Dialogue with interface user :

• Dialogue boxes are used to extend and complete an interaction within a limited context.

• Dialogue boxes are always displayed from another window either primary or secondary or another dialog boxes.

• They may appear as a result of a command button being activated or a menu choice being selected, or they may be pretended automatically by the system when a condition exists that results the user attention or additional input.

• They may possess some basic action (close button and possibly a whats this button), but do not have a menu bar.

• For example, a Microsoft = window dialog is illustrated in fig.

• Most windowing systems provide standard dialogue boxes for common functions : some example being save as, etc.

• Many platforms also recommend a set of standard command buttons for use in a variable kinds of dialog boxes such as OK, cancel and so on.

• Dialogue boxes are of 2 types i.e. modal or modeling and they may also cascade or unfold.

Uses :

• Dialogue boxes are used for presenting brief amounts of information or to request specific transient actions.

• Dialog box actions will usually be those that do not occur frequently.

Command buttons :

• Dialog boxes commonly include OK and cancel command buttons.

• OK and cancel buttons work but in dialog boxes that allow the user to set the parameters for a particular command.

• OK is typically defined as the default command button when the dialog box window opens.

• Other command buttons may be included in a dialogue box in addition to or instead of the OK and cancel buttons.