What you are looking for is:
set the text of button “myMenu” to “myMenuList”
This can be called in a variety of handlers, at the latest in a mouseDown
handler in the menu button itself.
Here is an example I used with my student the other day. They were supposed to
make an application where the user should choose a starting point and an ending
point for a journey, from a list of places along the route. This is a situation
where you would like to filter out the starting point from the possible choices
as ending point, and it is a good example of what you want to achieve. Here is
a script in the menuPick handler in the first menu, that sets the options for
the second menu:
on menuPick pItemName
put the text of me into tText
repeat with i = 1 to the number of lines of tText
if pItemName = line i of tText then
delete line i of tText
exit repeat
end if
end repeat
set text of button "No 2" to tText
show button "No 2"
end menuPick
This script could also be put in a mouseDown handler in the button called “No
2” with som alterations:
on mouseDown
put the text of button “No 1" into tText
put the label of button “No 1” into tStart
repeat with i = 1 to the number of lines of tText
if tStart = line i of tText then
delete line i of tText
exit repeat
end if
end repeat
set text of button "No 2" to tText
show button "No 2"
end mouseDown
The number of "case entries" (menuLines) for an option menu, only apply to
Windows and Linux, as they will show the option menu as a combo-box. The
menuLines property defines how many lines will be displayed in the drop down
list of a combo-box, without the need for scrolling. The total number of items
in the menu can be any number, as the user can scroll further down the list in
the combo-box.
Tore Nilsen
> 9. feb. 2016 kl. 20.44 skrev Francis Nugent Dixon <effe...@wanadoo.fr>:
>
> Hi from Sunny Brittany (at least it was this morning !),
>
> After many years of using buttons in my stacks, I am
> discovering the joys of using “Pull Down” menus (and
> about time too !).
>
> I can change the script “cases” with the “set script” command,
> but I also want to know how to change the value of the menu options
> on the fly, for example, if I have a menu option “Show Table”
> in my button, once I have shown the table, how can I modify
> the menu option to show “Hide Table”, assuming that I also
> set the case in the script to the new value, with new instructions.
>
> I thought that it was possible to modify any button/field options
> on the fly, but I can’t grab the syntax of this requirement.
>
> I also see that the number of case entries is defined in the button
> specs. Can I change this also, or do I just set a maximum value
>
> I know that Klaus has played with menus (seen on forums)
> Maybe he has an answer ?
>
> -Francis
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