Re: set-frame-parameter a child-frame's 'parent-frame error on macOS ?

[Dmitry Gutov]

On 1/15/18 12:38 PM, martin rudalics wrote:
> Still not much luck with the video.  I'm told that my video driver
> accelerators do not support the resolution 1854x2110 so they are
> deactivated.  The result is that I see all sorts of artefacts.

Might software rendering work, then? The way to use it depends on the 
video player, etc.

> Anyway, it seems that the "good" frame appears around 00:34 and its
> "bad" double around 00:35 of the video.  Is that correct?  If so,
> please post simple screencaps with the corresponding timings.

I've sent a scaled-down video, hopefully it works. Not sure what you are 
looking for on the screenshots, though. I can try describing them with text.

> And
> also please resolve the discrepancy with what Feng Shu says here:
>
>    when I want to show company-child-frame-menu at <position>, I support
>    this position is (20, 50), but before show menu about 0.1s, this menu 
> will be showed
>    at positon (10, 25), and dispear and then show at position (20, 50),
>    this is so fast, let menu look flicker.
>
> namely that the bad frame appears first.

That is the description of my experience with Robert's patch applied. 
Without it applied, the "bad frame" appears last (at position 40-100, 
approximately).

Feng Shu has changed his code since to call set-frame-position much less 
often, and it seems to work correctly *without* Robert's patch. Quite weird.