[pygtk] Help with pygtk save_to_callback

[Michael Urban]

Hi all,

I need some help using the pixbuf safe_to_callback method. Basically, what I need to do is take a pixbuf, and save it to an in memory buffer in jpg format that I can dump to a db. I'm running into two main problems:

1: The callback seems to get called multiple times. So calling pixbuf.save_to_callback apparently doesn't pass all of the buffer in one call, but make several calls to the callback.

2: Simply trying to append onto the end of a buffer that you build incrementally does not work. It causes a gobject.GError write function failed.

Can anyone give me a simple example of how I would write a callback function for pixbuf.save_to_callback that would build an in memory buffer that stores the image in the given file type?

Thanks in advance for any help.


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