GtkTreeView
. x
and y
specify the
center the expander. The size of the expander is determined by the
"expander-size" style property of widget
. (If widget is not
specified or doesn't have an "expander-size" property, an
unspecified default size will be used, since the caller doesn't
have sufficient information to position the expander, this is
likely not useful.) The expander is expander_size pixels tall
in the collapsed position and expander_size pixels wide in the
expanded position.gtkPaintExpander(object, window, state.type, area = NULL, widget = NULL, detail = NULL, x, y, expander.style)
object
GtkStyle
window
state.type
area
NULL
if the
output should not be clipped. [ allow-none ]widget
detail
x
y
expander.style