Hi,

Steve Lipa <[EMAIL PROTECTED]> writes:

> 1) My plug-in converts images into integrated circuit or
>    printed circuit board layouts.  (You might use it to
>    put your company logo on a chip.)  Thus it registers
>    file save handlers.   On the other hand, it does not
>    make sense to try to convert layouts to images, so 
>    there are no corresponding file load handlers.  However,
>    after using my plugin to save logo.jpg as logo.cif,
>    for example, the File/Open Recent menu will include
>    an entry for logo.cif.   Is there anything my save 
>    handler can do to dissuade GIMP from adding logo.cif
>    to this list?

I don't think there's a way to prevent that from happening.

> 2) I haven't quite figured out how the help system works.
>    I think I have all of the software installed correctly, 
>    including the CVS version of gtkhtml2 and 
>    all of the stuff mentioned in devel-docs/README.gtkdoc.
>    When I hit the F1 button, the GIMP Help Browser appears
>    but so does a GIMP Message informing me that my
>    gimp-help.xml file is missing.

Look at the latest release of the gimp-plugin-template or
gimp-freetype (from CVS). They install the gimp-help.xml file that
defines how to map help IDs to URLs.

>    I am further confused by the fact that gimp-plugin-template-1.3.2
>    installs
>    PREFIX/share/gimp-plugin-template/help/C/gimp-plugin-template.html
>    while the RGB-mixer plug-in (which seems to be based on the
>    gimp-plugin-template) installs its help as
>    PREFIX/share/gimp/1.3/help/C/filters/RGB-mixer.html

The latter is wrong since the plug-in should install into it's own
prefix. But as long as the gimp-help.xml is installed into a unique
place, it doesn't really matter since the plug-in also registers
the base URL for the help pages. See
http://developer.gimp.org/api/1.3/libgimp/libgimp-gimpplugin.html#gimp-plugin-help-register

>    I notice that the RGB-mixer plug-in has a GTK_STOCK_HELP button
>    in its dialog but none of the standard plug-ins seem to.  Is
>    there any particular reason that I should either include or not
>    include a GTK_STOCK_HELP button?

The standard setup for GIMP plug-ins is not to have a help button but
to bind to F1 for help.

>     Also, I cannot type anything into what appears to be a URL entry
>    area in the GIMP Help Browser.  Is this possibly because I have
>    installed something wrong? 

No, the combo box is simply not supposed to be used to type things
into.

>    Could someone please provide a simplified overview of how the
>    help system works and maybe point me towards what I need to read
>    to figure out how to test my plug-in's help pages?  I am mainly
>    interested in knowing if I need to provide xml files (I don't
>    know anything about xml but will learn if I have to...) or if I
>    can get away with html, where they really need to be installed,
>    and how to tell the GIMP where to find them.

You need to install a (very simple) gimp-help.xml file that defines
where the help (in HTML format) is installed and how it is associated
to the identifier(s) your plug-in registers. You will not need
anything but a vague idea about XML in order to adapt the example XML
file to your needs. If you really want to understand how it works, you
will need a basic understanding of XML namespaces though.

Detailed instructions appeared earlier here on this list when the
implementation was discussed. You should be able to find them in the
list archives.


Sven
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