Calls func on each node in model in a depth-first fashion.
If @func returns %TRUE, then the tree ceases to be walked, and gtk_tree_model_foreach() returns.
a function to be called on each row
user data to passed to @func
See Implementation
Calls func on each node in model in a depth-first fashion.
If @func returns %TRUE, then the tree ceases to be walked, and gtk_tree_model_foreach() returns.