[SDL] adding wacom tablet support to sdl

[Danni Coy]

I have recently finished doing this for an app I am working on....
It is reasonably easy if not that straight forward...

There is a header file called SDL_syswm.h

This has functions necessary to access events from the underlying
windowing system.... Which means you have to use xlib to initiliase
the tablet and get the input...

http://www.bolthole.com/solaris/drivers/xopen.c
is the only example I can find in the wild.


There are several things you must then do

1) enable WM events that SDL does not understand code should look like this...

SDL_SysWMinfo info;
SDL_VERSION(&info.version);
if (( SDL_GetWMInfo(&info) == -1))
    {printf("could not get WM Info: %s.\n", SDL_GetError()); use_tablet = 0;}

SDL_EventState(SDL_SYSWMEVENT,SDL_ENABLE);

2) you can now receive wacom events via the SDL_SYSWMEVENT event

remember to use the lock and unlock functions while initialising the Tablet.

Hope that is enough to get you started feel free to ask further questions