2D Graphics Visual C++ .NET

using namespace System;
  using namespace System::ComponentModel;
  using namespace System::Collections;
  using namespace System::Windows::Forms;
  using namespace System::Data;
  using namespace System::Drawing;
  public ref class Form1 : public System::Windows::Forms::Form
  {
  public:
    Form1(void)
    {
      InitializeComponent();
            Head  = Drawing::Rectangle(125, 25, 250, 250);
            Mouth = Drawing::Rectangle(200, 175, 100, 50);
            LEye  = Drawing::Rectangle(200, 100, 25, 25);
            REye  = Drawing::Rectangle(275, 100, 25, 25);
            b4pen = gcnew Pen(Color::Black, 4);
    }
        System::Drawing::Rectangle Head;
        System::Drawing::Rectangle Mouth;
        System::Drawing::Rectangle LEye;
        System::Drawing::Rectangle REye;
        Pen^ b4pen;
    void InitializeComponent(void)
    {
            this->SuspendLayout();
            this->AutoScrollMinSize = System::Drawing::Size(400,400);
            this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
            this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
            this->ClientSize = System::Drawing::Size(292, 273);
            this->Name = L"Form1";
            this->Text = L"Optimized Happy Face";
            this->Paint += 
                gcnew System::Windows::Forms::PaintEventHandler(this, 
                                                         &Form1::Form1_Paint);
            this->ResumeLayout(false);
        }
        System::Void Form1_Paint(System::Object^ sender, System::Windows::Forms::PaintEventArgs^ e)
        {
            Graphics^ g = e->Graphics;
            Drawing::Rectangle ClipRect = e->ClipRectangle;
            ClipRect.Offset(-AutoScrollPosition.X, -AutoScrollPosition.Y);
            g->TranslateTransform((float)AutoScrollPosition.X, 
                                  (float)AutoScrollPosition.Y);
            if (!(Rectangle::Intersect(ClipRect, Head)).IsEmpty)
            {
                g->FillEllipse(Brushes::Yellow, Head);
                g->DrawEllipse(b4pen, Head);
                if (!(Rectangle::Intersect(ClipRect, Mouth)).IsEmpty)
                {
                    g->FillPie(Brushes::White, Mouth, 0, 180);
                    g->DrawPie(b4pen, Mouth, 0, 180);
                }
                if (!(Rectangle::Intersect(ClipRect, LEye)).IsEmpty)
                {
                    g->FillEllipse(Brushes::White, LEye);
                    g->DrawEllipse(b4pen, LEye);
                }
                if (!(Rectangle::Intersect(ClipRect, REye)).IsEmpty)
                {
                    g->FillEllipse(Brushes::White, REye);
                    g->DrawEllipse(b4pen, REye);
                }
            }
        }
  };
[STAThreadAttribute]
int main(array ^args)
{
  Application::Run(gcnew Form1());
  return 0;
}