Gets the height of the item area.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
This measurement is based on the font height plus a small margin to provide white space around the item.
The extenders of characters such as "g" and "y" do not display properly when the font is changed to 9.75-point Arial. To correct this, derive a class from CheckedListBox and override to return base.ItemHeight+2.
Available since 1.1