Re: [Freeglut-developer] Multi-touch contact ID and device ID

[John T. <nu...@me...>]

On Tue, May 16, 2017 at 04:12:44AM +0000, Vinnie Simonetti wrote:

> Related, though I believe there's a different thread for it: should we
> have a device ID in the
> Multi callbacks? If so, given the YEARs the feature has been out, how
> should we add the
> device ID? I don't know how many people use the Multi callback, but
> changing it would
> obvious break it. That could be covered in a changelist or a wrapper
> callback, but I'm just

I never used multitouch, so I don't know if there's a better way to do
this, but a generic non-intrusive way of adding extra information to an
existing callback would be to add a glutGet for it.  Something like
glutGet(GLUT_LAST_MULTI_DEVID);

-- 
John Tsiombikas
http://nuclear.mutantstargoat.com/