In Rhino 7 our application (JewelBeetle) was able to interact with both the Viewports and a Command Dialog such as Sweep 2 Rail Options dialog. While the command is running, the dialog although appears modal, still allowed you to interact with the Viewport. In Rhino 8 we just get the windows error…

RH-85097 is fixed in Rhino 8 Service Release 31

Hey Jake, Dales out this week. Curtis and I are reviewing now. SR15 is going out today so I’m thinking any fix would take place in SR16 at the earliest?

Any help is appreciated. Having a way forward will be very helpful, whenever it can be found. Thank you for your efforts.

And its just the semi-modal dialogs that are the issue?

I’m not really certain but I believe that is correct, since these dialogs show but you are supposed to still be able to interact with the viewport. I know that it is the dialog that is displayed when running these specific commands: Make2d, QuadRemesh, RibbonOffset, ShrinkWrap, SubDLoft, SubDSweep1…

Gotcha, sounds like the ETO semi-modal dialogs are where we need to poke around. Thanks. We’re looking into a solution now.

Hi @jstevenson , Eto based “semi-modal” dialogs should now work correctly when Rhino is reparented in 8.16. In my testing, Make2D is not a semi-modal dialog so you can’t interact with the viewport even normally but the others should work great. Thanks for the sample, it really helped reproduce the…

Thank you so much Curtis/Travis! We are griding away on the final touches of JB this week. I will put this update through our tests this evening and reply back marking the solution if everything works. Thanks again!

Thank you sir! This is completely fixed for us now. You guys rock! Keep up the great work.

I hate to revive an old topic, but we just discovered today that the Print dialog is also exhibiting this original issue. There is a Set… button which is supposed to let you select the area from the viewport, however we are getting the same “bing” sound and cannot interact with the viewport. I ver…

Hi @jstevenson , I was able to repeat using your SampleFocusIssuePlugin project (way above). A fix is under way. Thanks, – Dale

Rhino 8 - Modal Dialogs Issue

Rhino Developer

dale (Dale Fugier) June 8, 2026, 9:35pm 38

Hi @jstevenson,

Does this help?

– Dlae

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Rhino 8 - Modal Dialogs Issue

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