## GtkScrollbar GtkScrollbar — Base class for GtkHScrollbar and GtkVScrollbar |

## Synopsis

    #include <gtk/gtk.h>

                GtkScrollbar;

## Object Hierarchy

      GObject
       +----GtkObject
             +----GtkWidget
                   +----GtkRange
                         +----GtkScrollbar
                               +----GtkHScrollbar
                               +----GtkVScrollbar

## Implemented Interfaces

GtkScrollbar implements AtkImplementorIface.

## Style Properties

      "fixed-slider-length"  gboolean              : Read
      "has-backward-stepper" gboolean              : Read
      "has-forward-stepper"  gboolean              : Read
      "has-secondary-backward-stepper" gboolean              : Read
      "has-secondary-forward-stepper" gboolean              : Read
      "min-slider-length"    gint                  : Read

## Description

The GtkScrollbar widget is an abstract base class for GtkHScrollbar and GtkVScrollbar. It is not very useful in itself.

The position of the thumb in a scrollbar is controlled by the scroll adjustments. See GtkAdjustment for the fields in an adjustment - for GtkScrollbar, the "value" field represents the position of the scrollbar, which must be between the "lower" field and "upper - page_size." The "page_size" field represents the size of the visible scrollable area. The "step_increment" and "page_increment" fields are used when the user asks to step down (using the small stepper arrows) or page down (using for example the PageDown key).

## Details

### GtkScrollbar

    typedef struct _GtkScrollbar GtkScrollbar;

The GtkScrollbar struct does not contain any public data.

## Style Properties

### The "`fixed-slider-length`" style property

      "fixed-slider-length"  gboolean              : Read

Don't change slider size, just lock it to the minimum length.

Default value: FALSE

### The "`has-backward-stepper`" style property

      "has-backward-stepper" gboolean              : Read

Display the standard backward arrow button.

Default value: TRUE

### The "`has-forward-stepper`" style property

      "has-forward-stepper"  gboolean              : Read

Display the standard forward arrow button.

Default value: TRUE

### The "`has-secondary-backward-stepper`" style property

      "has-secondary-backward-stepper" gboolean              : Read

Display a second backward arrow button on the opposite end of the scrollbar.

Default value: FALSE

### The "`has-secondary-forward-stepper`" style property

      "has-secondary-forward-stepper" gboolean              : Read

Display a secondary forward arrow button on the opposite end of the scrollbar.

Default value: FALSE

### The "`min-slider-length`" style property

      "min-slider-length"    gint                  : Read

Minimum length of scrollbar slider.

Allowed values: >= 0

Default value: 21

## See Also

GtkHScrollbar | a horizontal scrollbar.
GtkVScrollbar | a vertical scrollbar.
GtkAdjustment | connects scrollbars to the widget being scrolled.
GtkScrolledWindow | convenient widget for setting up scrolling.