Path: utzoo!attcan!uunet!zephyr.ens.tek.com!uw-beaver!mit-eddie!bu.edu!rpi!zaphod.mps.ohio-state.edu!uwm.edu!ux1.cso.uiuc.edu!jason
From: jason@ux1.cso.uiuc.edu (char *myName)
Newsgroups: comp.sys.mac.programmer
Subject: Re: ResEdit TMPLs
Message-ID: <1990Sep29.015058.20304@ux1.cso.uiuc.edu>
Date: 29 Sep 90 01:50:58 GMT
References: <106625@tiger.oxy.edu>
Organization: University of Illinois at Urbana
Lines: 54

hammersslammers1@oxy.edu (David J. Harr) writes:

>I am trying to create a template for a custom resource in ResEdit. Since I
>was too cheap to buy the thing from APDA ("Money? What do you mean spend
>money? I pirated this fair ands square...") I find now that I am being bit
> by not understanding the size of the various parameters in the TMPL TMPL.
>There are several different sizes, including

>HWRD (half word = 1 byte?)
	Hex word: 2 bytes

>DWRD (double word? but that would be the same as a long, right?)
	Decimal word: 2 bytes

>ZCNT (a zero count, ie you take the number and add one to it)
	I think this refers to a zero-based counting scheme used with
certain list structures.  For instance, color tables have a word which is
one less than the number of entries in the table.

>HLNG (half long = 2 bytes? but that is the same as a word, right?)
	Hex long: 4 bytes

>FWRD (full word = 2 bytes?)
	Filler word: 2 bytes.  Two null bytes are inserted into the
resource structure, but an editable field does not appear where FWRD was
used.

>BBIT (I dunno)
	Boolean Bit?  Binary Bit?  I think this takes up one bit of a
word-sized object (or perhaps a byte-sized object) similar to

struct	{
	   Boolean   aBit : 1
	}...

>DLNG (double long = 8 bytes?)
	Decimal long: 4 bytes

>ESTR (dunno)
	Me either.  I suspect it is a type of string.  Pascal strings (PSTR)
will begin with a length byte.  C-style null-terminated strings (CSTR) will
end with a zero-byte.  Perhaps ESTRs are simply an alternative format for
strings ("empty" string, perhaps, as a single byte filler).

LST*s are used to create list structures of dynamic size.

Note: this information is free but may not be worth the price.  I too have
      not purchased the APDA materials.  This knowledge comes from my own
      hacking with TMPLs.
-- 

                       |  |    |====================|
                       |  |    | Jason Watts        |
                     \ |\ |\ \ | (jazzin@uiuc.edu)  |