Re: [Gimp-developer] PDB Procedures for External Progress Bars

On Thu, 27 Aug 2015 11:02:09 -0300
"Joao S. O. Bueno" <gwidion gmail com> wrote:

It should allow for the callback - and the behavior you describe is a
bug in the gimp=python.

As for any calls that require "-1" as a parameter for "nothing" or
"cancel" , they should take in
a Python's "None"  when used from Python.

On 27 August 2015 at 09:59, C. Jason. B. <c jason b gmail com> wrote:

I am tasked with creating (python using GTK) a plugin which will
utilize a great many other scripts and plugins within GIMP.  The
file which is being written runs in full screen mode most of the
time so the progress bars in The GIMP are obscured, which leads to
the use of an external progress bar.  But a snag has been
encountered.  While trying to register a temporary function from
within python, it balks at the number of parameters, and the
parameter it is refusing is the callback function.  A perusal of
the source code lead me to gimpmodule.c in the pygimp directory
(line 642).

I am not a c programmer, so I am attempting to translate this via my
knowledge of Python.

It looks, at first glance, as if this function does not allow for a
callback function to be passed in.  If so, how would one register a
temporary function from python?

On an additional note, the PDB function gimp_progress_init indicates
that a '-1' is passed to instruct it to use an external window for a
progress bar, but it chokes on that value with an error (either as
a string or an int).

I have found the functions which (in Python) are accessed via
gimp.progress_install, so I know that these can be used instead.
What I am trying to find out is if the PDB variants of this are
implemented, or am I using them in the wrong way?  If I am using
them wrong, would someone be kind enough to explain how they should
be used?

C. Jason B.
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