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From: time@tbomb.ice.com (Tim Endres)
Newsgroups: comp.sys.mac.programmer
Subject: RE: Drawstring Question
Message-ID: <1CE00001.ale2i0@tbomb.ice.com>
Date: 3 Dec 90 19:29:57 GMT
Reply-To: time@tbomb.ice.com
Organization: ICE Engineering, Inc.
Lines: 57
X-Mailer: uAccess - Mac Release: 1.0.3


In article <31268.275A511A@stjhmc.fidonet.org>, Chris.Gehlker@p12.f56.n114.z1.fidonet.org (Chris Gehlker) writes:
> > Now there is a new problem:
> > Since I am using a drawing Window as my output medium, I can not use
> > the standard output functions (printf). I want to display the values of
> > some variables though. Since I have to use DrawString, this seems to be
> > a problem. For example, how do I draw a properly formatted floating
> > point number?? Drawstring does not give you formatting options and
> > seems to require a string. How do you get around this ?? Any ideas??
> 
> I guess num2str() is a well kept secret. Apple documents it in the SANE
> Manual rather than in IM. Anyhoo, it's:
> void num2str(decform *, extended, void *); in SANE.h. A decform is a
> struct that set the style to normal or scientific and tells the function how
> many decimal points to use for rounding.  You pass it an Str255 in the final
> argument and it fills it in for you.  Then you pass it to DrawString().
> 
> See the following fragment:
> ...
> extended x = 1.2345;
> Str255outString;
> decformf;
> ...
> f.style = FIXEDDECIMAL;
> f. digits = 8;
> num2str(&f, x, outString);
>  DrawString(outString);
> ...

--- OR ---

static char		drawf_string[512];

/*
** NOTE: The limitation on the number of arguments.
**       You may specify more if you need them.
*/
drawf(format_str, arg0, arg1, arg2, arg3, arg4, arg5)
char	*format_str;
char	*arg0, *arg1, *arg2, *arg3, *arg4, *arg5;
{
	sprintf(drawf_string, format_str,
			arg0, arg1, arg2, arg3, arg4, arg5);
	c2pstr(drawf_string);
	DrawString(drawf_string);
	}

main()
{
	drawf("Print %s", "Hello World");
	}


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