How to display checkmark in datagrid

Try to find the proper font with checkmark. Use it in datacolumn style. Use string column with proper signs. But ... I tried to find it (in usual fonts) and couldn't do it. Now I use space to false and simple "x" in Verdana to true.
Next solution is to modify the DataGridTextColumn to paint checkbox with ControlPaint class:

ButtonState st=(base.Text=="x"?ButtonState.Checked:ButtonState.Normal);

if(!this.Enabled) st|=ButtonState.Inactive;
ControlPaint.DrawCheckBox(e.Graphics,0,0,Math.Min(this.Width,this.Height)-4,
this.Height-4,st);