I think this makes sense!

I am 👍🏻 on this and adding the note to the message itself as well.

Note that it was also suggested to deprecate tostring_argb (#25484 (review)). In the use case of mne-python (mne-tools/mne-python#11574?) I would suggest using e.g. np.array(canvas.buffer_rgba()) instead.

I would suggest using e.g. np.array(canvas.buffer_rgba()) instead.

It seems like this should be the suggested replacement then, right?

It's not really a direct replacement, as the channel order is not the same; it depends on what exactly you want (but in the case of MNE python you're really just checking that the values are the same, so the channel order doesn't matter). Also this doesn't do the conversion-to-a-string that in MNE-python's case gets immediately undone by np.frombuffer.

Okay pushed an updated version!

Since you're touching this file, can you also rename it to 25484-AL.rst?

@QuLogic done!