Computer Programming Concepts and Visual Basic David I. Schneider

10.1 LIST BOXES AND COMBO BOXES
The dialog box in Figure 10-1 contains two list boxes, one text box, and two combo boxes. The
Folders list box displays a list of folders (also known as directories). You click on a folder to highlight
it and double-click on a folder to open it. A combo box combines the features of a text box and
a list box. With the two combo boxes (known as dropdown combo boxes), only the text box part is
showing. The associated list drops down when you click on the arrow to the right of the text box part.
FIGURE 10-1 Open Project Dialog Box
THE LIST BOX CONTROL
The fifth row of the standard toolbox (in most editions of Visual Basic) contains the combo box icon
on the left and the list box icon on the right. The list boxes discussed in this text will display a single
column of strings, referred to as items. The items to appear initially can either be specified at
design time with the List property or set with code in a procedure. Then code is used to access, add,
or delete items from the list. We will first carry out all tasks with code and then show how the initial
items can be specified at design time. The standard prefix for the name of a list box is lst.
The Sorted property is perhaps the most interesting list box property. When it is set to
True, the items will automatically be displayed in alphabetical (that is, ANSI) order. The
default value of the Sorted property is False.
If str is a string, then the statement
lstBox.AddItem str
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