Can get the dimensions of a picture somehow before it is actually visible in runtime?

Hello everybody,

did anyone find a solution for the described situation from "Milov"?

I have a symbol which opens a PopUp when I click on it. The size of the PopUp is not always the same and to do a proper positioning of the PopUp I need to know the size of it before it gets opened. Unfortunately, the size is only set after the PopUp is set to "Visible".

Right now I do the positioning afterwards which leads to some kind of ugly flashing on the first opening.

Has anyone a good idea how I could solve that "flashing issue"? Can I get the dimensions of a picture somehow before it is actually visible in runtime?

Thanks for any help,

BR

MAB_cc

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Split from How to get size of .PDL picture with C script.