Touch Screen problems with adobe photoshop cs6

     photoshop cs6 works on sony vaio tap 20 windows 8 computer.  1 problem touch screen's compatibility photoshop.  inorder draw finger or pen, need select outside of boundary of canvas , drag inorder draw.  program works fine mouse , keyboard, touch screen want use.  or suggestions...

this has been addressed in forum before search on sony vaio. digitizer use in vaio made n-trig or , device driver use microsoft api interface hardware. photoshop not support api in favor of other api. so  adobe point finger @ n-trig , in turn point finger @ adobe.  more , more machine using n-trig hardware.  poor driver created n-tig hardware uses other api not work well. replace adobe software software supports hardware adobe software not....

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