gaf@uucs1.UUCP (gaf) (12/06/90)
One of the things about Motif which has never been clear to me is under what conditions I'm expected to free memory which a library function has allocated. Should I free the result of an XmStringCreateLtoR() or an XmStringGetLtoR()? Does it matter whether I use free() or XmStringFree()? When I call XtSetValues() to set or change some XmString resource, can I free the XmString immediately afterward (i.e. do the library functions always make a copy of what I pass) or hang onto it forever? And, finally, why does nobody offer Motif classes at reasonable prices :-). (A few thousand a head plus T&L is too much for little companies like us) -- Guy Finney It's that feeling of deja-vu UUCS inc. Phoenix, Az all over again. ncar!noao!asuvax!hrc!uucs1!gaf sun!sunburn!gtx!uucs1!gaf
kaleb@thyme.jpl.nasa.gov (Kaleb Keithley ) (12/07/90)
In article <361@uucs1.UUCP> gaf@uucs1.UUCP () writes: > >One of the things about Motif which has never been clear to me is under what >conditions I'm expected to free memory which a library function has allocated. > >Should I free the result of an XmStringCreateLtoR() or an XmStringGetLtoR()? In general, yes. The release notes identify the exceptions to this rule, if you could call it a rule. >Does it matter whether I use free() or XmStringFree()? In 1.1, XmStringFree() just calls XtFree(). XtFree() checks for null ptr and calls XFree(), XFree() calls free(). >When I call XtSetValues() to set or change some XmString resource, can I >free the XmString immediately afterward (i.e. do the library functions always >make a copy of what I pass) or hang onto it forever? We do. >And, finally, why does nobody offer Motif classes at reasonable prices :-). >(A few thousand a head plus T&L is too much for little companies like us) We paid $1000/person (at least that's what was charged to our project) to have OSF teach Motif programming. Price included the Prentice Hall OSF/Motif documentation set. The course was well done, the instructor first rate. -- Kaleb Keithley Jet Propulsion Labs kaleb@thyme.jpl.nasa.gov You can please all of the people some of the time,