Types of List Boxes

The following illustrations show the types of list boxes.

The following list explains guidelines for list boxes:

Make the list box as wide as necessary to limit horizontal scrolling
Determine the default number of lines to display based on the precedence of the list box relative to other window controls, its specific use, the available space, and the user.
The average position can see five to seven items without the user moving their eyes.
If the list box is the main control in the dialog, up to 20 lines can be displayed initially, depending on the space available.
Provide search or filtering capability if the user would need to constantly scroll through a long list (more than four or five page downs).
If the list box contains many fields, improve scanning ease by placing a blank line after every 5th or 6th line.
Follow the guidelines for field prompts.

More information: