GtkScale
Base class for GtkHScale and
GtkVScale.
Object Hierarchy
Direct subclasses
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.
