September 8, 2001

Incremental searches within list boxes

The DBList and DBCombo controls expose a MatchEntry property, that – when set to True – permits to perform quick incremental searches by simply typing the searched sequence of characters.

Extended user interface for combo boxes

Apart from the different kind of combo boxes you can obtain by manipulating the Style property, another feature is made available by Windows when dealing with combo box controls, the

Using Enter to move to next field

Most MsDos programs used the Enter key to move from one field to the next one. You can easily simulate this behavior by setting the form’s KeyPreview property to True

Mutually exclusive list boxes

Many Windows programs use two adjacent list box controls to let the user select a number of items from a list of available values; such list boxes are mutually exclusive,

Move focus with Up and Down keys

In all standard controls, Up and Down arrow keys move the focus on the previous or next control in the TabIndex order, respectively. This contrasts with text boxes, where these