Re: mouse int 33 dos app under win xp

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

From: madhouse (madhouse_at_discussions.microsoft.com)
Date: 08/04/04 

Date: Wed, 4 Aug 2004 10:15:02 -0700

Thanks Sten, that'll explain it then!
ce la vie.

The app already handles l & r simultaneous button clicks but users (&me!) find it very difficult to sync the button presses so i did'nt persevere with it. l & r returns value 3, does the ntvdm return that?

Thanks again Sten, I really appreciate your assistance.

"Sten Westerback" wrote:

>
> "madhouse" <madhouse@discussions.microsoft.com> wrote in message
> news:E848527C-55D8-40AC-AD14-2D17ABAC5EC6@microsoft.com...
> > Hi
> > Have old dos app calling int 33 for mouse clicks, int 33 returns values
> 1,2,4 in register bx for left,right,middle buttons.
> > Under win 98 all ok.
> DOS apps run in DOS in that "OS"...
>
> > Under win xp middle button not return.
> Here the NTVDM emulates a DOS session and it has it's own mouse driver
> which supports the basic two button features...
> In fact.. i used by XDIR application to get the emulated hardware's
> information:
> "2 button InPort mouse using IRQ2"
> So as the emulated HW doesn't have but two buttons there is no driver that
> would enable it.
>
> So... at most, if the DOS mouse driver and/or your DOS app supports
> it you might be able to simulate middlebutton by clicking Left and Right
> simultaneously... try it. :)
>
> - Sten
>
>
>

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