtonOnClick(Sender: TObject);
begin
BASS_Stop();
BASS_Free();
PauseButton.Hide
PlayButton.Show
end;

procedure Music();
begin
ExtractTemporaryFile('MusicButton.bmp')

MouseLabel := TLabel.Create(WizardForm)
MouseLabel.Width := WizardForm.Width
MouseLabel.Height := WizardForm.Height
MouseLabel.Autosize := False
MouseLabel.Transparent := True
MouseLabel.OnMouseMove := @MouseMove
MouseLabel.Parent := WizardForm

PlayButton := TPanel.Create(WizardForm)
PlayButton.Left := 465
PlayButton.Top := 64
PlayButton.Width := 23
PlayButton.Height := 23
PlayButton.Cursor := crHand
PlayButton.ShowHint := True
PlayButton.Hint := 'Âîñïðîèçâåäåíèå ìóçûêè'
PlayButton.OnClick := @PlayButtonOnClick
PlayButton.Parent := WizardForm

PlayImage := TBitmapImage.Create(WizardForm)
PlayImage.Left := 0
PlayImage.Top := 0
PlayImage.Width := 288
PlayImage.Height := 23
PlayImage.Enabled := False
PlayImage.Bitmap.LoadFromFile(ExpandConstant('{tmp}\MusicButton.bmp'))
PlayImage.Parent := PlayButton
//
PlayImage.ReplaceColor:=$E2E2E2
PlayImage.ReplaceWithColor:=clBtnFace


PlayLabel := TLabel.Create(WizardForm)
PlayLabel.Width := PlayButton.Width
PlayLabel.Height := PlayButton.Height
PlayLabel.Autosize := False
PlayLabel.Transparent := True
PlayLabel.OnClick := @PlayButtonOnClick
PlayLabel.OnMouseDown := @PlayMouseDown
PlayLabel.OnMouseUp := @PlayMouseUp
PlayLabel.OnMouseMove := @PlayMouseMove
PlayLabel.Parent := PlayButton

PauseButton := TPanel.Create(WizardForm)
PauseButton.Left := 465
PauseButton.Top := 64
PauseButton.Width := 23
PauseButton.Height := 23
PauseButton.Cursor := crHand
PauseButton.ShowHint := True
PauseButton.Hint := 'Ïðèîñòàíîâèòü ìóçûêó'
PauseButton.OnClick := @PauseButtonOnClick
PauseButton.Parent := WizardForm

PauseImage := TBitmapImage.Create(WizardForm)
PauseImage.Left := -32
PauseImage.Top := 0
PauseImage.Width := 288
PauseImage.Height := 23
PauseImage.Enabled := False
PauseImage.Bitmap.LoadFromFile(ExpandConstant('{tmp}\MusicButton.bmp'))
PauseImage.Parent := PauseButton
//
PauseImage.ReplaceColor:=$E2E2E2
PauseImage.ReplaceWithColor:=clBtnFace

PauseLabel := TLabel.Create(WizardForm)
PauseLabel.Width := PauseButton.Width
PauseLabel.Height := PauseButton.Height
PauseLabel.Autosize := False
PauseLabel.Transparent := True
PauseLabel.OnClick := @PauseButtonOnClick
PauseLabel.OnMouseDown := @PauseMouseDown
PauseLabel.OnMouseUp := @PauseMouseUp
PauseLabel.OnMouseMove := @PauseMouseMove
PauseLabel.Parent := PauseButton

StopButton := TPanel.Create(WizardForm)
StopButton.Left := 82
StopButton.Top := 320
StopButton.Width := 32
StopButton.Height := 33
StopButton.Cursor := crHand
StopButton.ShowHint := True
StopButton.Hint := 'Îñòàíîâèòü ìóçûêó'
StopButton.OnClick := @StopButtonOnClick
StopButton.Parent := WizardForm
StopButton.hide;

StopImage := TBitmapImage.Create(WizardForm)
StopImage.Left := -64
StopImage.Top := 0
StopImage.Width := 288
StopImage.Height := 33
StopImage.Enabled := False
StopImage.Bitmap.LoadFromFile(ExpandConstant('{tmp}\MusicButton.bmp'))
StopImage.Parent := StopButton
StopImage.hide;

StopImage.ReplaceColor:=$E2E2E2
StopImage.ReplaceWithColor:=clBtnFace

StopLabel := TLabel.Create(WizardForm)
StopLabel.Width := StopButton.Width
StopLabel.Height := StopButton.Height
StopLabel.Autosize := False
StopLabel.Transparent := True
StopLabel.OnClick := @StopButtonOnClick
StopLabel.OnMouseDown := @StopMouseDown
StopLabel.OnMouseUp := @StopMouseUp
StopLabel.OnMouseMove := @StopMouseMove
StopLabel.Parent := StopButton
StopLabel.hide;
end;

procedure DeinitializeSetup();
begin
BASS_Stop();
BASS_Free();
end;