Csharp/C Sharp by API/System.Drawing/SystemBrushes

SystemBrushes.FromSystemColor

  
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
using System.Windows;

class HundredPixelsSquare : Form {
    public static void Main() {
        Application.Run(new HundredPixelsSquare());
    }
    public HundredPixelsSquare() {
        Text = "Pixels Square";
        ResizeRedraw = true;
    }
    protected override void OnPaint(PaintEventArgs pea) {
        DoPage(pea.Graphics, ForeColor, ClientSize.Width, ClientSize.Height);
    }
    protected void DoPage(Graphics grfx, Color clr, int cx, int cy) {
        Brush brush = SystemBrushes.FromSystemColor(SystemColors.MenuText);
        grfx.FillRectangle(brush, 100, 100, 100, 100);
    }
}