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From: rick@Jessica.stanford.edu (Rick Wong)
Newsgroups: comp.sys.mac.programmer
Subject: Re: GetIndString, where is the reverse?
Keywords: GetIndString C ToolBox
Message-ID: <4192@Portia.Stanford.EDU>
Date: 22 Nov 88 18:58:44 GMT
Sender: news@Portia.Stanford.EDU
Reply-To: rick@Jessica.stanford.edu (Rick Wong)
Distribution: comp.sys.mac.programmer
Organization: Stanford University
Lines: 35

In article <7010@claris.com> drc@claris.com (Dennis Cohen) writes:
>In article <1012@ccnysci.UUCP> cpyang@ccnysci.UUCP (Chao Ping Yang) asks:
>>
>>	[How do you set a string in a string-list resource?]
>>
>
>One way to do this is to call GetResource, DetachResource, RmveResource,
>AddResource, and UpdateResFile with the appropriate arguments.
>
>		. . . if you are modifying a string somewhere in the
>middle of an STR#, be sure that you move everything after it to correctly
>adjust to the new length.
>
>The safest method is to create a handle to a new item, build your resource
>in it, and then add it to the resource file (after removing the one that it
>replaces).  Be sure to check your error returns at all points through this
>process.
>

An easier method is to use everybody's favorite trap, Munger, which will
correctly adjust the location of all following strings.  To make sure the
Munger call succeeded, you can call GetHandleSize before and after to see
if the final handle size is what you expected.

In case you need to know the format of a 'STR#' resource, it's a two-byte
integer indicating the number of strings, followed by Pascal-format strings.
Since the strings can have different lengths, you'll have to do some pointer
arithmetic to access a particular string.  If you are at a string, you can
get to the next one by adding the string's length byte to the current value
of your pointer.  Be sure to treat the length byte as an unsigned value.

>Dennis Cohen

Rick Wong
Courseware Authoring Tools Project, Stanford University