1 2@c %start of fragment 3 4@node GtkScrollbar 5@chapter GtkScrollbar 6Base class for GtkHScrollbar and GtkVScrollbar 7 8@section Overview 9The @code{<gtk-scrollbar>} widget is an abstract base class for 10@code{<gtk-hscrollbar>} and @code{<gtk-vscrollbar>}. It is not very useful in 11itself. 12 13The position of the thumb in a scrollbar is controlled by the scroll 14adjustments. See @code{<gtk-adjustment>} for the fields in an adjustment - for 15@code{<gtk-scrollbar>}, the "value" field represents the position of the 16scrollbar, which must be between the "lower" field and "upper - page_size." The 17"page_size" field represents the size of the visible scrollable area. The 18"step_increment" and "page_increment" fields are used when the user asks to step 19down (using the small stepper arrows) or page down (using for example the 20PageDown key). 21 22@section Usage 23@include defuns-gtkscrollbar.xml.texi 24 25@c %end of fragment 26