[RESOLVED] Using Windows 10, HDMI and monitors as an Embedded System

[passel]

You can have access to every pixel, if you want, so that isn't an issue, e.g. use a borderless form to fill the monitor, assign a bitmap to fill the form, and then you can access the pixels of the bitmap, either directly using the bitmap object (which is slow), or by maintaining an array in memory that maps to the pixels so you can update the memory quickly and refresh the bitmap from that memory.

There is no need to try to do things at a controller level. Especially if you say you would like to use an HMI library. No library is going to bypass windows to work at a controller level for a given specific hardware interface.

If VB would not be a good choice, then C# seems like it would also not be a good choice, as they are two sides of the same coin.
If your programming preference is C# over VB, then that is reasonable, but it has nothing to do with the ability of the language to do the job.

I'm sure there are plenty of choices for libraries out there. Just doing a search for "gui gauge library" and this was one of the first links hit. Looking at the example images, perhaps some of those example are similar to the type of controls you would like to have.
Also, since it is at least Free to get started, it wouldn't cost you anything but time to try it out.