Vaughn.
LC is event driven. In order to run your "doMath" handler, a "doMath" message must be generated. Now how to do this? 1- You could send the message directly from some object, or the message box. (send "doMath" to this card) 2- A system message generated by some other action might work. Try this: Make a button. Put this in its script: on mouseUp doMath end mouseUp When you click on the button, the engine generates a "mouseUp" message with that button as the "target". The handler in that button is trapped and executes, and its only task is to generate a "doMath" message. This message is examined along the message hierarchy, as Jacque outlined, starting with the button itself, and is eventually trapped by the "doMath" handler in the card script. This will work. Having two "doMath" handlers in different places is frequently useful, but here is redundant, and possibly dangerous. Again, as Jacque pointed out, the hierarchy is a profoundly powerful tool to organize and systemetize message handling. Try this out. But you simply must play around a bit with a few of your own projects, and it matters not how sensible or simple they are, they will teach you an enormous amount. But again, you do not yet have the fundamentals. Can you put your "doMath" thing in the button itself? Make an address book or a calculator. Anything at all. You have to practice on the computer, not read the documents. Craig -----Original Message----- From: Vaughn Clement <vclem...@gmail.com> To: How to use LiveCode <use-livecode@lists.runrev.com> Sent: Fri, Sep 13, 2013 11:55 am Subject: Re: Trying a custom handler for several math fields Hi All Well my first attempt ever to use a custom handler (OK :- ( Well I thought I understood what to do, but as things go I didn't get the expected result: In the card control field, I put this pass call; on doMath pass doMath end doMath in the card script I put this script; on doMath put field "Loan Balance 1" + field "Loan Balance 2" into field "Loan Balance Total" -- set the numberFormat to "#.00" -- dollar format testing to see if it worked "No" end doMath The fields both had the pass call to send the math to the card handler. Thank you Vaughn Clement Apps by Vaughn Clement (Support) *http://www.appsbyvaughnclement.com/tools/home-page/* Skype: vaughn.clement https://secure.join.me/appsbyvclement FaceTime: vclem...@gmail.com LogMeIn also avaialble Call on "ooVoo" at address: vaughnclement or 9282549062 Ph. 928-254-9062 Cloud Hosting Registration Web Site: https://my.oditech.com/cart.php?a=add&pid=41 On Thu, Sep 12, 2013 at 7:30 PM, stephen barncard < stephenrevoluti...@barncard.com> wrote: > On Thu, Sep 12, 2013 at 7:17 PM, Vaughn Clement <vclem...@gmail.com> > wrote: > > > The same thing happened when I used a > > comma for the divider of hundreds. So that kills the scripts. I did not > > find anything that tells you how to solve this? I tried the dictionary > for > > answers but nothing was doing it! > > > > strip the offending characters before calculating, then put them back. > > > -- > > > > Stephen Barncard > San Francisco Ca. USA > > more about sqb <http://www.google.com/profiles/sbarncar> > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your > subscription preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode > _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
