uses Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, Printers, ExtCtrls, StdCtrls;

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1 Delphi Grundkurs Seite 69 Beispiel 19 Quadrate Problem: Programm P19 (\Grafikbeispiele) Eingabe: Anzahl der Quadrate (= N) mit InputBox (0,0) d d a Verschiebungsteil d := a div N; Formulardesign: a (a,a) Listing: unit P19_U; // Quadrate zeichnen interface uses Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, Printers, ExtCtrls, StdCtrls; type

Formulardesign: a (a,a) Listing: unit P19_U; // Quadrate zeichnen interface uses Windows,

2 Delphi Grundkurs Seite 70 TForm1 = class(tform) Image1 : TImage; Button1: TButton; // Eingabe Button2: TButton; // Ausführen Button3: TButton; // Drucken Button4: TButton; // Beenden Bevel1 : TBevel; procedure FormActivate(Sender: TObject); procedure Button1Click(Sender: TObject); procedure Button2Click(Sender: TObject); procedure Button3Click(Sender: TObject); procedure Button4Click(Sender: TObject); private { Private-Deklarationen } public { Public-Deklarationen } var Form1: TForm1; implementation {$R *.DFM} var a, // Quadratseite N, // Anzahl der Quadrate d : Integer; // d = a div N procedure ImClear; // Löscht das Image with Form1.Image1 do Canvas.Pen.Color := clblack; Canvas.Brush.Color := clwhite; Canvas.Brush.Style := bssolid; Canvas.Rectangle(0,0,a,a); Canvas.Brush.Style := bsclear; procedure TForm1.FormActivate(Sender: TObject); // Image initialisieren with Image1 do if Width > Height then Height := Width; a := Width; end else Width := Height; a := Height;

TObject); private { Private-Deklarationen } public { Public-Deklarationen } var Form1: TForm1; implementation {$R *.

3 Delphi Grundkurs Seite 71 ImClear; procedure TForm1.Button1Click(Sender: TObject); // Anzahl N der Quadrate eingeben var S : String; Code : Integer; ImClear; S := InputBox('Eingabe', 'Anzahl: ', '10'); Val(S,N,Code); if (Code <> 0) or (N < 0) or (Frac(N) <> 0) then ShowMessage('Falsche Eingabe!'); Exit; procedure TForm1.Button2Click(Sender: TObject); // Quadrate zeichnen var I : Integer; d := Round(a div N); for I := 1 to N-1 do with Image1.Canvas do MoveTo(d*I,0); LineTo(a,d*I); LineTo(a-d*I,a); LineTo(0,a-d*I); LineTo(d*I,0); procedure TForm1.Button3Click(Sender: TObject); // Formular ausdrucken PrintScale := poproportional; Print; procedure TForm1.Button4Click(Sender: TObject); // Programm beenden Application.Terminate; end.

(N < 0) or (Frac(N) <> 0) then ShowMessage('Falsche Eingabe!'); Exit; procedure TForm1.

4 Delphi Grundkurs Seite 72 Beispiel 20 Farbdemo Problem: Programm P20 (\Grafikbeispiele) 1. Kreissektor zeichnen (in Formular) (X1,Y1) (X4,Y4) Winkel b a (M.X,M.Y) (X3,Y3) Radius (X2,Y2) M.X := Width div 2; X1 := M.X Radius; M.Y := Height div 2; Y1 := M.Y Radius; RMax :=Height div 2; X2 := M.X + Radius; a := Round(Radius*Cos(Winkel*PI/180)); Y2 := M.Y + Radius; b := Round(Radius*Sin(Winkel*PI/180)); X3 := M.X + Radius; Y3 := M.Y; X4 := M.X + a; Y4 := M.Y b; pie(x1,y1,x2,y2,x3,y3,x4,y4); Formulardesign: 2. Radius, Zentriwinkel, Rot, Grün, Blau über ScrollBars verändern.

Y := Height div 2; Y1 := M.Y Radius; RMax :=Height div 2; X2 := M.X + Radius; a := Round(Radius*Cos(Winkel*PI/180)); Y2 := M.

