> '?' indeed! I am fascinated! What does yield do exactly... presumably it > returns a result from the function without closing down that instance of > the function? Amazing concept.
I suspect - given the word "DOS" in some of the code, it allows a DOS event loop to continue in a single threaded co-operative multitasking environment. A bit like Application.ProcessMessages in Delphi or Application.DoEvents() in DotNet. You can probably do other things at the same time, but Yield says this to me (maybe my old Mac programming hat as the Toolbox has a similar API.) If so, it's probably a little redundant now and use of threads could get around the problem (or even using the Application object from Lazarus API to implement the "processmessages"/yield part?) _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
