#pragma once
#define _USE_MATH_DEFINES
#include <math.h>

namespace Grafika 
{
  ...
  ...
  ...
  
  #pragma endregion
  
  int A, Okres;
  // --------------------------------------------------------------------------
  private: System::Void Form1_Load(System::Object^  sender, System::EventArgs^  e) 
  {
    A=150;
    Okres=75;
  }
  // --------------------------------------------------------------------------
  private: System::Void pictureBox1_Paint(System::Object^  sender, System::Windows::Forms::PaintEventArgs^  e) 
  {
    Graphics^ grafika = e->Graphics; 
    grafika->Clear( Color::White);

    Pen^ pioro=gcnew Pen(Color::Blue);
    if(checkBoxL->Checked==true)
    grafika->DrawLine(pioro, 10,10, 140,10);     // Rysowanie linii

    SolidBrush^ pedz = gcnew SolidBrush(Color::LightGreen);
    if(checkBoxP->Checked==true)
      grafika->FillRectangle(pedz, 20,50, 120, 150);

    pioro->Width=6;
    pioro->Color=Color::Red;
    pioro->EndCap=Drawing2D::LineCap::ArrowAnchor;  //NoAnchor
    //pioro->DashStyle = System::Drawing::Drawing2D::DashStyle::DashDotDot;
    int szerokosc=pictureBox1->Width;
    if(checkBoxS->Checked==true)
      grafika->DrawLine(pioro, 10,20, szerokosc-10,20);       
   
    SolidBrush^ pedzel = gcnew SolidBrush(System::Drawing::Color::DarkGreen);
    System::Drawing::Font^ czcionka = gcnew System::Drawing::Font(
      System::Drawing::FontFamily::GenericSansSerif, 14, FontStyle::Regular);
  
    if(checkBoxN->Checked==true)
      grafika->DrawString("Ala ma kota",czcionka,pedzel,10,25);

    pioro->Color=Color::DarkRed;
    if(checkBoxE->Checked==true)
      grafika->DrawEllipse(pioro, 20,180, 200, 150);
   
    pioro->Color=Color::Yellow;
    if(checkBoxP->Checked==true)
      grafika->DrawRectangle(pioro, 40,80, szerokosc-80, 70);
    
    Pen^ pioro2=gcnew Pen(Color::Black);
    pioro2->Width=3;
    if(checkBoxKrzyzyk->Checked==true)
    {
      grafika->DrawLine(pioro2, 0,0, pictureBox1->Width,pictureBox1->Height);
      grafika->DrawLine(pioro2, 0,pictureBox1->Height, pictureBox1->Width,0);
    }
    if(checkBoxDom->Checked==true)
    {
      int szer=pictureBox1->Width,wys=pictureBox1->Height;
      grafika->DrawLine(pioro2, int(0.2*szer),int(0.5*wys),  int(0.2*szer),int(0.8*wys));
      grafika->DrawLine(pioro2, int(0.2*szer),int(0.8*wys),  int(0.8*szer),int(0.8*wys));
      grafika->DrawLine(pioro2, int(0.8*szer),int(0.8*wys),  int(0.8*szer),int(0.5*wys));
      grafika->DrawLine(pioro2, int(0.8*szer),int(0.5*wys),  int(0.2*szer),int(0.5*wys));
      grafika->DrawLine(pioro2, int(0.2*szer),int(0.5*wys),  int(0.5*szer),int(0.2*wys));
      grafika->DrawLine(pioro2, int(0.5*szer),int(0.2*wys),  int(0.8*szer),int(0.5*wys));
    }
    if(checkBoxSin->Checked==true)
    {
      pioro2->Width=1;
      int yp=200;
      for(int x=1; x< pictureBox1->Width; x++)
      {
        int y=200+A*sin(2*M_PI/Okres*x);
        grafika->DrawLine(pioro2, x-1,yp,x,y);
        yp=y;
      }
    }
  }
  // --------------------------------------------------------------------------
  private: System::Void pictureBox1_Resize(System::Object^  sender, System::EventArgs^  e) 
  {
    pictureBox1->Invalidate();
  }
  // --------------------------------------------------------------------------
  private: System::Void hScrollBar_Scroll(System::Object^  sender, System::Windows::Forms::ScrollEventArgs^  e) 
  {
    A=hScrollBarA->Value;
    labelA->Text=L"A = "+hScrollBarA->Value.ToString();
    Okres=hScrollBarOkres->Value;
    labelOkres->Text=L"O = "+Okres.ToString();
    pictureBox1->Invalidate();
  }
  // --------------------------------------------------------------------------
};
}