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GtkScale

     Base class for GtkHScale and GtkVScale.

Object Hierarchy

   GtkObject
   `-- GtkWidget
         `-- GtkRange
               `-- GtkScale

Description

     A GtkScale is a widget that looks very like a GtkScrollbar without
     the arrow buttons at either end and with the ability to display the
     current value as text.

     There are some issues with the value display, in that
     scrolling-aware container widgets will not allow their child's
     GtkAdjustment to be overwritten, which means that the GtkScale
     cannot have focus unless it takes the values given by the container
     to the scrollable widget. This in turn misconfigures the display
     area, which is calculated with regard to the upper value of the
     associated adjustment object. When a container sets an adjustment,
     each value is 0 at the start, and the later values are calculated
     on the fly after the widgets have been drawn.

     Although it is possible to use the GtkWidget method queue_resize()
     to force the text area to resize according to the width of the new
     adjustment values, the widget does not fully redraw unless it has a
     configure event - that is, you need to manually resize it and then
     restore it.

     For all these reasons, it is unadvisable to use the draw-value
     feature where the GtkScale is associated with a scrollable widget.

Methods

   set_digits()
     Sets number of decimal places.

   set_draw_value()
     Toggles whether value is displayed.

   set_value_pos()
     Sets position of numeric text.

   get_value_width()
     Returns string width of numeric text.
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