[Lazarus] Threads and Libraries (dll and so)

[Reimar Grabowski]

On Tue, 4 Feb 2014 14:40:21 +0100 (CET)
Michael Van Canneyt <michael at freepascal.org> wrote:

> The GUI is for use by humans. That means that there is no point whatsoever 
> in updating the GUI more than 10 times per second: the human eye cannot 
> process information faster than that, let alone that the brain can grasp 
> the *meaning* of what the eye has seen in such a short time.
<snip>

> if I play a video at full HD, 1 thread handles the screen display. It works just fine,

Combining these two statements sounds like you are running your video at 10 frames per second, which you hopefully don't do.
And I am very interested where you got the limitations for the human eye from. Knowing a thing or two about animation I have heard quite different values.
Examples:

Nearly everyone I know at least feels a difference between an animation running in 60 FPS and one in 30 FPS (both frame rates need the eye and brain to process faster than your claimed 10 updates a second, else there would be no difference).

The USAF tested their pilots visual response time by flashing a picture of an aircraft on a screen in a dark room for 1/220th of a second. The pilots were consistently able to identitfy the shown craft.

There are more examples but I am not interested in starting a discussion about this.

Closing I must admit that for a GUI 10 FPS is mostly enough. It is just that 1/10th of a second as the human eyes limit sounds way to low to me.

R.