A combo-box is a combination of an edit box and a list box.

Here is some info from the MSDN documentation.


A combo box control combines the features of a text box and a list box. This
control allows the user to select an item either by typing text into the
combo
box, or by selecting it from the list.


Combo boxes present a list of choices to the user. If the number of items
exceeds what can be displayed in the combo box, scroll bars will
automatically
appear on the control. The user can then scroll up and down or left to right
through the list.

When to Use a Combo Box Instead of a List Box

Generally, a combo box is appropriate when there is a list of suggested
choices, and a list box is appropriate when you want to limit input to what
is on
the list. A combo box contains an edit field, so choices not on the list can
be typed in this field.

In addition, combo boxes save space on a form. Because the full list is not
displayed until the user clicks the down arrow (except for Style 1, which is
always dropped down), a combo box can easily fit in a small space where a
list box would not fit.


VICUG-L is the Visually Impaired Computer User Group List.
To join or leave the list, send a message to
[log in to unmask]  In the body of the message, simply type
"subscribe vicug-l" or "unsubscribe vicug-l" without the quotations.
 VICUG-L is archived on the World Wide Web at
http://maelstrom.stjohns.edu/archives/vicug-l.html