First "disappointment" found...
Whenever the video source is the DVR, I wanted to have a CQC template on the screen with one big button that takes up the entire screen. When touched, it would cause CQC to tell the switch to change the source to the PC. Of course the button would not be visible when the DVR was the source, but I figured it would be an easy way to switch back to CQC when necessary. Just tap on the screen.
It looks like the touchscreen driver senses when the video is not connected to the monitor (i.e., the switch is using a different source), and so it "disables" the touchscreen. For example, if I switch to the DVR, touch what was the monitor "desktop" somewhere, then switch back to the PC video output, the mouse pointer is still in the location it was in before I switched/touched. I read in the documentation that sleep/standby mode is not supported (no details on exactly what that means), but maybe this is a similar issue.
I emailed ELO tech support to get an official opinion.
If it won't honor a touch while in "DVR mode", I will have to come up with some other way to switch back to the PC/CQC. I guess I can do something via IR using the DVR remote. Another option would be to keep a wireless (RF, not IR, because the PC won't be that close or line of sight.) mouse next to the monitor and use it to click on the CQC button. That would also be handy when web surfing from the PC. The plan was to have the switch located out of the way, so manually switching it is not really an option I want to pursue at this point.
Ira