Arrows Keys and List Fields
ambassador at fourthworld.com
Fri Jan 11 13:12:41 EST 2008
Gregory Lypny wrote:
> I have a list field, and as I use the Up and Down keys, I want to
> display the contents of individual lines in another field. The list
> field's handler below displays the lagged line and not the one that
> was keyed to because the selected line doesn't change until the pass
> arrowKey command is invoked and that has to happen at the end for the
> line to change.
> Not sure how to get what I want.
> on arrowKey theKey
> if theKey is "Up" or theKey is "Down"
> put the value of the selectedLine of the target into fld "Display"
> pass arrowKey
> end if
> end arrowKey
If you trap the selectionChanged message instead of arrowKey, you'll not
only get the message when you want it but also have an update when the
mouse is used to, from the same handler. You can also get the value of
the selected line by using the hilitedText property:
put the hilitedText of the target into fld "Display"
Also, the "left" and "right" arrow keys have the same automatic behavior
as "up" and "down" respectively, so this selectionChanged handler will
handle those as well.
Managing Editor, revJournal
Rev tips, tutorials and more: http://www.revJournal.com
More information about the use-livecode