Thanks using makefilename along with a save message to pix_buffer in conjunction with pix_buffer_write and pix_buffer_read is working very well.

Just curious. Why is it a design failure,

it combines three unrelated things:

• taking snapshots from the current framebuffer
• generating filenames
• saving pixes to disk

...

which alternatives should be used?

[pix_snap] + [pix_buffer] + [makefilename]

jim