gtkD: How to paint to screen for animation

[Michelle Long]

On Tuesday, 19 March 2019 at 15:33:19 UTC, Ron Tarrant wrote:
> On Tuesday, 19 March 2019 at 00:54:34 UTC, Michelle Long wrote:
>> I've added a function to addOnDraw for a DrawingArea and it 
>> paints using the code I have when I resize.
>>
>> I added a queueDraw in threadsAddIdle and it seems to draws 
>> the screen immediately but it does not seem to be called again.
>>
>> If I put queueDraw inside the addOnDraw routine then the 
>> animation works but it is quite slow, about 1 fps and cpu 
>> usage is 100% without it, it is 0%.
>
> I haven't dug into this stuff yet for my blog, but I have 
> sourced some references. Here's one that may help:
>
> https://www.cairographics.org/threaded_animation_with_cairo/

Not really what I'm after(maybe later).  Seems the code was 
running quite fast but I thought it should have displayed the 
results faster