[sane-devel] SANE2 proposal

[Frank Zago]

> Another suggestion: Many scanners can return quite detailed error
> information, like "lamp failure", "optical hardware error", "mechanical
> hardware error", "5V fuse blown", "memory error" and whatever else. A
> frontend could call a function like
>
> 	SANE_String sane_verbose_error(Sane_Handle h)
>
> to read some details about the last error. Printing this stuff might
> save users a few gray hairs.

I second that. I have that problem too.
What about a SANE_STATUS_HW_ERROR. A frontend would handle it like
SANE_STATUS_IO_ERROR, but it would call a backend function that returns
a string for the error and display it.

Frank.