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

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

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

Converts widget coordinates to coordinates for the tree view, the full scrollable area of the tree view.