gtk:selection-model-select-range (model pos n-items unselect)

model -- a gtk:selection-model object
pos -- an unsigned integer for the first item to select
n-items -- an unsigned integer for the number of items to select
unselect -- a boolean whether previously selected items should be unselected

True if this action was supported and no fallback should be tried. This does not mean the range was selected.

Requests to select a range of items in the model.