qsort()-style comparison function
data to pass to comparison function
a function to free the memory allocated for the key used when removing the entry from the #GTree or %NULL if you don't want to supply such a function
a function to free the memory allocated for the value used when removing the entry from the #GTree or %NULL if you don't want to supply such a function
Return: a newly allocated #GTree
ConstructionException GTK+ fails to create the object.
Creates a new #GTree like g_tree_new() and allows to specify functions to free the memory allocated for the key and value that get called when removing the entry from the #GTree.