Scrollbar

  (subclass of 9.1.3.1 Bar1d)

A simple Scrollbar. You can easily adjust the handle and bar size ratio.

   GRAPE(Scrollbar, "new-instance")(var, name, atype)

CLASS *Scrollbar
void *var
char *name
DECLARATION_FORMAT atype

Create a new Scrollbar instance. See Ruler for the parameters.

   GRAPE(scrollbar, "set-bar-size")(bar_size)

SCROLLBAR *scrollbar
double bar_size

Set the relative size of the moving part of a Scrollbar in units of total_size.

   GRAPE(scrollbar, "set-total-size")(total_size)

SCROLLBAR *scrollbar
double total_size

Set total_size as total size in units of *var.