MouseDown sent to button in group, but MouseUp sent to card

Dr. Hawkins dochawk at gmail.com
Thu Aug 3 11:28:08 EDT 2017


On Thu, Aug 3, 2017 at 5:54 AM, dunbarx via use-livecode <
use-livecode at lists.runrev.com> wrote:

>
> Note: If there is no mouseWithin handler in the target object's script, no
> mouseWithin message is sent, even if there is a mouseWithin handler in an
> object that's further along the message path.
>
> Why this should be so is a mystery, but maybe someone from the team will
> chime in.
>

I've always assumed that that and similar case was due to the performance
penalty for checking and sending messages on older machines; I think that
mouseWithin dates to hypercard which ran on 8mhz 16 bit processors . . .

-- 
Dr. Richard E. Hawkins, Esq.
(702) 508-8462



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