Qt4/KDE4 software under 10.14

[René J.V. Bertin]

On Thursday October 11 2018 05:06:51 Richard L. Hamilton wrote:

>What "them"?  The KDE folks?  Apple?  I thought Qt4/KDE4 was unsupported.

Apple. It shouldn't matter for them whether Qt4/KDE4 is supported or not, this is a compatibility issue for older/legacy apps.
I know their target population has shifted, but traditionally they had a large user base for whom such things were very important.

>I gather Qt4 has -graphicssystem { native |  raster | opengl }

I wasn't aware of the "native" option but it should have the same effect as settingRasterOff=1 in the environment (for KDE4 apps).

>open -a kshisen --args -graphicssystem native
>
>it does NOT blink - at first glance, it looks fine.

That would be great news, just *maybe* Apple fixed something which caused native rendering to be troublesome in KDE4 apps?
I'd have to run KDE4 apps with native rendering for a while on my system to see if there are in fact any issues with it (when using QCurve).

>open -a kshisen --args -graphicssystem opengl
>
>then text appears, but all the graphics are blank until I move the window (!), at which time it's fine.

The OpenGL backend is experimental; if anything it causes lots of terminal output.

>Supposedly raster could have been faster than native on some platforms, so I suppose I can see that it might have become the default.  But I don't see that native was slow, although kshisen is not demanding, and I may not have run it before on this relatively new hardware back on High Sierra, so I might not notice speed anyway.

Either way, slower is better than psychedelically flashy...

R