NAME¶
DMXGetInputAttributes - determine input device attributes
SYNOPSIS¶
#include <X11/extensions/dmxext.h>
Bool DMXGetInputAttributes(Display *dpy,
int id,
DMXInputAttributes *attr);
DESCRIPTION¶
DMXGetInputAttributes() returns information about the input device
specified with
id. This information cannot be obtained from the
XListInputDevices(3) call.
id is the same as that used by the
XListInputDevices(3) call, and must be in the range 0 to one less than
the value returned by
DMXGetInputCount(3), inclusive.
The
DMXInputAttributes structure is:
typedef struct {
DMXInputEnum inputType;
int physicalScreen;
int physicalId;
Bool isCore;
Bool sendsCore;
const char *name;
Bool detached;
} DMXInputAttributes;
The value of
inputType will always be valid, and will have one of the
following values, depending on the type of input:
DMXLocalInputType ,
DMXConsoleInputType , or DMXBackendInputType .
For local devices, all other fields returned, except
isCore and sendsCore
, are invalid.
For console devices,
physicalScreen and physicalID will be invalid, and
name will return the name of the X server on which the console window
is displayed.
For back-end devices,
physicalScreen will identify the back-end display
and can be used as an argument to
DMXGetScreenAttributes(3) to obtain
more information;
physicalId will be the XInput device id on the
back-end X server; and
name will be invalid (since it does not provide
any additional information that cannot be obtained with
DMXGetScreenAttributes(3)).
If
isCore is
True, then this device is active as a true core input
device and will send core events. If
sendsCore is True, then this
device is an XInput extension device, but sends core events
instead of
extension events. This behavior is different from that of XFree86 or Xorg,
where XInput extension devices may send
both extension events and core
events.
If
detached is True, then this device has been detached and is no longer
producing input events. The device may be reattached using
DMXAddInput(3).
RETURN VALUE¶
DMXGetInputAttributes() returns
True unless there is a protocol
error.
DMXGetInputAttributes() can generate
BadValue (if the value of
id is out of range).
SEE ALSO¶
DMXGetInputCount(3),
XListInputDevices(3),
DMXGetScreenAttributes(3),
DMXAddInput(3),
DMX(3),
Xdmx(1)