Hi all,
Thanks for all of the help with this. Unfortunately, I still can't get it
to work. All of this approach works for creating a CFString, but Cstring()
is still returning weird characters on Windows. It's specifically the
CString from the REALstring which is causing problems, rather than the
CFString creation. For some reason, the CString just isn't coming back out
correctly on Windows from within the plugin code. (It's fine when set and
retrieved in RB).
I've spent ages pulling my hair out over this one, so I think I'm going to
try a different approach - perhaps using declares for this bit, and then
passing in CFObject references to the plugin instead.
Dave.
> From: Eric Baumgartner <eric at inquirium dot net>
> Reply-To: REALbasic Plugins <realbasic-plugins at lists dot realsoftware dot
> com>
> Date: Thu, 26 Jan 2006 18:37:02 -0800
> To: <realbasic-plugins at lists dot realsoftware dot com>
> Subject: Re: CFStrings on Win32
>
>> From: Dave Addey <listmail1 at dsl dot pipex dot com>
>> Date: Thu, 26 Jan 2006 15:37:15 +0000
>>
>> I tried this (where inParameters->Location is a REALstring):
>>
>> const char *LocationCString =3D REALCString(inParameters->Location);
>> if (LocationCString =3D=3D NULL)
>> {
>> return -1;
>> }
>> =20
>> CFStringRef LocationCFString =3D CFStringCreateWithCString(NULL,
>> LocationCString, REALGetStringEncoding(inParameters->Location));
>> if (LocationCFString =3D=3D NULL)
>> {
>> return -1;
>> }
>>
>> This second call always returns NULL.
>
> Probably because you aren't specifying an allocator. (At least,
> that's the obvious difference I see.) Here's what I use.
>
> /* Utility function to convert string format.
> REAL provides an API for this but it only works on Mac.
> Caller is reponsible for releasing the CFString reference.
> */
> CFStringRef ConvertREALstringToCFString(REALstring str) {
> const char *cstr;
> CFStringRef theCFString;
>
> // We're assuming that REALCString returns a pointer to
> data, and doesn't create
> // something we need to dispose of.
> cstr = REALCString(str);
> theCFString = CFStringCreateWithCString(kCFAllocatorDefault,
> cstr, REALGetStringEncoding(str));
> return theCFString;
> }
>
> Eric Baumgartner
> Inquirium
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