static int x11_xinput2_init_internal(void)
{
const char *ext = "XInputExtension";
XIDeviceInfo *device_list = NULL;
int device_count = 0;
int available = 0;
int event = 0;
int error = 0;
int major = 2;
int minor = 0;
int i = 0;
xinput2_cleanup(); /* just in case... */
if (getenv("MANYMOUSE_NO_XINPUT2") != NULL)
return -1;
if (!find_api_symbols())
return -1; /* couldn't find all needed symbols. */
display = pXOpenDisplay(NULL);
if (display == NULL)
return -1; /* no X server at all */
Xext_handler = pXSetExtensionErrorHandler(xext_errhandler);
available = (pXQueryExtension(display, ext, &xi2_opcode, &event, &error) &&
(pXIQueryVersion(display, &major, &minor) != BadRequest));
pXSetExtensionErrorHandler(Xext_handler);
Xext_handler = NULL;
if (!available)
return -1; /* no XInput2 support. */
/*
* Register for events first, to prevent a race where we unplug a
* device between when we queried for the list and when we start
* listening for changes.
*/
if (!register_for_events(display))
return -1;
device_list = pXIQueryDevice(display, XIAllDevices, &device_count);
for (i = 0; i < device_count; i++)
{
MouseStruct *mouse = &mice[available_mice];
if (init_mouse(mouse, &device_list[i]))
available_mice++;
} /* for */
pXIFreeDeviceInfo(device_list);
return available_mice;
} /* x11_xinput2_init_internal */
static int x11_xinput_init_internal(void)
{
int i;
xinput_cleanup(); /* just in case... */
if (getenv("MANYMOUSE_NO_XINPUT") != NULL)
return(-1);
if (!find_api_symbols())
return(-1); /* couldn't find all needed symbols. */
display = pXOpenDisplay(NULL);
if (display == NULL)
return(-1); /* no X server at all */
/* Stop stderr output in case XInput extension is missing... */
Xext_handler = pXSetExtensionErrorHandler(xext_errhandler);
extver = pXGetExtensionVersion(display, INAME);
pXSetExtensionErrorHandler(Xext_handler);
Xext_handler = NULL;
if ((extver == NULL) || (extver == (XExtensionVersion *) NoSuchExtension))
return(-1); /* no such extension */
if (extver->present == XI_Absent)
return(-1); /* extension not available. */
device_list = pXListInputDevices(display, &device_count);
if (device_list == NULL)
return(-1);
for (i = 0; i < device_count; i++)
{
MouseStruct *mouse = &mice[available_mice];
if (init_mouse(mouse, &device_list[i]))
available_mice++;
} /* for */
return(available_mice);
} /* x11_xinput_init_internal */
