Overview : when to assign the Observed diagram?

GoXam
1

Hi,

I’ve been playing with the demo version of goWpf a bit.

The Overview control has been puzzling me a bit. When trying to assign the Observed property from the main control constructor, right after the diagram is created, the Overview doesn’t display anything, although the BoxTemplate is working fine, moving/resizing to reflect actual diagram area. Funny thing is that new Nodes are displayed when added, but existing diagram is missing.

If I assign the Observed property “later” (e.g. in a Command from a button), it works fine, displaying the diagram as expected.

Any operation that needs to be done before assigning the diagram to the Observed property? Anything I’m missing?

Thanks.

B.

2

When you try to set up the Overview before the observed Diagram has been initialized there isn’t anything yet for the Overview to see. So I would do something like:

// setup the Overview control later, when both controls have been initialized this.Loaded += (s, e) => { myOverview.Observed = myDiagram; };

3

Thanks for the fast response!

Tried it, works fine of course!

You might want to clarify a bit that part in the documentation (at least the Intro doc that came with the demo), it probably couldn’t hurt.

B.

4

That’s a good idea. Thanks for the reminder.