No subject

[Alan Gayne]

Dear Ken & Dick,

In fact, both versions work just fine, IF the intial "startRolling" 
command is sent to my text field from an outside message source, such 
as the a button or the message box.

"send "startRolling" to fld "topic text""

But the need to use a button to get things started, kind of defeats the 
intuitive nature of the original concept.  After all, if you need a 
button to start, why involve the field at all?  You could just use the 
button to start, stop and resume the scrolling.

So, is there any way to the initiator into the field script AND to get 
the scrolling to stop and resume with alternate clicks?

Thanks in advance,
Alan Gayne

> Subject: Re: "Rolling Credits" - Stop them and start them again
> To: How to use Revolution <use-revolution at lists.runrev.com>
> Message-ID: <BE4FC506.80CA%dick.kriesel at mail.com>
> Content-Type: text/plain;	charset="US-ASCII"
>
> On 3/5/05 3:51 PM, "Alan Gayne" <alanira9 at mac.com> wrote:
>
>> first click - nothing.  second click, text scrolls about 1 pixel, then
>> nothing.
>
> The first click would have no effect because variable "sPaused" hasn't 
> been
> initialized as "false."
>
> The text would not scroll further because handler "rollCredits" never 
> sends
> "rollCredits," because variable "maxscroll" hasn't been initialized, 
> because
> nothing executed "startRolling."
>
> On 3/5/05 12:20 PM, "Ken Ray" <kray at sonsothunder.com> wrote:
>
>> on CancelPending pWhat
>>   if pWhat = "" then put "all" into pWhat
>>   switch pWhat
>>   case "all"
>>     repeat with x = (the number of lines of the pendingmessages) down 
>> to 1
>>       cancel (item 1 of line x of the pendingMessages)
>>     end repeat
>>     break
>>   default
>>     repeat with x = (the number of lines of the pendingmessages) down 
>> to 1
>>       if line x of the pendingMessages contains ("," & pWhat & ",") 
>> then
>>         cancel (item 1 of line x of the pendingMessages)
>>       end if
>>     end repeat
>>     break
>>   end switch
>> end CancelPending
>
> There's a way to do that a little simpler and faster.  It's simpler 
> because
> it has no switch. It's faster because it invokes "filter" instead of 
> testing
> each line within a loop.
>
> on cancelPendingMessages pMessageName
>   -- note: empty implies cancel all pending messages
>   put the pendingMessages into tPendingMessages
>   if pMessageName is not empty then
>     filter tPendingMessages with "*," & pMessageName & ",*"
>   end if
>   repeat for each line tPendingPessage in tPendingMessages
>     cancel item 1 of tPendingPessage
>   end repeat
> end cancelPendingMessages
>
> I hope this helps, without offending Ken.
>
> -- Dick