Provides a mechanism for grouping a number of widgets together so they all
request the same amount of space. This is typically usefull when you want
a column of widgets to have the same size, but you can't use a W(Table)
widget.
In detail, the size requiest for each widget in a GTK2.SizeGroup is the
maximum of the sizes that would have been requested for each widget in the
size group if they were not in the size group. The mode of the size group
(see set_mode() determines whether this applies to the horizontal size, the
vertical size, or both sizes.
Note that size groups only affect the amount of space requested, not the
size that the widgets finally receive. If you want the widgets in a
GTK2.SizeGroup to actually be the same size, you need to pack them in such
a way that they get the size they request and not more. For example, if
you are packing your widgets into a table, you would not include the
GTK2.FILL flag.
GTK2.SizeGroup objects are referenced by each widget in the size group, so
one you have added all widgets to a GTK2.SizeGroup, you can drop the initial
reference to the size group. If the widgets in the size group are
subsequently destroyed, then they will be removed from the size group; when
allow idgets have been removed, the size group will be freed.
Widgets can be part of multiple size groups; GTK+ will compute the
horizontal size of a widget from the horizontal requisition of all widgets
that can be reached from the widget by a chain of size groups of type
GTK2.SIZE_GROUP_HORIZONTAL or GTK2.SIZE_GROUP_BOTH, and the vertical size
from the vertical requisition of all widgets that can be reached from the
widget by a chain of size groups of type GTK2.SIZE_GROUP_VERTICAL or
GTK2.SIZE_GROUP_BOTH.
Properties:
int mode
The directions in which the size group effects the requested sizes of
its componenent widgets.
GTK2.Settings()->create()