cell_get_size

Description:

public void cell_get_size (Rectangle? cell_area, out int x_offset, out int y_offset, out int width, out int height)

Obtains the width and height needed to render the column.

This is used primarily by the TreeView.

this	A TreeViewColumn.
cell_area	The area a cell in the column will be allocated, or null
x_offset	location to return x offset of a cell relative to `cell_area`, or null
y_offset	location to return y offset of a cell relative to `cell_area`, or null
width	location to return width needed to render a cell, or null
height	location to return height needed to render a cell, or null