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git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@7393 8e941d3f-bd1b-0410-a28a-d453659cc2b4
100 lines
2.0 KiB
ObjectPascal
100 lines
2.0 KiB
ObjectPascal
unit SpBrUnit;
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{$mode objfpc}{$H+}
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interface
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uses
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Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
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StdCtrls, ExtCtrls,
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ContextHelpUnit;
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type
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{ TSpBrFrm }
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TSpBrFrm = class(TForm)
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Bevel1: TBevel;
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Bevel2: TBevel;
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HelpBtn: TButton;
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Panel1: TPanel;
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ResetBtn: TButton;
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ComputeBtn: TButton;
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CloseBtn: TButton;
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OldRelEdit: TEdit;
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MultKEdit: TEdit;
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NewRelEdit: TEdit;
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Label1: TLabel;
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Label2: TLabel;
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Label3: TLabel;
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procedure ComputeBtnClick(Sender: TObject);
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procedure FormActivate(Sender: TObject);
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procedure FormShow(Sender: TObject);
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procedure HelpBtnClick(Sender: TObject);
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procedure ResetBtnClick(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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end;
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var
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SpBrFrm: TSpBrFrm;
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implementation
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uses
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Math;
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{ TSpBrFrm }
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procedure TSpBrFrm.ResetBtnClick(Sender: TObject);
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begin
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OldRelEdit.Text := '';
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NewRelEdit.Text := '';
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MultKEdit.Text := '';
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end;
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procedure TSpBrFrm.FormActivate(Sender: TObject);
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var
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w: Integer;
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begin
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w := MaxValue([ResetBtn.Width, ComputeBtn.Width, CloseBtn.Width, HelpBtn.Width]);
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HelpBtn.Constraints.MinWidth := w;
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ResetBtn.Constraints.MinWidth := w;
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ComputeBtn.Constraints.MinWidth := w;
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CloseBtn.Constraints.MinWidth := w;
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Constraints.MaxHeight := Height;
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Constraints.MinHeight := Height;
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end;
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procedure TSpBrFrm.FormShow(Sender: TObject);
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begin
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ResetBtnClick(self);
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end;
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procedure TSpBrFrm.HelpBtnClick(Sender: TObject);
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begin
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if ContextHelpForm = nil then
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Application.CreateForm(TContextHelpForm, ContextHelpForm);
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ContextHelpForm.HelpMessage((Sender as TButton).Tag);
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end;
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procedure TSpBrFrm.ComputeBtnClick(Sender: TObject);
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var
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oldrel, newrel, Factor: double;
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begin
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oldrel := StrToFloat(OldRelEdit.Text);
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Factor := StrToFloat(MultKEdit.Text);
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newrel := (Factor * oldrel) / (1.0 + (Factor - 1.0) * oldrel);
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NewRelEdit.Text := FormatFloat('0.00000', NewRel); //FloatToStr(newrel);
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end;
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initialization
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{$I spbrunit.lrs}
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end.
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