[Bug 11838] Y axis inverted in tablet with OpenCanvas 1.1?

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=11838





--- Comment #1 from Dan Kegel <dank at kegel.com>  2008-03-05 17:52:06 ---
User also reports a crash:

First chance exception: divide by zero in 32-bit code (0x7e3e957f).
Backtrace:
=>1 0x7e3e957f figure_deg+0x5f(x=0x0, y=0x14) [winex11.drv/wintab.c:749]
  2 0x7e3e9b5b motion_event+0xcb(hwnd=0x300a0, event=0x34fc04)
[winex11.drv/wintab.c:852]
  3 0x7e3c691c process_events+0x1ec(display=0x73bb83d0, mask=0x4ff)
[winex11.drv/event.c:269]
  4 0x7e3c6b37 X11DRV_MsgWaitForMultipleObjectsEx+0x107(count=0x1,
handles=0x34fcd4, timeout=0xffffffff, mask=0x4ff, flags=<?>)
[winex11.drv/event.c:303]
  5 0x7ebe9c9c MsgWaitForMultipleObjectsEx+0xec(count=<?>, pHandles=0x0,
timeout=0xffffffff, mask=0x4ff, flags=0x0) [user32/message.c:3225]
  6 0x7ebe9d4e WaitMessage+0x3e() [user32/message.c:3192]
...
0x7e3e957f figure_deg+0x5f [winex11.drv/wintab.c:749] in winex11: fstpl   
0x0(%esp)
749            rc = (int) 10 * (atan( (FLOAT)abs(y) / (FLOAT)abs(x)) / (3.1415
/ 180));

I'll attach a patch that switches to atan2, don't know if it helps yet.


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