Курсовая работа / KURSOVA_ROBOTA / Дроби / CheckUnit

#include <vcl.h>
#pragma hdrstop
#include "CheckUnit.h"
#include "FracUnit.h"
#include "CalculateFrac.h"
#include "Math.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TCheckForm *CheckForm;
//---------------------------------------------------------------------------
__fastcall TCheckForm::TCheckForm(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TCheckForm::FormActivate(TObject *Sender)
{
Edit1->Clear(); Edit2->Clear(); Edit3->Clear(); Edit4->Clear();
Button1->Enabled=true;
}
//---------------------------------------------------------------------------
void __fastcall TCheckForm::Button2Click(TObject *Sender)
{
Edit1->Clear(); Edit2->Clear(); Edit3->Clear(); Edit4->Clear();
Button1->Enabled=true;
}
//---------------------------------------------------------------------------
void __fastcall TCheckForm::Button3Click(TObject *Sender)
{
  CheckForm->Close();
  MainForm->Show();
}
//---------------------------------------------------------------------------
void __fastcall TCheckForm::Edit1KeyPress(TObject *Sender, char &Key)
{
  if(((Key>='0')&&(Key<='9'))||(Key==VK_BACK)||(Key=='-'))
    return;
  if(Key==VK_RETURN)
    Edit2->SetFocus();
  Key=0;
}
//---------------------------------------------------------------------------
void __fastcall TCheckForm::Edit2KeyPress(TObject *Sender, char &Key)
{
  if(((Key>='0')&&(Key<='9'))||(Key==VK_BACK))
    return;
  if(Key==VK_RETURN)
    Edit3->SetFocus();
  Key=0;
}
//---------------------------------------------------------------------------
void __fastcall TCheckForm::Edit3KeyPress(TObject *Sender, char &Key)
{
  if(((Key>='0')&&(Key<='9'))||(Key==VK_BACK)||(Key=='-'))
    return;
  if(Key==VK_RETURN)
    Edit4->SetFocus();
  Key=0;
}
//---------------------------------------------------------------------------
void __fastcall TCheckForm::Edit4KeyPress(TObject *Sender, char &Key)
{
  if(((Key>='0')&&(Key<='9'))||(Key==VK_BACK))
    return;
  if(Key==VK_RETURN)
    Button1->SetFocus();
  Key=0;
}
//---------------------------------------------------------------------------
void __fastcall TCheckForm::Button1Click(TObject *Sender)
{
  int a,b,c,d;
  if(((Edit1->Text).Length()==0)||((Edit2->Text).Length()==0)||
     ((Edit3->Text).Length()==0)||((Edit4->Text).Length()==0))
  {
    ShowMessage("Заповніть всі поля!");
    return;
  }
  a=StrToInt(Edit1->Text);
  b=StrToInt(Edit2->Text);
  c=StrToInt(Edit3->Text);
  d=StrToInt(Edit4->Text);
  if((d==0)||(b==0))
  {
    ShowMessage("Ділення на нуль!!");
    return;
  }
  Button1->Enabled=false;
  CalculateFrac *Calculate=new CalculateFrac;
  int check=Calculate->CheckFrac(a,b,c,d);
  if (check==1)
    ShowMessage("Дроби рівні.");
  else
    if (check==2)
      ShowMessage("Перший дріб більше другого.");
    else
      ShowMessage("Другий дріб більше першого.");
}
//---------------------------------------------------------------------------