Group boxes are used to associate related items in a dialog box. Other controls, such as radio buttons, pulldown menus, and even other group boxes, can be embedded within a group box control.
The size of the control is determined by the size of the controls which are embedded in the group box. The title of a group box is optional; group boxes defined without titles will display with a complete box border. Group boxes do not return a data value.
Group box titles can consist of a control (checkbox or radio button) or static text. The title control automatically enables or disables all other controls contained within the group box.
Group boxes and the controls contained within them can be treated as a single control when performing dialog layout. Adjustments to the group box control will automatically adjust any controls contained within the group box.
A special type of title control check box allows three states to exist for the group box check box (on, off, and indeterminate state).
