A group box is a rectangle drawn around other panel items to denote a logical grouping of items.
If label is no null, it will be used as the group box label. Otherwise, no label is drawn for the group.
The parameters x and y are used to specify an absolute position for the group box within the panel; if -1 is provided, a default position will be assigned such that the group box is placed next to the last item inserted into the panel. If width or height is -1, an appropriate size will be used for the group box based on the parent area.
The style argument is reserved for future use.
The name argument is used to associate a name with the group box, allowing the application user to set X Windows resource values for each individual group box.