The control is a rectangle that groups other controls together by drawing a border around them and displaying the given text in the upper-left corner.
The GROUPBOX statement defines the text, identifier, dimensions, and attributes of a control window. The predefined class for this control is WC_STATIC. If you do not specify a style, the default style is SS_GROUPBOX and WS_TABSTOP.
Use the GROUPBOX statement only in a DIALOG or WINDOW statement.