Initializes and sets @value to that at @column.
When done with @value, g_value_unset() needs to be called to free any allocated memory.
the #GtkTreeIter-struct
the column to lookup the value at
an empty #GValue to set
See Implementation
Initializes and sets @value to that at @column.
When done with @value, g_value_unset() needs to be called to free any allocated memory.