Registry key 'control Panel\Desktop'?

[MichaelAtOz]

While looking into other issues, I happened to run OpenSCAD with Process Monitor

When starting OpenSCAD, after a lot of other stuff, immediately before being ready to accept user input, it had hundreds of:

08:52:51.0252321    openscad.exe    6036    RegOpenKey  HKCU\Software\Policies\Microsoft\Windows\Control Panel\Desktop  NAME NOT FOUND  Desired Access: Read

Subseqent activity also referenced the registry key frequently.

Any idea what it is looking for in/under Desktop?

[kintel]

This might be some stuff going on internally in Qt. Qt uses Windows registry for application preferences. Perhaps looking for recent files or smth.?

A quick Google didn't tell me much. Perhaps you could try removing/editing the OpenSCAD registry settings and see if that changes the behavior?

[MichaelAtOz]

OpenSCAD settings are in/under: HKCU\Software\OpenSCAD\OpenSCAD e.g. HKCU\Software\OpenSCAD\OpenSCAD\advanced\openCSGLimit
HKCU\Software\OpenSCAD\OpenSCAD\recentFileList

It is trying: HKCU\Software\Policies\Microsoft\Windows\Control Panel\Desktop & HKLM\Software\Policies\Microsoft\Windows\Control Panel\Desktop (it tries both)

I progressively added the items to my registry.

It is looking for: HKLM\SOFTWARE\Policies\Microsoft\Windows\Control Panel\New Key #1\FontSmoothingGamma & HKCU\Software\Policies\Microsoft\Windows\Control Panel\New Key #1\FontSmoothingGamma (New Key #1 - is what registry editor defaults when adding a key, so it is dodgy) It tries ~300 times (ie ~150 each of above), when OpenSCAD is started. It tries ~72 times, just clicking the file menu.

Seems to be related to cleartype fonts, but they are usually in: HKEY_CURRENT_USER\Control Panel\Desktop which OpenSCAD does not access.

So I put this down to a mis-config in QT somewhere. I have not noticed any font issues, so leave sleeping flea-bug-infested dogs lie.