using System;
using System.Drawing;
using System.Windows.Forms;
class ColorFillDialogBox: Form
{
GroupBox grpbox = new GroupBox();
CheckBox chkbox = new CheckBox();
public ColorFillDialogBox()
{
string[] astrColor = { "Black", "Blue", "Green", "Cyan",
"Red", "Magenta", "Yellow", "White"};
grpbox.Parent = this;
grpbox.Text = "Color";
grpbox.Location = new Point(8, 8);
grpbox.Size = new Size(96, 12 * (astrColor.Length + 1));
for (int i = 0; i < astrColor.Length; i++)
{
RadioButton radiobtn = new RadioButton();
radiobtn.Parent = grpbox;
radiobtn.Text = astrColor[i];
radiobtn.Location = new Point(8, 12 * (i + 1));
radiobtn.Size = new Size(80, 10);
}
chkbox.Parent = this;
chkbox.Text = "Fill Ellipse";
chkbox.Location = new Point(8, grpbox.Bottom + 4);
chkbox.Size = new Size(80, 10);
Button btn = new Button();
btn.Parent = this;
btn.Text = "OK";
btn.Location = new Point(8, chkbox.Bottom + 4);
btn.Size = new Size(40, 16);
btn.DialogResult = DialogResult.OK;
AcceptButton = btn;
btn = new Button();
btn.Parent = this;
btn.Text = "Cancel";
btn.Location = new Point(64, chkbox.Bottom + 4);
btn.Size = new Size(40, 16);
btn.DialogResult = DialogResult.Cancel;
CancelButton = btn;
ClientSize = new Size(112, btn.Bottom + 8);
AutoScaleBaseSize = new Size(4, 8);
}
public Color Color
{
get
{
for (int i = 0; i < grpbox.Controls.Count; i++)
{
RadioButton radiobtn = (RadioButton) grpbox.Controls[i];
if (radiobtn.Checked)
return Color.FromName(radiobtn.Text);
}
return Color.Black;
}
set
{
for (int i = 0; i < grpbox.Controls.Count; i++)
{
RadioButton radiobtn = (RadioButton) grpbox.Controls[i];
if (value == Color.FromName(radiobtn.Text))
{
radiobtn.Checked = true;
break;
}
}
}
}
public bool Fill
{
get { return chkbox.Checked; }
set { chkbox.Checked = value; }
}
}
class DrawOrFillEllipse: Form
{
Color colorEllipse = Color.Red;
bool bFillEllipse = false;
public static void Main()
{
Application.Run(new DrawOrFillEllipse());
}
public DrawOrFillEllipse()
{
ResizeRedraw = true;
Menu = new MainMenu();
Menu.MenuItems.Add("&Options");
Menu.MenuItems[0].MenuItems.Add("&Color...", new EventHandler(MenuColorOnClick));
}
void MenuColorOnClick(object obj, EventArgs ea)
{
ColorFillDialogBox dlg = new ColorFillDialogBox();
dlg.Color = colorEllipse;
dlg.Fill = bFillEllipse;
if (dlg.ShowDialog() == DialogResult.OK)
{
colorEllipse = dlg.Color;
bFillEllipse = dlg.Fill;
Invalidate();
}
}
protected override void OnPaint(PaintEventArgs pea)
{
Graphics grfx = pea.Graphics;
Rectangle rect = new Rectangle(0, 0, 50, 50);
if(bFillEllipse)
grfx.FillEllipse(new SolidBrush(colorEllipse), rect);
else
grfx.DrawEllipse(new Pen(colorEllipse), rect);
}
}
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