<html> <head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> <div class="moz-cite-prefix">Hi Peter, Thanks for your reply :) Coordinate Transformation Matrix is so cool, my LeslieMT is too superficial <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1"> <a href="https://github.com/xiangzhai/myblog/blob/master/MTX11-Note/MT.conf">https://github.com/xiangzhai/myblog/blob/master/MTX11-Note/MT.conf</a> Even if LeslieMT is able to work, but it is not easy to configure the device path, for example, /dev/input/event3 might be changed when a Projected Capacitive touch screen USB device plug out/in or Linux box reboot. But it needs to read the device file descriptor to get 9 eGalax touch screen devices` (X, Y) value simultaneously, then recognize the proper gesture, so ugly and dull LeslieMT meets the "special" project requirement. Best Regards, Leslie </div> <blockquote cite="mid:20131022061417.GA465@yabbi.bne.redhat.com" type="cite"> <pre wrap="">On Sat, Oct 19, 2013 at 11:31:08AM +0800, Leslie Zhai wrote: </pre> <blockquote type="cite"> <pre wrap="">Hi Xorg developers, I use Projected Capacitive touch screen device <a class="moz-txt-link-freetext" href="http://en.wikipedia.org/wiki/Touchscreen#Projected_capacitance">http://en.wikipedia.org/wiki/Touchscreen#Projected_capacitance</a> It can be pasted on the normal monitor, then it is able to touch, the cursor will move to the position where touched. It experienced like iphone and other single touch screen device. But when I put multiple Projected Capacitive touch screen devices on several monitors, then touch some of them simultaneously, the cursor of X Window was only moving in the first monitor, even though it was able to move to other monitors` display, it still failed to show the correct position. </pre> </blockquote> <pre wrap=""> default behaviour is to map the device to the set of all monitors together. if you want to map a device to a specific montior you need to set the input transformation matrix. <a class="moz-txt-link-freetext" href="http://sourceforge.net/apps/mediawiki/linuxwacom/index.php?title=Dual_and_Multi-Monitor_Set_Up">http://sourceforge.net/apps/mediawiki/linuxwacom/index.php?title=Dual_and_Multi-Monitor_Set_Up</a> because output can change positions, size, orientation, etc. at any time there is no static (i.e. xorg.conf) option to configure this, it needs to be set at runtime. one matrix exists per device, so you can configure multiple touchscreens easily enough. Cheers, Peter </pre> </blockquote> </body> </html>