Fills the bounding rectangle in bin_window coordinates for the cell at the row specified by
path and the column specified by
path is null, or points to a node not found in the tree, the
fields of the rectangle will be filled with 0. If
column is null, the
width fields will be filled with 0. The returned rectangle is equivalent to the
background_area passed to
render. These background areas tile to cover the entire bin window.
Contrast with the
cell_area, returned by get_cell_area,
which returns only the cell itself, excluding surrounding borders and the tree expander area.
a TreePath for the row, or null to get only horizontal coordinates
a TreeViewColumn for the column, or null to get only vertical coordiantes
rectangle to fill with cell background rect