OpenEuphoria

Re: get_mouse() in mode 19

• Posted by Robert Craig <rds at EMAIL.MSN.COM> Dec 12, 1997
• 688 views

Michael Packard writes:
> I KNOW I need to divide it by two.  I'm asking is it supposed to work
> like this? If so, WHY?!? Why would the y be reported correctly and x
> be doubled?  And if it's supposed to be like this why isn't it
> mentioned in the manual?

It wasn't supposed to work this way. Something strange
is happening in DOS or the mouse driver. The two
machines that I tried it on both double the x value
in all graphics modes that have 320 pixels left to right,
and work ok in all other VGA or lower modes, even the
ones with 350 pixels across.

I'm going to update the docs on get_mouse()
to warn people that in graphics modes that are 320 pixels
wide, the value reported will be double
what it should be. i.e. divide the x value by 2 and you should
be ok. I don't know why this happens. Does anyone
know of a machine where this *doesn't* happen?

I could do the divide by two in the interpreter, but I might
break some existing code, and I'm still not 100% sure that
it would be the correct thing to do on all machines.

There's also a problem with the mouse in
SVGA modes. People should use one of
the solutions provided by Jiri or Peter Blue
(and one or two others) for SVGA.

Regards,
     Rob Craig
     Rapid Deployment Software