gtk:tree-selection-mode (object)

object -- a gtk:tree-selection object
mode -- a gtk:selection-mode value

The accessor for the mode slot of the gtk:tree-selection class gets or sets the selection mode of the selection. If the previous type was :multiple, then the anchor is kept selected, if it was previously selected. The gtk:tree-selection implementation is deprecated since 4.10. Please do not use it in newly written code.