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

view -- a gtk:tree-view widget
x -- an integer with the x coordinate relative to GDK window
y -- an integer with the y coordinate relative to GDK window

tx -- an integer with the tree x coordinate
ty -- an integer with the tree y coordinate

Converts GDK window coordinates to coordinates for the tree view (the full scrollable area of the tree view).