You only need to pass a message if you don't want another handler for that message to possibly get in the way. If you don't have a keyDown handler in any of your scripts in the message path, the engine will get and handle it.
On Mon, May 23, 2016 at 9:13 AM, Paul Dupuis <p...@researchware.com> wrote: > In LiveCode some messages must be passed to the engine for the engine's > normal processing of the message. And with current versions of LC you > have the very handy 'pass <message> to top' to send it directly to the > engine. > > For example, rawkeyDown must be passed for LiveCode to handle key > presses other than what you are trapping (unless you want all keypresses > trapped). Some message line preOpenStack you don't need to pass. The > stack still opens without passing a preOpenStack to the the engine. > > Does anyone have a compiled list of which messages need to be passed or > *should* be passed vs those that you do not have to concern yourself with? > > In some dictionary entries, like for rawKeyDown, it talks about the need > to pass the message (unless you want to trap all key presses). In other > dictionary entries it is not clear whether the message needs to be > passed or not. I am not sure that if it doesn't state one way or another > assuming one way or another is wise. > > I know there have been some excellent flow charts of LiveCode's message > passing hierarchy (Richard Gaskin's comes to mind) but I don't recall > seeing any summation of which messages should be passed vs which do not > need to be? > > > _______________________________________________ > 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 > -- On the first day, God created the heavens and the Earth On the second day, God created the oceans. On the third day, God put the animals on hold for a few hours, and did a little diving. And God said, "This is good." _______________________________________________ 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
