STOOP@KVI.NL ("P.Stoop, KVI, Zernikeln 25, 9747 AA Groningen, NL") (12/15/89)
Netters,
Can anyone tell me how to ring the bell from within a GEM application?
From a TOS program it's no sweat, i know: printf("%c", 7); works fine.
If you try this from a GEM application you just get the symbol for char(7)
somewhere on you screen. I suppose there shoud be a VDI output function for
this but my MEGAMAX manual does not list such a function.dag@per2.UUCP (Daniel A. Glasser) (12/20/89)
In article <0B4A9973765F4011CF@KVI.nl>, STOOP@KVI.NL ("P.Stoop, KVI, Zernikeln 25, 9747 AA Groningen, NL") writes: > Can anyone tell me how to ring the bell from within a GEM application? > From a TOS program it's no sweat, i know: printf("%c", 7); works fine. > If you try this from a GEM application you just get the symbol for char(7) > somewhere on you screen. I suppose there shoud be a VDI output function for > this but my MEGAMAX manual does not list such a function. This is relatively easy so long as you don't care about porting this program to non-ST/STE/TT platforms. There is a sound daemon built in to TOS that allows you to make sounds and continue the normal flow of your program concurrently. The function is called Dosound, and is XBIOS function #32 (decimal). Dosound takes a single parameter which is a pointer to an array of unsigned bytes. This array contains commands to the sound daemon which load various sound chip (and psudo) registers and commands which control looping and sound output. It returns a pointer to the current sound list position (usually NULL) so interrupted sound lists can be restarted (though this may cause rather odd results -- no sound register contents are preserved) or so you can detect when the sound has completed. See your compiler's documentation for more details. I'd type in an example, but I don't have any real ST documentation here with me at work. (I've got a copy of xbios.h from the MWC dist, so I know the XBIOS function number and number of parameters, but that's all.) Anyway, using Dosound should work just fine, and allows much more interesting sounds than just the bell (how 'bout a gun-shot, siren, bomb, or laser rifle?) I hope this helps. Daniel A. Glasser Trapped in the body of a IBM PC programmer. -- _____________________________________________________________________________ Daniel A. Glasser One of those things that goes uwvax!per2!dag "BUMP!!!(ouch)" in the night. ---Persoft, Inc.---------465 Science Drive-------Madison, WI 53711-----------