Problem resizing a stack

Peter Haworth pete at lcsql.com
Mon Aug 27 17:36:17 CDT 2012


Well I thought I had this problem licked but as usual, LC manages to
provide some last minute surprises.

The stack in question is destined to be a modeless plugin.  I've been doing
90% of my testing with it as a regular toplevel stack, not a plugin and the
fix for this problem (locking/unlocking messages around the stack resize)
worked fine.

Today I ran it as a modeless plugin and all is messed up again.  Not only
does the stack not resize correctly, but the group that I am attempting to
show only randomly shows up.  To make matters worse, attempts to debug fail
because neither a debug breakpoint nor a breakpoint command cause it to
break (the code is in a preOpenCard handler).


Pete
lcSQL Software <http://www.lcsql.com>



On Fri, Aug 24, 2012 at 5:01 PM, <dunbarx at aol.com> wrote:

> It has become standard practice to:
>
>
> send yourMessage in 0 millisec
>
>
> instead of
>
>
> just put some code after openCard/openStack,etc types of handlers. I hate
> that this might be so, but it seems to account, or at least forgive,
> certain timing and event queue issues that are inherent in those types of
> messages.
>
>
> Try it. I don't think there is a formal methodology for it all, it just
> seems to work. The fact that you can step through code, but not execute in
> real time, makes me think it could solve the problem.
>
>
> Craig Newman
>
>
>
> -----Original Message-----
> From: Peter Haworth <pete at lcsql.com>
> To: How to use LiveCode <use-livecode at lists.runrev.com>
> Sent: Fri, Aug 24, 2012 6:09 pm
> Subject: Problem resizing a stack
>
>
> A stack I'm working on has a group at the bottom that, at startup, needs to
> be hiddenor visible depending on preference setting.
>
> I want to adjust the bottom of the stack depdning on whether the group is
> hidden or not.
>
> In a preOpenCard handler, if  the preference requires the group to be
> hidden and it is not already hidden, I get the stack's rectangle, subtract
> the height of the group from item 4 of the rectangle, then set the stack's
> rectangle to the new value.
>
> When I step through the code that does this in debug, the stack height
> changes correctly, but when the code is executed without a debug
> breakpoint, the bottom of the stack doesn't change position.
>
> Is there some timing issue I need to be aware of when changing stack sizes
> like this?
>
> Pete
> lcSQL Software <http://www.lcsql.com>
> _______________________________________________
> use-livecode mailing list
> use-livecode at 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 at lists.runrev.com
> Please visit this url to subscribe, unsubscribe and manage your
> subscription preferences:
> http://lists.runrev.com/mailman/listinfo/use-livecode
>


More information about the use-livecode mailing list