Inserts a key/value pair into a GTree. If the given key already exists
in the GTree its corresponding value is set to the new value. If you
supplied a value_destroy_func when creating the GTree, the old value is
freed using that function. If you supplied a key_destroy_func when
creating the GTree, the passed key is freed using that function.
The tree is automatically 'balanced' as new key/value pairs are added,
so that the distance from the root to every leaf is as small as possible.
Inserts a key/value pair into a GTree. If the given key already exists in the GTree its corresponding value is set to the new value. If you supplied a value_destroy_func when creating the GTree, the old value is freed using that function. If you supplied a key_destroy_func when creating the GTree, the passed key is freed using that function. The tree is automatically 'balanced' as new key/value pairs are added, so that the distance from the root to every leaf is as small as possible.