Re: [Gimp-user] Debugging register function for registration of a python plugin under Windows XP

[Ofnuts <ofnuts laposte net>]

On 14/06/14 17:54, SeldomNeedy wrote:
> Debugging register function for registration of a python plugin under Windows XP
>
> Hey, all.
>
> I've started writing plugins in Python for GIMP but have so far only been able
> to successfully register a plugin via the following form:
>
> # in C:\Program Files\GIMP 2_8\lib\gimp\2.0\plug-ins
> # synch-current-frame.py
>
> def synch_current_frame(*args):
>          # code
>          return
>
> register("synch_current_frame",
>           N_("Adjust layers to the current animation-frame."),
>           howTo,
>           "Needthistool",
>           "Needthistool",
>           "June 2014",
>           N_("_Synchronize Layers to Current Frame"),
>           "",
>           [],
>           [],
>           synchronize_to_frame,
>           menu="<Toolbox>/Layer/Stack",
>           domain=("gimp20-python", gimp.locale_directory)
>           )
> main()
>
> Changing the leading category from "<Toolbox>" to "<Image>" or "<Layer>" seems
> to immediately break something and cause GIMP to skip over the script, as does
> adding tuples to describe parameters to the first list.
>
> I'm aware that Linux users can see what errors are raised by register during
> startup but I'm not aware of how to do this with Windows. The Error Console and
> builtin Python shell seem only to display errors from plugins that are able to
> first load in correctly and show no record of what GIMP did while it was
> loading. After I'm past that, things are straight-forward, but at present I have
> no idea what I'm doing right or wrong as I register a function and currently
> have to "pass" parameters to plugins in some awkward ways, unable to achieve
> gimpfu registration with parameters. To avoid this, I need to debug the register
> function's registration, which happens at startup, where errors are hidden.
>
> How do I avoid flying blind on Windows (XP) with GIMP 2.8.8?
>
> Thanks,
> - Seldom

traceback (most recent call last):
  File "/home/me/.gimp-2.8/plug-ins/badone.py", line 7, in <module>
    register("synch_current_frame",
NameError: name 'register' is not defined


In practice you are missing "from gimpfu import *" at the beginning of 
the file.

Additionally, <Toolbox> is deprecated (since at least Gimp 2.6). you 
should be putting your menu entry in "<Image>" (the window displaying 
the current image), or in "<Layers>" (the right-click menu in the layers 
list), but the latter requires your plug-in to take image and drawable 
parameters.

Debugging Python plugins under Windows isn't too easy. I just made a 
small write-up on the subject:

http://gimpforums.com/thread-debugging-your-python-scripts-using-the-python-fu-console