gtk:tree-view-convert-widget-to-bin-window-coords (view x y)

view -- a gtk:tree-view widget
x -- an integer for the x coordinate relative to the widget
y -- an integer for the y coordinate relative to the widget

bx -- an integer for the GDK window x coordinate
by -- an integer for the GDK window y coordinate

Converts widget coordinates to coordinates for the GDK window, see the gtk:tree-view-bin-window function.