topic Re: Jig causes entities disappear in ObjectARX Forum

Jig causes entities disappear

yysy112 — Mon, 04 Nov 2024 08:47:14 GMT

Hi all,

During my jig process, if I keep zooming the screen until the "regen" process is called, all of the entities disappear.

1. It seems built-in jig will prevent the "regen" to be triggered. You can't zoom when a regen limit is hit. How to do that? any examples?

2. Is there any way to regen and show during jig process?

many thanks.

Re: Jig causes entities disappear

daniel_cadext — Tue, 05 Nov 2024 06:23:32 GMT

If I zoom way out in a drawing, begin drawing a line, then start zooming in, eventually I see a message on the status bar saying

“Cannot zoom in further while a command is active”

I also found this:

https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/AutoCAD-Zoom-only-works-up-to-a-certain-scale-when-command-is-active.html

Re: Jig causes entities disappear

yysy112 — Tue, 05 Nov 2024 09:10:46 GMT

hi daniel,

Thanks for your reply. I tried to do my jig process in a command, it just works as you said.

But if my jig process is called by a modeless dialog, the "zooming scale limit" does't work then.

In my case, I have a modeless dialog. I hit a button, a circle is created and the jig process starts.

Re: Jig causes entities disappear

tbrammer — Tue, 19 Nov 2024 17:03:20 GMT

A modeless dialog runs in "session context" and not in document context. This affects the behaviour of AutoCADs graphic system. Also modeless dialog boxes must handle the WM_ACAD_KEEPFOCUS message as explained here to keep the focus. I suppose that you must avoid to keep the focus while the jig is running.

The cleanest solution is to register a modal command that executes your jig and start it with AcApDocManager::sendStringToExecute() as explained here. Hide and/or "deactivate" your dialog while the command runs and re-activate it when it ends.

Also use

AcAxDocLock lock; // your jig here...

to lock the current document before you start the jig. Maybe this already helps.

Re: Jig causes entities disappear

yysy112 — Thu, 21 Nov 2024 09:00:35 GMT

Thanks for your reply.

AcApDocManager::sendStringToExecute() seems to be the only way to solve my problem.