gtk:list-header-start (object)

object -- a gtk:list-header object
start -- an unsigned integer with the start position of the section

Accessor of the start slot of the gtk:list-header class. The gtk:list-header-start function gets the start position in the model of the section that object is currently the header for.

If object is unbound, the gtk:+invalid-list-position+ value is returned.

Since 4.12