Hi,
I am developing Desktop/UWP application on windows 10. And I have a little development experience with WDM/WDF.
My vendor has a request to do that display a customized OSD (on-screen display), like windows 10 volume OSD, when a specific hot key is pressed.
The customized OSD will displayed for a few seconds and must be displayed on the top overlay everything.
AFAIK, it is impossible in normal application.
I already try the win7 audio osd example (https://github.com/microsoft/Windows-classic-samples/tree/master/Samples/Win7Samples/multimedia/audio/osd),
and read this article: "How do I create a topmost window that is never covered by other topmost windows?" (https://devblogs.microsoft.com/oldnewthing/?p=11253)
I also use the keyword "OSD", "on screen display" to search, but no found useful answer to me.
Our application/driver will bundle in windows 10 device.
1. Is there a way to request some privilege let application to to that?
2. Can driver do that? what kind of driver?
P.S.
Tags request but, I can not key any relative tag.
It show: The following tags do not exist, and you don't have permissions to create new ones: Windows 10, OSD, on screen display, desktop, driver
Thanks,
Emmett