You've already forked lazarus-ccr
819af1d403
git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@7886 8e941d3f-bd1b-0410-a28a-d453659cc2b4
80 lines
1.6 KiB
ObjectPascal
80 lines
1.6 KiB
ObjectPascal
unit RelChangeUnit;
|
|
|
|
{$mode objfpc}{$H+}
|
|
|
|
interface
|
|
|
|
uses
|
|
Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
|
|
StdCtrls, contexthelpunit;
|
|
|
|
type
|
|
|
|
{ TRelChangeFrm }
|
|
|
|
TRelChangeFrm = class(TForm)
|
|
HelpBtn: TButton;
|
|
ResetBtn: TButton;
|
|
CancelBtn: TButton;
|
|
ComputeBtn: TButton;
|
|
ReturnBtn: TButton;
|
|
OldRelEdit: TEdit;
|
|
OldVarEdit: TEdit;
|
|
NewVarEdit: TEdit;
|
|
NewRelEdit: TEdit;
|
|
Label1: TLabel;
|
|
Label2: TLabel;
|
|
Label3: TLabel;
|
|
Label4: TLabel;
|
|
procedure ComputeBtnClick(Sender: TObject);
|
|
procedure FormShow(Sender: TObject);
|
|
procedure HelpBtnClick(Sender: TObject);
|
|
procedure ResetBtnClick(Sender: TObject);
|
|
private
|
|
{ private declarations }
|
|
public
|
|
{ public declarations }
|
|
end;
|
|
|
|
var
|
|
RelChangeFrm: TRelChangeFrm;
|
|
|
|
implementation
|
|
|
|
{ TRelChangeFrm }
|
|
|
|
procedure TRelChangeFrm.ResetBtnClick(Sender: TObject);
|
|
begin
|
|
OldRelEdit.Text := '';
|
|
NewRelEdit.Text := '';
|
|
OldVarEdit.Text := '';
|
|
NewVarEdit.Text := '';
|
|
end;
|
|
|
|
procedure TRelChangeFrm.FormShow(Sender: TObject);
|
|
begin
|
|
ResetBtnClick(self);
|
|
end;
|
|
|
|
procedure TRelChangeFrm.HelpBtnClick(Sender: TObject);
|
|
begin
|
|
ContextHelpForm.HelpMessage((Sender as TButton).tag);
|
|
end;
|
|
|
|
procedure TRelChangeFrm.ComputeBtnClick(Sender: TObject);
|
|
var
|
|
OldRel, NewRel, OldVar, NewVar : double;
|
|
begin
|
|
OldRel := StrToFloat(OldRelEdit.Text);
|
|
OldVar := StrToFloat(OldVarEdit.Text);
|
|
NewVar := StrToFloat(NewVarEdit.Text);
|
|
NewRel := 1.0 - ((OldVar / NewVar) * (1.0 - OldRel));
|
|
NewRelEdit.Text := FloatToStr(NewRel);
|
|
end;
|
|
|
|
initialization
|
|
{$I relchangeunit.lrs}
|
|
|
|
end.
|
|
|