Handles vs Pointers.

[Ronnen Belkind]

Can someone explain this code to me.  Its taken from the MailLookup.c
    CallAddressApp function.

  /* some code */

params.title = MemHandleLock (DmGetResource (strRsc, titleStrID));
params.pasteButtonText = MemHandleLock (DmGetResource (strRsc,
                         mailLookupAddStrID));
params.formatStringP = MemHandleLock (DmGetResource (strRsc,
                         mailLookupFormatStrID));

 /* some code */

MemPtrUnlock (params.title);
MemPtrUnlock (params.pasteButtonText);
MemPtrUnlock (params.formatStringP);


Why do they lock the handle, but unlock the pointer.  Why not call
MemHandleUnlock?

Thanks,
Ronnen