5 Delphi Grundkurs Seite 73 Listing: unit P20_U; // Farbdemo interface uses Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls, ExtCtrls; type TForm1 = class(tform) Label1 : TLabel; // Beschriftungen Label2 : TLabel; Label3 : TLabel; Label4 : TLabel; Label5 : TLabel; ScrollBar1: TScrollBar; // Radius verändern ScrollBar2: TScrollBar; // Zentriwinkel verändern ScrollBar3: TScrollBar; // Rotwert verändern ScrollBar4: TScrollBar; // Grünwert verändern ScrollBar5: TScrollBar; // Blauwert verändern Panel1 : TPanel; // Radis anzeigen Panel2 : TPanel; // Zentriwinkel anzeigen Panel3 : TPanel; // Rotwert anzeigen Panel4 : TPanel; // Grünwert anzeigen Panel5 : TPanel; // Blauwert anzeigen Button1 : TButton; // Beenden procedure FormActivate(Sender: TObject); procedure ScrollBar1Scroll(Sender: TObject; ScrollCode: TScrollCode; procedure ScrollBar2Scroll(Sender: TObject; ScrollCode: TScrollCode; procedure ScrollBar3Scroll(Sender: TObject; ScrollCode: TScrollCode; procedure ScrollBar4Scroll(Sender: TObject; ScrollCode: TScrollCode; procedure ScrollBar5Scroll(Sender: TObject; ScrollCode: TScrollCode; procedure Button1Click(Sender: TObject); private { Private declarations } public { Public declarations } var Form1: TForm1; implementation {$R *.DFM} var M : TPoint; // Kreismittelpunkt RMax : Integer; // maximaler Radius

ScrollBar3: TScrollBar; // Rotwert verändern ScrollBar4: TScrollBar; // Grünwert verändern ScrollBar5: TScrollBar; // Blauwert verändern Panel1 : TPanel; // Radis anzeigen Panel2 : TPanel; //

6 Delphi Grundkurs Seite 74 Radius, // aktueller Kreisradius Winkel : Integer; // aktueller Zentriwinkel R, G, B : Byte; // Rot, Grün, Blau Farbe, // aktuelle Farbe FFarbe : TColor; // Farbe Formular procedure TForm1.FormActivate(Sender: TObject); // Initialisieren WindowState := wsmaximized; Form1.Scaled := True; if (Screen.Width<>800) then Form1.ScaleBy(Screen.Width, 800); M.X := Width div 2; M.Y := Height div 2; // ursprünglich div 3 RMax := Height div 2; // ursprünglich div 3 Scrollbar1.Max := RMax; Label1.Caption := 'Radius (0 - '+IntToStr(RMax)+')'; R := 0; G := 0; B := 0; Radius := RMax; Winkel := 360; procedure KreisSektor(var M : TPoint; Radius, Winkel : Integer; Farbe : TColor); // Kreissektor zeichnen var X1, Y1, X2, Y2, X3, Y3, X4, Y4 : Integer; X1 := M.X - Radius; Y1 := M.Y - Radius; X2 := M.X + Radius; Y2 := M.Y + Radius; X3 := M.X + Radius; Y3 := M.Y; X4 := M.X + Round(Radius*Cos(Winkel*Pi/180)); Y4 := M.Y - Round(Radius*Sin(Winkel*PI/180)); with Form1.Canvas do Pen.Color := Farbe; Brush.Color := Farbe; Brush.Style := bssolid; if Winkel > 0 then pie(x1, Y1, X2, Y2, X3, Y3, X4, Y4); procedure TForm1.ScrollBar1Scroll(Sender: TObject; ScrollCode: TScrollCode; // Kreisradius verändern FFarbe := Form1.Color; KreisSektor(M, RMax, 360, FFarbe); Radius := ScrollPos; Panel1.Caption := IntToStr(Radius);

Y := Height div 2; // ursprünglich div 3 RMax := Height div 2; // ursprünglich div 3 Scrollbar1.Max := RMax; Label1.

7 Delphi Grundkurs Seite 75 procedure TForm1.ScrollBar2Scroll(Sender: TObject; ScrollCode: TScrollCode; // Zentriwinkel verändern FFarbe := Form1.Color; KreisSektor(M, RMax, 360, FFarbe); Winkel := ScrollPos; Panel2.Caption := IntToStr(Winkel); procedure TForm1.ScrollBar3Scroll(Sender: TObject; ScrollCode: TScrollCode; // Rotwert verändern R := ScrollPos; Panel3.Caption := IntToStr(R); Farbe := RGB(R, G, B); procedure TForm1.ScrollBar4Scroll(Sender: TObject; ScrollCode: TScrollCode; // Grünwert verändern G := ScrollPos; Panel4.Caption := IntToStr(G); Farbe := RGB(R, G, B); procedure TForm1.ScrollBar5Scroll(Sender: TObject; ScrollCode: TScrollCode; // Blauwert verändern B := ScrollPos; Panel5.Caption := IntToStr(B); Farbe := RGB(R, G, B); procedure TForm1.Button1Click(Sender: TObject); // Programm beenden Application.Terminate; end.

ScrollBar3Scroll(Sender: TObject; ScrollCode: TScrollCode; // Rotwert verändern R := ScrollPos; Panel3.Caption := IntToStr(R); Farbe := RGB(R, G, B); procedure TForm1.

Introduction to the DLL for the USB Experiment Interface Board K8055

K8055D.DLL 1 Introduction to the DLL for the USB Experiment Interface Board K8055 The K8055 interface board has 5 digital input channels and 8 digital output channels. In addition, there are two analogue