RE: [pygame] Speed of mouse position capture

["Brian Bull" <Brian.Bull@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx>]

> -----Original Message-----
> From: owner-pygame-users@xxxxxxxx 
> [mailto:owner-pygame-users@xxxxxxxx] On Behalf Of Brian Fisher
> Sent: Monday, 15 May 2006 4:51 p.m.
> To: pygame-users@xxxxxxxx
> Subject: Re: [pygame] Speed of mouse position capture
> 
> On 5/14/06, Brian Bull 
> <Brian.Bull@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> > Dear list,
> >
> Hey Brian
> 
> > I am encountering one difficulty, which is that the speed of mouse 
> > position capture seems quite slow. I had expected that the 
> app would 
> > receive a MOUSEMOTION event every time the mouse shifted to a new 
> > pixel, and that connecting up the locations of these MOUSEMOTION 
> > events would give an almost exact representation of the path of the 
> > mouth across the screen. However, what happens in practice 
> is that, if 
> > the mouse is moving fast, consecutive MOUSEMOTION events 
> can be separated by more than 20 pixels.
> >
> I've run into the exact same problem and done some testing & research.
> Read this blog entry by a microsoft guy:
> http://blogs.msdn.com/oldnewthing/archive/2003/10/01/55108.aspx
> 
> So basically it's not a pygame or SDL problem, it's a windows thing.
> Windows throws out data before sending mouse motion messages 
> (which seems like bad design to me, but oh well)
> 
> Also, my cousin has tested on Linux (debian I think) and I 
> tested on Mac (OS X, not sure with version) for the same 
> problem, and I haven't seen it on either of those (meaning 
> pygame was getting mousemotion messages to describe the movement well)
> 
> 
> > Is there a way to make Pygame sample the position of the 
> mouse more often?
> >
> The only thing I found that could help was to call one of the 
> event handling functions (pygame.event.pump works) because 
> they would call a windows message handling func which would 
> make windows keep another mouse position, but you'd have to 
> have a good way to call it a bunch of times during a frame.

Oh. Could you please post an example of this? Wd be much appreciated.
 
Brian 

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