Keith, On preOpen... the control or card isn't open yet and you can't get a screenshot of it yet. A stacks or card needs to load completely before you can do such things. A very clear example is e.g. the impossibility to get the dimensions of a player if the movie of that player is being loaded duing a preOpenStack handler and the stack is invisible.
You might want to load a "please wait" picture first and load your custom image on openCard. -- Best regards, Mark Schonewille Economy-x-Talk Consulting and Software Engineering Homepage: http://economy-x-talk.com Twitter: http://twitter.com/xtalkprogrammer KvK: 50277553 New: Download the Installer Maker Plugin 1.6 for LiveCode here http://qery.us/ce On 1 apr 2011, at 12:31, Keith Clarke wrote: > Hi folks, > I'm working on a presentation stack, which has a home card with a set of > buttons with thumbnail images (as the icon) that navigate to other cards in > the stack. The other cards are evolving, so I'm trying to create an > auto-update script to renew the navigation button thumbnail icon images when > the home page is re-opened. I'm guessing that the script should end-up in a > pre-open card script and iterate through a list of buttons, but I'm trying to > get one button to work first. > > Can anyone advise on what am I doing incorrectly with this script? > > on preOpenControl > import snapshot from the rect of card "Example" > set the icon of me to it > end preOpenControl > > Best, > Keith.. _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
