Candonui

//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------


void __fastcall TForm1::FormActivate(TObject *Sender)
{
 Edit1->SetFocus();        
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button2Click(TObject *Sender)
{
 Edit1->Clear();
 StaticText1->Caption = "";
 StaticText2->Caption = "";
 StaticText3->Caption = "0";
 Button1->Enabled = false;       
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Button1Click(TObject *Sender)
{
 if(StaticText3->Caption == "0")
 {
  plot = (StrToFloat(Edit1->Text) * StrToFloat(Edit1->Text)) * M_PI;
  ilg = 2 * M_PI * StrToFloat(Edit1->Text);
  StaticText1->Caption = FloatToStrF(plot,ffFixed,8,2);
  StaticText2->Caption = FloatToStrF(ilg,ffFixed,8,2);
  StaticText3->Caption = '1';
 } 
 else
 {
  ShowMessage("Yveskite apskritimo spinduli");
  StaticText1->Caption = "";
  StaticText2->Caption = "";
  StaticText3->Caption = "0";
  Edit1->Clear();
  Button1->Enabled = false;
 }
}
//---------------------------------------------------------------------------

void __fastcall TForm1::Edit1Change(TObject *Sender)
{
 Button1->Enabled = true;
}
//---------------------------------------------------------------------------