Returns true if any of the cells packed into the tree_column are visible. For this to be meaningful, you must first initialize the cells with gtk.tree_view_column.TreeViewColumn.cellSetCellData
true, if any of the cells packed into the tree_column are currently visible
Deprecated: Use GtkColumnView instead
Returns true if any of the cells packed into the tree_column are visible. For this to be meaningful, you must first initialize the cells with gtk.tree_view_column.TreeViewColumn.cellSetCellData