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About WebPicture.Preload function


There is a nice undocumented function Preload on the WebPicture class in Real Studio 2011r1. You can use it to load a picture to the browser without displaying it. This is very useful for a slide show where you want to have all picture local. So your code has this steps:
  1. Create picture somewhere
  2. Call Preload to load it. (e.g. in webpage.shown event)
  3. Use it later with some other event like a button action.
As the picture is preloaded, it will show instantaneously.

Check in Web Inspector (Safari) to see when picture is loaded to the website. There is a similar extension available for Firefox, I think.

Download test project: preloadtest.zip
27 03 11 - 14:28