u_form1.pas

来自「很好地delphi书籍源码」· PAS 代码 · 共 58 行

unit U_Form1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, FCurve;

type
  TForm1 = class(TForm)
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    FunctionCurve1: TFunctionCurve;
    FunctionCurve2: TFunctionCurve;
    FunctionCurve3: TFunctionCurve;
    FunctionCurve4: TFunctionCurve;
    procedure FunctionCurve1UserFunc(X: Real; var Y: Single);
    procedure FunctionCurve2UserFunc(X: Real; var Y: Single);
    procedure FunctionCurve3UserFunc(X: Real; var Y: Single);
    procedure FunctionCurve4UserFunc(X: Real; var Y: Single);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}


procedure TForm1.FunctionCurve1UserFunc(X: Real; var Y: Single);
begin
  Y:=X*X;
end;

procedure TForm1.FunctionCurve2UserFunc(X: Real; var Y: Single);
begin
  Y:=Sin(2*X*X+X);
end;

procedure TForm1.FunctionCurve3UserFunc(X: Real; var Y: Single);
begin
    Y:=Sqrt(X);
end;

procedure TForm1.FunctionCurve4UserFunc(X: Real; var Y: Single);
begin
  Y:=X;
end;

end.