gtk:grid-view-max-columns (object)

object -- a gtk:grid-view object
max -- an unsigned integer for the maximum of columns

The accessor for the max-columns slot of the gtk:grid-view class gets or sets the maximum number of columns that the grid will use. This number must be at least 1. If the max-columns property is smaller than the minimum set via the gtk:grid-view-min-columns function, that value is used instead.