> I already tried to answer your last mail directly to me > but you should not use unusable from/reply adresses like: > V K <hid...@paradise.net.nz> > when you like to have an answer.
Sorry I stuffed up the addresses, and I wasn't expecting an answer. Thanks for the patch, I'll try it out. > Selecting lineart should alsways remove the contrast abd brightness sliders. > There is no sense for this, you need a threshold slider! I agree, on both counts. There isn't a threshold slider though. > Sorry to say that, but it is a RTFM! (You can do this with xsane). Then it would be nice if you told me how. The docs are very good, but if you're referring to "Threshold: ... the backend needs to make available a threshold option." then man sane-hp doesn't care to say anything about threshold. The scanner supports grayscale, there is therefore no reason for the backend to not support threshold setting with lineart. However that's a moot point, because changing the threshold with the backend requires a rescan, which, from the user's point of view, is plain useless (because doing a gray scan and using image software is way faster than poking thresholds in the dark). The enhancement setup says under (grayscale->lineart) "Changes of the threshold value are visible in the preview window without a new preview scan." this is the only useful alternative. Whether the backend supports a threshold or not is pretty irrelevant, xsane should scan in grayscale and display a threshold slider, but I can't see one anywhere. I just went into Preferences->Setup->Enhancement and selected threshold option "XSane main window (grayscale->lineart)" and grayscale scanmode "grayscale" (though lineart etc. doesn't make a difference here). Exit save options, select Xsane mode "viewer", colour "Lineart", and the standard options show a slider for brightness and contrast, plus an auto-threshold button. If you don't believe me I can send a screen shot. As per your statement above this doesn't make sense - what am I missing? And where is the threshold slider? (The advanced options window doesn't have it either, thanks Henning!). xsane is so good I started to do all other operations without consulting the manual, except for the threshold with bi-tone scans, which I still can't figure out. One other minor point. The setup window has an apply-button, but xsane is grayed out while the setup window is open. Is there any point in having that button then? Thanks Oliver, Volker -- Volker Kuhlmann is possibly list0570 with the domain in header http://volker.orcon.net.nz/ Please do not CC list postings to me.
