Graphics^ in Visual C++

I wanted to recall the graphics methods in Visual C++.

#pragma endregion

private:

System::Void init_Random()

{

srand(time(NULL));

}

private:

Graphics^ my_graph;

Pen^ my_pen1;

Pen^ my_pen2;

Pen^ my_pen3;

Pen^ my_pen4;

Pen^ my_pen5;

Pen^ my_pen6;

private:

System::Drawing::Color color1;

System::Drawing::Color color2;

System::Drawing::Color color3;

System::Drawing::Color color4;

System::Drawing::Color color5;

System::Drawing::Color color6;

private:

System::Void init_Graph()

{

my_graph=panel1->CreateGraphics();

color1=System::Drawing::Color::Yellow;

color2=System::Drawing::Color::Blue;

color3=System::Drawing::Color::Red;

color4=System::Drawing::Color::White;

color5=System::Drawing::Color::Violet;

color6=System::Drawing::Color::Green;

my_pen1=gcnew Pen(color1);

my_pen2=gcnew Pen(color2);

my_pen3=gcnew Pen(color3);

my_pen4=gcnew Pen(color4);

my_pen5=gcnew Pen(color5);

my_pen6=gcnew Pen(color6);

}

private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {

Close();

}

private: System::Void Form1_Load(System::Object^  sender, System::EventArgs^  e) {

init_Graph();

init_Random();

}

private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e) {

int centr_x,centr_y,marg=5,i,j;

centr_x=panel1->Width/2;

centr_y=panel1->Height/2;

//frame

my_pen1->Width=3;

my_pen1->DashStyle=System::Drawing::Drawing2D::DashStyle::DashDot;

my_graph->DrawLine(my_pen1,marg,marg,panel1->Width-marg,marg);

my_graph->DrawLine(my_pen1,marg,panel1->Height-marg,panel1->Width-marg,panel1->Height-marg);

my_graph->DrawLine(my_pen1,marg,marg,marg,panel1->Height-marg);

my_graph->DrawLine(my_pen1,panel1->Width-marg,marg,panel1->Width-marg,panel1->Height-marg);

my_pen2->Width=2;

my_pen2->StartCap=System::Drawing::Drawing2D::LineCap::Square;

my_pen2->EndCap=System::Drawing::Drawing2D::LineCap::Round;

my_graph->DrawLine(my_pen2,centr_x,marg,centr_x,panel1->Height-marg);

my_graph->DrawLine(my_pen2,marg,centr_y,panel1->Width-marg,centr_y);

my_pen3->Width=3;

j=30;

    for(i=0;i<4;i++)

{

  my_graph->DrawEllipse(my_pen3,centr_x-j,centr_y-j,j*2,j*2);

  j+=30;

}

Bitmap^ my_bitmap=gcnew Bitmap(panel1->Width,panel1->Height);

System::Drawing::Color temp_color;

for(i=marg;i<panel1->Width-marg;i+=marg)

{

for(j=marg;j<panel1->Height;j+=marg)

{

temp_color=System::Drawing::Color::FromArgb(rand()%255,rand()%255,rand()%255);

my_bitmap->SetPixel(i,j,temp_color);

}

}

my_graph->DrawImage(dynamic_cast<Image^>(my_bitmap),1,1);

my_pen4->Width=5;

my_pen4->StartCap=System::Drawing::Drawing2D::LineCap::RoundAnchor;

my_pen4->EndCap=System::Drawing::Drawing2D::LineCap::ArrowAnchor;

my_pen4->DashStyle=System::Drawing::Drawing2D::DashStyle::DashDot;

my_graph->DrawLine(my_pen4,centr_x,marg,panel1->Width-marg,centr_y);

my_graph->DrawLine(my_pen4,panel1->Width-marg,centr_y,centr_x,panel1->Height-marg);

my_graph->DrawLine(my_pen4,centr_x,panel1->Height-marg,marg,centr_y);

my_graph->DrawLine(my_pen4,marg,centr_y,centr_x,marg);

int x,y,a,h;

x=30,y=30,a=60,h=60;

my_pen5->Width=3;

my_graph->DrawEllipse(my_pen5,x,y,a,h);

x=30,y=panel1->Height-90;

my_graph->DrawEllipse(my_pen5,x,y,a,h);

x=panel1->Width-90,y=30,a=60,h=60;

my_graph->DrawEllipse(my_pen5,x,y,a,h);

y=panel1->Height-90;

my_graph->DrawEllipse(my_pen5,x,y,a,h);

my_pen6->Width=4;

my_pen6->DashCap=System::Drawing::Drawing2D::DashCap::Round;

my_pen6->DashStyle=System::Drawing::Drawing2D::DashStyle::DashDotDot;

my_graph->DrawLine(my_pen6,marg,marg,panel1->Width-marg,panel1->Height-marg);

my_graph->DrawLine(my_pen6,panel1->Width-marg,marg,marg,panel1->Height-marg);

}

};

}