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

object -- a gtk:grid-view object
min -- an unsigned integer for the minimum of columns

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