http://bugs.winehq.org/show_bug.cgi?id=23947
--- Comment #15 from Jay Hilliard jaydhilliard@gmail.com 2013-06-07 14:11:01 CDT --- Oh, and my output from xsetpointer shows the device, which works with pressure sensitivity in gimp and other native non-wine applications.
$ xsetpointer -l input 2: "Virtual core pointer" [XPointer] 3: "Virtual core keyboard" [XKeyboard] 4: "Virtual core XTEST pointer" [XExtensionPointer] 5: "Virtual core XTEST keyboard" [XExtensionKeyboard] 7: "AT Translated Set 2 keyboard" [XExtensionKeyboard] 8: "CHICONY HP Basic USB Keyboard" [XExtensionKeyboard] 9: "Power Button" [XExtensionKeyboard] 10: "Power Button" [XExtensionKeyboard] 11: "PS/2 Generic Mouse" [XExtensionPointer] 12: "Macintosh mouse button emulation" [XExtensionPointer] 13: "Logitech USB Optical Mouse" [XExtensionPointer] 6: "Wacom Intuos3 6x8 stylus" [XExtensionPointer] 14: "Wacom Intuos3 6x8 eraser" [XExtensionPointer] 15: "Wacom Intuos3 6x8 cursor" [XExtensionPointer] 16: "Wacom Intuos3 6x8 pad" [XExtensionPointer]