gtk:tree-model-foreach (model func)

model -- a gtk:tree-model object
func -- a gtk:tree-model-foreach-func callback function to be called on each row

Calls func on each node in model in a depth-first fashion. If func returns true, then the tree ceases to be walked, and the gtk:tree-model-foreach function returns. The gtk:tree-model implementation is deprecated since 4.10. Please do not use it in newly written code.