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Pascal/Delphi Source File  |  2001-09-10  |  1.6 KB  |  70 lines

  1. unit Canvas_Cone;
  2.  
  3. interface
  4.  
  5. uses
  6.   Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  7.   Base, StdCtrls, TeEngine, Series, ExtCtrls, TeeProcs, Chart, TeeTools;
  8.  
  9. type
  10.   TConesForm = class(TBaseForm)
  11.     Series1: TBarSeries;
  12.     Label1: TLabel;
  13.     ScrollBar1: TScrollBar;
  14.     Label2: TLabel;
  15.     ChartTool1: TRotateTool;
  16.     ComboBox1: TComboBox;
  17.     procedure ScrollBar1Change(Sender: TObject);
  18.     procedure Chart1AfterDraw(Sender: TObject);
  19.     procedure FormCreate(Sender: TObject);
  20.     procedure ComboBox1Change(Sender: TObject);
  21.     procedure FormShow(Sender: TObject);
  22.   private
  23.     { Private declarations }
  24.   public
  25.     { Public declarations }
  26.   end;
  27.  
  28. implementation
  29.  
  30. {$R *.DFM}
  31.  
  32. Uses TeCanvas;
  33.  
  34. procedure TConesForm.ScrollBar1Change(Sender: TObject);
  35. begin
  36.   TeeDefaultConePercent:=ScrollBar1.Position;
  37.   Label2.Caption:=IntToStr(ScrollBar1.Position)+'%';
  38.   Chart1.Repaint;
  39. end;
  40.  
  41. procedure TConesForm.Chart1AfterDraw(Sender: TObject);
  42. begin
  43.   With Chart1.Canvas do
  44.     Cone(True,30,30,80,50,0,20,True,ScrollBar1.Position);
  45. end;
  46.  
  47. procedure TConesForm.FormCreate(Sender: TObject);
  48. begin
  49.   inherited;
  50.   Series1.FillSampleValues(5);
  51. end;
  52.  
  53. procedure TConesForm.ComboBox1Change(Sender: TObject);
  54. begin
  55.   if ComboBox1.ItemIndex=0 then Series1.BarStyle:=bsCone
  56.                            else Series1.BarStyle:=bsPyramid;
  57.  
  58.   ScrollBar1.Enabled:=Series1.BarStyle=bsCone;
  59. end;
  60.  
  61. procedure TConesForm.FormShow(Sender: TObject);
  62. begin
  63.   inherited;
  64.   ComboBox1.ItemIndex:=0;
  65. end;
  66.  
  67. initialization
  68.   RegisterClass(TConesForm);
  69. end.
  70.