When Zoom is running in dual screen mode, it is briefly visible when OnlyM transitions to JW Library

[DaveBlaha]

Describe the bug When Zoom is running in dual screen mode for hybrid meetings, its video window is briefly visible on auditorium monitors when OnlyM gives control of the second monitor back to JW Library

To Reproduce Steps to reproduce the behavior:

1. Run Zoom is dual screen mode, with its video window showing on the second monitor
2. Open JW Library
3. Open OnlyM
4. Display an image on the second monitor with OnlyM
5. Stop showing the image with OnlyM
6. The Zoom video window is visible on the second monitor for a fraction of a second between the OnlyM image being closed and the JW Library display appearing

Expected behavior OnlyM should transition cleanly back to JW Library without the Zoom video window becoming briefly visible during the process

Desktop (please complete the following information):

• Windows 10 Home 21H2 desktop
• 11th gen i5 processor using onboard graphics

I've duplicated the same behavior on my home computer as well (also a Windows 10 Home 21H2 desktop).

[AntonyCorbett]

@DaveBlaha Thanks for your report. Whenever an application displays a window on the same monitor as the JW Library media window, the JWL media window is automatically minimized. You can try this yourself by launching notepad (for example) and moving it over the JWL media window. This behaviour is at the root of many issues when using JWL to display media.

When OnlyM displays media, JWL automatically minimizes its window (as described above). However, it sounds like you have "JW Library compatibility mode" enabled. This means that when you close the OnlyM display, OnlyM attempts to automatically restore the JWL window, and what you're seeing is this action - attempting to fix the fragility of the JWL media window.

A much better solution is to allow the JwlMediaWin service to take control of the JWL media window and prevent it from ever minimizing in the first place. If you use JwlMediaWin you won't need to enable "JWL compatibility mode" in OnlyM and there is no need for the JWL library media window to be restored.

https://github.com/AntonyCorbett/JwlMediaWin

Make sure that you deselect the "Always on top" setting otherwise Zoom won't get a look in!

[DaveBlaha]

Thank you for fast response, detailed explanation and an awesome solution! I installed JwlMediaWin, adjusted the settings as noted above, and everything looks great now switching back and forth between JW Library, OnlyM, VLC and Zoom.

Knowing now that JWL's window was actually getting minimized when another application took over the second monitor lets me understand things much better. I couldn't figure out why switching from JWL to VLC and then closing VLC always left Zoom's window showing instead of JWL. Now that actually makes sense, and JwlMediaWin makes it all better.

Thank you for all your work on these programs. It is very much appreciated!