How to get latest QtDragon?

Are you running linuxcnc as an 'installed' version ie. you didn't compile the code first to run?

Can I just grab the handler file from github?

I did not compile. Can I just grab the whole QtDragon_HD directory in github?

I would grab the .ui file too. Try that - it should work - I don't see any related widget code changes needed.

I have to got to work soon so can't help much further today

The HD version of qtdragon has a resolution of 1920 x 1080. This takes the whole screen of an HD monitor. It is started in maximized mode with no title bar. If the bottom is cut off, you likely have the bottom panel turned on. To turn it off in debian, right click the panel, select panel settings and enable auto-hide panel. Other distros may have similar settings, I don't know as I only use debian. HTH

Thanks Jim,

I see this now, I had to hide top and bottom bars. Funny it has issue in 4k screen, but once fixed in 1920x1080 screen by hiding bars it now works in 4k.

For Raspberry Pi OS, under Panel Preferences -> Advanced, you have to enable Automatic Hiding AND also change "Size when minimized = 0 pixels"; default of 2 pixels didn't work.