Hatch Brush Menu
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
class HatchBrushMenu: Form
{
HatchStyleMenuItem hsmiChecked;
const int iMin = 0, iMax = 52;
public static void Main()
{
Application.Run(new HatchBrushMenu());
}
public HatchBrushMenu()
{
ResizeRedraw = true;
Menu = new MainMenu();
Menu.MenuItems.Add("&Hatch-Style");
for (HatchStyle hs = (HatchStyle)iMin; hs <= (HatchStyle)iMax;hs++)
{
HatchStyleMenuItem hsmi = new HatchStyleMenuItem();
hsmi.HatchStyle = hs;
hsmi.Click += new EventHandler(MenuHatchStyleOnClick);
if ((int)hs % 8 == 0)
hsmi.BarBreak = true;
Menu.MenuItems[0].MenuItems.Add(hsmi);
}
hsmiChecked = (HatchStyleMenuItem) Menu.MenuItems[0].MenuItems[0];
hsmiChecked.Checked = true;
}
void MenuHatchStyleOnClick(object obj, EventArgs ea)
{
hsmiChecked.Checked = false;
hsmiChecked = (HatchStyleMenuItem) obj;
hsmiChecked.Checked = true;
Invalidate();
}
protected override void OnPaint(PaintEventArgs pea)
{
Graphics grfx = pea.Graphics;
HatchBrush hbrush = new HatchBrush(hsmiChecked.HatchStyle,
Color.White, Color.Black);
grfx.FillEllipse(hbrush, ClientRectangle);
}
}
class HatchStyleMenuItem: MenuItem
{
const int cxImage = 32, cyImage = 32, iMargin = 2;
readonly int cxCheck, cyCheck;
public HatchStyle HatchStyle;
public HatchStyleMenuItem()
{
OwnerDraw = true;
cxCheck = SystemInformation.MenuCheckSize.Width;
cyCheck = SystemInformation.MenuCheckSize.Height;
}
protected override void OnMeasureItem(MeasureItemEventArgs miea)
{
miea.ItemWidth = 2 * cxImage + 3 * iMargin - cxCheck;
miea.ItemHeight = cyImage + 2 * iMargin;
}
protected override void OnDrawItem(DrawItemEventArgs diea)
{
diea.DrawBackground();
if ((diea.State & DrawItemState.Checked) != 0)
{
ControlPaint.DrawMenuGlyph(diea.Graphics,
diea.Bounds.Location.X + iMargin,
diea.Bounds.Location.Y + iMargin,
cxImage, cyImage, MenuGlyph.Checkmark);
}
HatchBrush hbrush = new HatchBrush(HatchStyle,
Color.White, Color.Black);
diea.Graphics.FillRectangle(hbrush,
diea.Bounds.X + 2 * iMargin + cxImage,
diea.Bounds.Y + iMargin, cxImage, cyImage);
}
}
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