gtk:tree-view-column-cell-position (column renderer)

column -- a gtk:tree-view-column object
renderer -- a gtk:cell-renderer object
xoffset -- an integer for the horizontal position of the cell within the tree view column
width -- an integer for the width of the cell

Obtains the horizontal position and size of a cell in a tree view column. If the cell is not found in the column, nil is returned.