kraftwerk

I'm a bit confused because of the Max API (for C-external programming).

short open_dialog(char *name, short *volptr, long *typeptr, long *types, short ntypes);

I only get the actual name of the file and not the complete path. In the documentation they say that the path is handled separately in a path ID (in this case the short *volptr), but how do I get the actual path as a character out of this?

When calling the open_dialog message:
short open_dialog(char *name, short *volptr, long *typeptr, long *types, short ntypes);

I only get the actual name of the file and not the complete path. In the documentation they say that the path is handled separately in a path ID (in this case the short *volptr), but how do I get the actual path as a character out of this? 

open_dialog, filename, filepath