{******** unit1.pas ********}
unit unit1;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls, ExtCtrls, FileCtrl, MPlayer, MMSystem, Spin, ComCtrls;
type
TForm1 = class(TForm)
MediaPlayer1: TMediaPlayer;
DriveComboBox1: TDriveComboBox;
DirectoryListBox1: TDirectoryListBox;
FileListBox1: TFileListBox;
Panel1: TPanel;
CheckBox1: TCheckBox;
GroupBox2: TGroupBox;
TrackBar1: TTrackBar;
procedure FileListBox1DblClick(Sender: TObject);
procedure FileListBox1Click(Sender: TObject);
procedure MediaPlayer1Click(Sender: TObject; Button: TMPBtnType;
var DoDefault: Boolean);
procedure FormCreate(Sender: TObject);
procedure MediaPlayer1Notify(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure FormShow(Sender: TObject);
procedure TrackBar1Change(Sender: TObject);
function GetTrackBar: integer;
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
pCurrentVolumeLevel: PDWord;
CurrentVolumeLevel: DWord;
VolumeControlHandle: hWnd;
implementation
{$R *.DFM}
procedure TForm1.FileListBox1DblClick(Sender: TObject);
begin
if checkbox1.checked then
mediaplayer1.DisplayRect := Rect(0,0, Panel1.Width, Panel1.Height);
mediaplayer1.play;
end;
procedure TForm1.FileListBox1Click(Sender: TObject);
begin
mediaplayer1.filename := FileListBox1.items[filelistbox1.itemindex];
mediaplayer1.open;
end;
procedure TForm1.MediaPlayer1Click(Sender: TObject; Button: TMPBtnType;
var DoDefault: Boolean);
begin
case Button of
btPlay :
if checkbox1.checked then
mediaplayer1.DisplayRect := Rect(0,0, Panel1.Width, Panel1.Height);
end;
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
DirectoryListBox1.Directory := 'd:\sound';
mediaplayer1.notify := true;
New(pCurrentVolumeLevel);
end;
procedure TForm1.MediaPlayer1Notify(Sender: TObject);
begin
Panel1.refresh;
with Mediaplayer1 do
if NotifyValue = nvAborted then begin
filename := FileListBox1.items[filelistbox1.itemindex];
open;
end;
end;
procedure TForm1.FormDestroy(Sender: TObject);
begin
dispose(pCurrentVolumeLevel);
end;
function TForm1.GetTrackBar: integer;
begin
result := 65535 div Trackbar1.max;
end;
procedure TForm1.FormShow(Sender: TObject);
begin
VolumeControlHandle := FindWindow('Volume Control', nil);
WaveOutGetVolume(VolumeControlHandle, pCurrentVolumeLevel);
CurrentVolumeLevel := pCurrentVolumeLevel^;
Trackbar1.position := LoWord(CurrentVolumeLevel) DIV GetTrackBar;
end;
procedure TForm1.TrackBar1Change(Sender: TObject);
begin
CurrentVolumeLevel := Trackbar1.position * GetTrackBar shl 16;
CurrentVolumeLevel := CurrentVolumeLevel + (Trackbar1.position * GetTrackBar);
if WaveOutSetVolume(VolumeControlHandle, CurrentVolumeLevel) <> 0 then
ShowMessage('Cannot adjust Volume.');
end;
end.
{********** unit1.dfm *********}
object Form1: TForm1
Left = 202
Top = 109
Width = 402
Height = 321
ActiveControl = DriveComboBox1
BorderIcons = [biSystemMenu]
Caption = 'Mediaplayer Example - Created using Delphi 2.0'
Font.Color = clWindowText
Font.Height = -11
Font.Name = 'MS Sans Serif'
Font.Style = []
Icon.Data = {
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80000000FF0000FF000000FFFF00FF000000FF00FF00FFFF0000FFFFFF008888
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8888888888880000FEEFEFF00008888888888888888807700000000070088888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}
OnCreate = FormCreate
OnDestroy = FormDestroy
OnShow = FormShow
PixelsPerInch = 96
TextHeight = 13
object MediaPlayer1: TMediaPlayer
Left = 152
Top = 240
Width = 141
Height = 33
VisibleButtons = [btPlay, btPause, btStop, btPrev, btBack]
Display = Panel1
ParentShowHint = False
ShowHint = True
TabOrder = 0
OnClick = MediaPlayer1Click
OnNotify = MediaPlayer1Notify
end
object DriveComboBox1: TDriveComboBox
Left = 0
Top = 0
Width = 145
Height = 19
DirList = DirectoryListBox1
TabOrder = 1
end
object DirectoryListBox1: TDirectoryListBox
Left = 0
Top = 22
Width = 145
Height = 114
FileList = FileListBox1
ItemHeight = 16
TabOrder = 2
end
object FileListBox1: TFileListBox
Left = 0
Top = 139
Width = 145
Height = 141
ItemHeight = 13
Mask = '*.wav;*.avi'
MultiSelect = True
TabOrder = 3
OnClick = FileListBox1Click
OnDblClick = FileListBox1DblClick
end
object Panel1: TPanel
Left = 152
Top = 8
Width = 241
Height = 225
TabOrder = 4
end
object CheckBox1: TCheckBox
Left = 218
Top = 275
Width = 76
Height = 17
Caption = 'Stretch AVI'
State = cbChecked
TabOrder = 5
end
object GroupBox2: TGroupBox
Left = 296
Top = 234
Width = 97
Height = 53
Caption = 'Volume'
TabOrder = 6
object TrackBar1: TTrackBar
Left = 2
Top = 11
Width = 93
Height = 34
Max = 26
Orientation = trHorizontal
ParentShowHint = False
Frequency = 1
Position = 0
SelEnd = 0
SelStart = 0
ShowHint = True
TabOrder = 0
TickMarks = tmBoth
TickStyle = tsAuto
OnChange = TrackBar1Change
end
end
end