How do show a screen on Windows10 when in control?

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How do show a screen on Windows10 when in control?

Postby JonathanS » 2021-04-14 05:00

I was reviewing UltraVNC and before Windows 7/10 you could (when you take control) bring up a screen - something like a PLEASE WAIT MAINTENANCE IN PROGRESS with a picture (or something - does not need to be fancy) - but it seems to have been tied to functionality which no longer works for Windows10? Is this correct? Is there no way with Windows10 to show some customer screen or images or message? The only options found so far are to leave it as-is (so the user sees the maintenance) or to blank it completely (where the user wonders if the monitor died)!

Any help, feedback, or suggestions would be appreciated.
Thanks,
JonathanS
 
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Re: How do show a screen on Windows10 when in control?

Postby Rudi De Vos » 2021-04-14 18:23

Sorry, win10 doesn't have a layer that you can exclude for capturing.

The latest versions of ultravnc have the extend desktop with virtual a displays.
Local 1 screen, remote 2 screens
If you work on the second it's invisible and you can show some message on 1
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Re: How do show a screen on Windows10 when in control?

Postby JonathanS » 2021-04-14 18:36

This response is very interesting and promising - and it may resolve much of my concerns if I am understanding it correctly. In Windows XP/7 we used a VirtualDisplay Adapter (3rd party SW) which created a 2nd display (virtual) and we would VNC to that screen (worked like a charm for decades) - however with Windows10 we were no longer able to use our VirtualDisplay Adapter (not supported) and were forced to plug in a VGA/DVI dongle to have Windows10 create the virtual display (and this is costly) so instead we put everything on the physical primary display and this introduced two big problems:
- We can no longer put our PLEASE WAIT screen on the physical screen (because that is where we now VNC)
- We need to disable INPUT (as you noticed from my other post) because now the user can interfere where they could not before (as it was all on a virtual display hidden)

With that background I am very interested in what you are saying about an EXTEND DESKTOP with a VIRTUAL DISPLAY - it sounds like what we had for Windows XP/7 in the past but instead of using a 3rd party SW Virtual Adapter not UltraVNC is able to do it for us? Do you have any more details or documentation on this? What version was it introduced in?

Thank you very much for all the feedback and support!!!
JonathanS
 
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Re: How do show a screen on Windows10 when in control?

Postby JonathanS » 2021-04-14 20:20

Subsequently - doing some research about the Virtual Display you mentioned - can it be persistent (always there) so we can move windows/applications to it at boot of operating system (Windows10) and VNC to it when needed or does it only get create upon connect of the VNC Client (and each time we would need to move the windows we need over?).

We are using the discussion (here) as a reference:
viewtopic.php?f=77&t=36842
JonathanS
 
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Re: How do show a screen on Windows10 when in control?

Postby Rudi De Vos » 2021-04-14 20:35

Download bin zip.
extract UVncVirtualDisplay64
Using the device manager->display adapters->add legacy hardware->and select the inf from this folder.
When i remember correct, then it was installed permanent.
We had a lot of trouble to make it act as an usb connected screen that plugin on viewer connect.
Having an invisible screen isn't handy when a part of the app opens on it :)

Only the supported sizes are limited as the viewer normal pass the correct desktop size to the driver.

Introduced 1.3.0 but you need 1.3.2, to many viewer bugs between 130 and 132
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