72 lines
1.4 KiB
ObjectPascal
72 lines
1.4 KiB
ObjectPascal
unit uMain;
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interface
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uses
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Winapi.Windows, System.SysUtils, System.Classes, Vcl.Controls, Vcl.Forms,
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Vcl.ExtCtrls, Vcl.StdCtrls;
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type
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TForm1 = class(TForm)
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tmr1: TTimer;
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lblPosition: TLabel;
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procedure tmr1Timer(Sender: TObject);
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procedure FormPaint(Sender: TObject);
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private
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{ Private declarations }
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public
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{ Public declarations }
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procedure DrawCrosshair(X, Y: Integer);
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end;
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var
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Form1: TForm1;
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X: Integer = 0;
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Y: Integer = 0;
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implementation
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uses
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mmSystem, Vcl.Graphics;
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{$R *.dfm}
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procedure TForm1.DrawCrosshair(X, Y: Integer);
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const
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RADIUS = 10;
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CROSS = 3;
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begin
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Canvas.Brush.Color := clblack;
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Canvas.FillRect(ClientRect);
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with Canvas do
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begin
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Pen.Color := clWhite;
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pen.Width := 1;
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Ellipse(X - RADIUS, Y - RADIUS, X + RADIUS, Y + RADIUS);
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pen.Width := 2;
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MoveTo(X - CROSS * RADIUS, Y);
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LineTo(X + CROSS * RADIUS, Y);
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MoveTo(X, Y - CROSS * RADIUS);
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LineTo(X, Y + CROSS * RADIUS);
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end;
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end;
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procedure TForm1.FormPaint(Sender: TObject);
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begin
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DrawCrosshair(X, Y);
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end;
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procedure TForm1.tmr1Timer(Sender: TObject);
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var
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info: TJoyInfo;
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begin
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if (joyGetPos(0, @info) = 0) then
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begin
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X := Round(ClientWidth * info.wXpos / MAXWORD);
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Y := Round(ClientHeight * info.wYpos / MAXWORD);
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lblPosition.Caption := Format('(%3d,%3d)', [X, Y]);
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Invalidate;
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end;
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end;
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end.
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