using System;
using System.Drawing;
using System.Windows.Forms;
class ToggleButtons: Form
{
protected Panel panel = new Panel();
protected ToolBar tbar;
protected string strText = "Toggle";
protected Color clrText = SystemColors.WindowText;
FontStyle fontstyle = FontStyle.Regular;
public static void Main()
{
Application.Run(new ToggleButtons());
}
public ToggleButtons()
{
panel.Parent = this;
panel.Dock = DockStyle.Fill;
panel.BackColor = SystemColors.Window;
panel.ForeColor = SystemColors.WindowText;
panel.Resize += new EventHandler(PanelOnResize);
panel.Paint += new PaintEventHandler(PanelOnPaint);
Bitmap bm = new Bitmap(GetType(), "ToggleButtons.bmp");
ImageList imglst = new ImageList();
imglst.ImageSize = new Size(bm.Width / 4, bm.Height);
imglst.Images.AddStrip(bm);
imglst.TransparentColor = Color.White;
tbar = new ToolBar();
tbar.ImageList = imglst;
tbar.Parent = this;
tbar.ShowToolTips = true;
tbar.ButtonClick += new ToolBarButtonClickEventHandler(ToolBarOnClick);
FontStyle[] afs = { FontStyle.Bold, FontStyle.Italic,
FontStyle.Underline, FontStyle.Strikeout };
for (int i = 0; i < 4; i++)
{
ToolBarButton tbarbtn = new ToolBarButton();
tbarbtn.ImageIndex = i;
tbarbtn.Style = ToolBarButtonStyle.ToggleButton;
tbarbtn.ToolTipText = afs[i].ToString();
tbarbtn.Tag = afs[i];
tbar.Buttons.Add(tbarbtn);
}
}
void ToolBarOnClick(object obj, ToolBarButtonClickEventArgs tbbcea)
{
ToolBarButton tbarbtn = tbbcea.Button;
if (tbarbtn.Tag == null ||
tbarbtn.Tag.GetType() != typeof(FontStyle))
return;
if (tbarbtn.Pushed)
fontstyle |= (FontStyle) tbarbtn.Tag;
else
fontstyle &= ~(FontStyle) tbarbtn.Tag;
panel.Invalidate();
}
void PanelOnResize(object obj, EventArgs ea)
{
Panel panel = (Panel) obj;
panel.Invalidate();
}
void PanelOnPaint(object obj, PaintEventArgs pea)
{
Panel panel = (Panel) obj;
Graphics grfx = pea.Graphics;
Font font = new Font("Times New Roman", 72, fontstyle);
SizeF sizef = grfx.MeasureString(strText, font);
grfx.DrawString(strText, font, new SolidBrush(clrText),
(panel.Width - sizef.Width) / 2,
(panel.Height - sizef.Height) / 2);
}
}
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