Create two color instances with different alpha components : Color « 2D Graphics « C# / C Sharp

Create two color instances with different alpha components


using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

public class Form1 : Form {

    protected override void OnPaint(PaintEventArgs e) {
        Graphics g = e.Graphics;
        g.FillRectangle(Brushes.White, this.ClientRectangle);

        Color c1 = Color.FromArgb(100, Color.Blue);
        Color c2 = Color.FromArgb(50, Color.Green);

        g.FillEllipse(Brushes.Red, 20, 20, 80, 80);
        g.FillRectangle(new SolidBrush(c1), 60, 80, 60, 60);
        Point[] pa = new Point[] {
                        new Point(150, 40), 
                        new Point(90, 40), 
                        new Point(90, 120)};
        g.FillPolygon(new SolidBrush(c2), pa);
    public static void Main() {
        Application.Run(new Form1());


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