white windows/stacks?

[Mark Schonewille]

Hi Paul,

It is no memory issue. Revolution just happens to forget to (re)draw  
the window.

One of the scenarios that may cause this is:

-- mainstack
on preOpenStack
   lock screen
   lock messages
   go invisible stack x
   -- set rect of stack x e.g.
   -- then show stack
   show stack x --substack
end preOpenStack

It doesn't happen all the time, but script similar to the above may  
cause a white screen. Apparently, Rev doesn't get the time to update  
the window.

To solve this issue, usually I try something like this:

-- mainstack
on preOpenStack
   send "showMe" to stack x in 0 millisecs
end preOpenStack

-- substack
on showMe
   go invisible cd 1 of me
   set the bottomright of me to -100,-100
   -- set rect of me
   -- then show me
   set the loc of me to the screenloc
end showMe

I hope you get the idea. I don't have a specific recipe but usually  
try something along these lines.

Best regards,

Mark Schonewille

--

Economy-x-Talk Consulting and Software Engineering
http://economy-x-talk.com
http://www.salery.com

Quickly extract data from your HyperCard stacks with DIFfersifier.  
http://differsifier.economy-x-talk.com


Op 22-aug-2007, om 21:11 heeft Paul Gabel het volgende geschreven:

> Hi everybody:
>
> Do any of you know all of the reasons (or as many as you can think  
> of) why opening a stack by script could cause it to show white and  
> blank? This happens to me sometimes. In the Rev Window menu, the  
> blank window is checked, and when I manually item-select it the  
> blank window returns to normal. This will happen repeatedly with  
> the same window. Is it a memory issue?
>
> Thanks for any contributions.
>
> Paul Gabel
> Scotts Valley, California, USA