On 6/26/08, eagleskycloud <eagleskycloud at gmail.com> wrote: > > Hi, > > I want to accurately scan A4 paper(210mmx297mm),but there is not > A4(210mmx297mm) item in preset area drop down box in preview window of > XSane.
my version of Xsane (.95) has DIN A3, A4, and A5, both in portrait and landscape. I add 210mmx297mm item in the preset area drop down box. XSane exit > and output segmentation fault in console after I select 210mmx297mm and I > don't click the scan button. chances are your backend did something weird when xsane changed the x and y params, like some math that produced a negative scan area? put in some debugging and see if you can reproduce it. > The 210mmx297mm item that I just added has > not already in the drop down box when I run XSane at the second time. because it crashed before saving your change. > I drag > and adjust the scan size to 210.31mmx297.15mm, then click the scan button > and the scan is OK . I couldn't accurately drag and adjust the scan size to > 210mmx297mm. How to accurately scan A4(210mmx297mm) size? it may not be possible to set those exact sizes, that depends on your backend, and the fact that the x and y values are SANE_FIX/SANE_UNFIX, things always get rounded a little bit, depending on the size of your 'quant'. but some of this might be clunkyness in the xsane interface- try using a command line front-end like scanimage, and see if you can set the sizes there. allan -- "The truth is an offense, but not a sin"
