Sorts the array, using compare_func which should be a qsort()-style
comparison function (returns less than zero for first arg is less
than second arg, zero for equal, greater than zero if irst arg is
greater than second arg).
If two array elements compare equal, their order in the sorted array
is undefined.
Note
The comparison function for g_ptr_array_sort() doesn't
take the pointers from the array as arguments, it takes pointers to
the pointers in the array.
Sorts the array, using compare_func which should be a qsort()-style comparison function (returns less than zero for first arg is less than second arg, zero for equal, greater than zero if irst arg is greater than second arg). If two array elements compare equal, their order in the sorted array is undefined. Note The comparison function for g_ptr_array_sort() doesn't take the pointers from the array as arguments, it takes pointers to the pointers in the array.