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.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2