Generic function
Returns the children predicate function of the specified tree control.
tree-control-children-predicate tree-control
=> children-predicate
<tree-control>.
<function>.
duim-gadgets
duim-gadgets
Returns the children predicate function of tree-control.
<tree-control>, page 679
tree-control-children-predicate-setter, page 683
tree-control-children-generator, page 684