[wix-users] How to use WcaReadStringFromCaData?

[Edwin Castro]

To be explicit, if you really want to use semicolon separated list of
name=value pairs (a perfectly valid approach), then you need to parse
custom action data yourself. You can't use WcaReadStringFromCaData since
the format of the custom action data is different that what
WcaReadStringFromCaData expects.

--
Edwin G. Castro


On Thu, Jul 20, 2017 at 8:36 AM, Hoover, Jacob <Jacob.Hoover at greenheck.com>
wrote:

> https://www.firegiant.com/wix/tutorial/events-and-actions/
> at-a-later-stage/
>
> Or..
> "Should we need to pass more than one piece of information, we have to
> devise a way to incorporate them into this single property, for instance,
> to use a semicolon separated list of Name=Value pairs."
>
> Ex:
> <CustomAction Id="MyAction.SetProperty" Return="check" Property="MyAction"
> Value="Param1=[SOME_PUBLIC_PROPERTY];Param2=[ANOTHER_PROP];" />
>
>
>
> -----Original Message-----
> From: wix-users [mailto:wix-users-bounces at lists.wixtoolset.org] On Behalf
> Of Edwin Castro
> Sent: Wednesday, July 19, 2017 6:26 PM
> To: WiX Toolset Users Mailing List <wix-users at lists.wixtoolset.org>
> Subject: Re: [wix-users] How to use WcaReadStringFromCaData?
>
> Normally you'd use WcaWriteStringToCaData (and it's siblings) to create
> your custom action data in an immediate custom action. If you're creating
> the custom action through a different mechanism then you'll want to ensure
> the correct separator is used somehow.
>
> --
> Edwin G. Castro
>
>
> On Wed, Jul 19, 2017 at 1:02 PM, Joel Budreau <joel.budreau at gmail.com>
> wrote:
>
> > More Info:
> >
> > Today I pass ca data like "param1;param2", so I have added code
> > similar to this in my custom action:
> >
> >    // Replace ";" delimiters with wcautil-friendly 'magic' delimiter
> >    WCHAR delim[] = { MAGIC_MULTISZ_DELIM, 0 }; // magic char followed
> > by NULL terminator
> >    hr = StrReplaceStringAll(&pwzCaData, L";", delim);
> >    ExitOnFailure(hr, "Failed to replace CustomActionData delimiters");
> >    pwz = pwzCaData;
> >    hr = WcaReadStringFromCaData(&pwz, &pwzParam1);
> >    ExitOnFailure(hr, "Failed to parse Param1.");
> >    hr = WcaReadStringFromCaData(&pwz, &pwzParam2);
> >    ExitOnFailure(hr, "Failed to parse Param2.");
> >
> > This seems to defeat the purpose of using the 'magic' character in the
> > first place, right?
> >
> > - Joel
> >
> > On Wed, Jul 19, 2017 at 12:39 PM, Joel Budreau
> > <joel.budreau at gmail.com>
> > wrote:
> >
> > > I'm looking to write a deferred custom action that parses the
> > > CustomActionData property by using wcautil's
> > > WcaReadStringFromCaData() function. I populate the CustomActionData
> > > property through a Type51
> > custom
> > > action in the MSI.
> > > - How do I go about changing the delimiter from MAGIC_MULTISZ_DELIM
> > > to something else?
> > > - Do I author the {0x80,0} character inside my wix source?
> > > - Am I supposed to be authoring the CustomActionData through another
> > > immediate custom action??
> > >
> > > Thanks,
> > > Joel
> > >
> >
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> >
>
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