147 lines
4.9 KiB
Plaintext
147 lines
4.9 KiB
Plaintext
XGETDEVICEKEYMAPPING(libmansuffix)
|
|
==================================
|
|
|
|
NAME
|
|
----
|
|
|
|
XGetDeviceKeyMapping, XChangeDeviceKeyMapping - query or change
|
|
device key mappings
|
|
|
|
SYNOPSIS
|
|
--------
|
|
|
|
#include <X11/extensions/XInput.h>
|
|
|
|
KeySym *XGetDeviceKeyMapping( Display *display,
|
|
XDevice *device,
|
|
KeyCode first_keycode,
|
|
int keycode_count,
|
|
int *keysyms_per_keycode_return);
|
|
display
|
|
Specifies the connection to the X server.
|
|
|
|
device
|
|
Specifies the device whose key mapping is to be queried
|
|
or modified.
|
|
|
|
first_keycode
|
|
Specifies the first KeyCode to be returned.
|
|
|
|
keycode_count
|
|
Specifies the number of KeyCodes to be returned or
|
|
modified.
|
|
|
|
keysyms_per_keycode
|
|
Specifies the number of KeySyms per KeyCode.
|
|
|
|
keysyms_per_keycode_return
|
|
Specifies the address of a variable into which the
|
|
number of KeySyms per KeyCodewill be returned.
|
|
|
|
keysyms
|
|
Specifies the address of an array of KeySyms.
|
|
|
|
DESCRIPTION
|
|
-----------
|
|
|
|
For the specified device, the XGetDeviceKeyMapping request
|
|
returns the symbols for the specified number of KeyCodes
|
|
starting with first_keycode. The value specified in
|
|
first_keycode must be greater than or equal to min_keycode as
|
|
returned by XListInputDevices, or a BadValue error results. In
|
|
addition, the following expression must be less than or equal
|
|
to max_keycode as returned by XListInputDevices:
|
|
|
|
first_keycode + keycode_count - 1
|
|
|
|
If this is not the case, a BadValue error results. The number
|
|
of elements in the KeySyms list is:
|
|
|
|
keycode_count * keysyms_per_keycode_return
|
|
|
|
KeySym number N, counting from zero, for KeyCode K has the
|
|
following index in the list, counting from zero: (K -
|
|
first_code) * keysyms_per_code_return + N
|
|
|
|
The X server arbitrarily chooses the keysyms_per_keycode_return
|
|
value to be large enough to report all requested symbols. A
|
|
special KeySym value of NoSymbol is used to fill in unused
|
|
elements for individual KeyCodes. To free the storage returned
|
|
by XGetDeviceKeyMapping, use XFree.
|
|
|
|
If the specified device does not support input class keys, a
|
|
BadMatch error will result.
|
|
|
|
XGetDeviceKeyMapping can generate a BadDevice, BadMatch, or
|
|
BadValue error.
|
|
|
|
For the specified device, the XChangeDeviceKeyMapping request
|
|
defines the symbols for the specified number of KeyCodes
|
|
starting with first_keycode. The symbols for KeyCodes outside
|
|
this range remain unchanged. The number of elements in keysyms
|
|
must be:
|
|
|
|
num_codes * keysyms_per_keycode
|
|
|
|
The specified first_keycode must be greater than or equal to
|
|
min_keycode returned by XListInputDevices, or a BadValue error
|
|
results. In addition, the following expression must be less
|
|
than or equal to max_keycode as returned by XListInputDevices,
|
|
or a BadValue error results:
|
|
|
|
first_keycode + num_codes - 1
|
|
|
|
KeySym number N, counting from zero, for KeyCode K has the
|
|
following index in keysyms, counting from zero:
|
|
|
|
(K - first_keycode) * keysyms_per_keycode + N
|
|
|
|
The specified keysyms_per_keycode can be chosen arbitrarily by
|
|
the client to be large enough to hold all desired symbols. A
|
|
special KeySym value of NoSymbol should be used to fill in
|
|
unused elements for individual KeyCodes. It is legal for
|
|
NoSymbol to appear in nontrailing positions of the effective
|
|
list for a KeyCode.XChangeDeviceKeyMapping generates a
|
|
DeviceMappingNotify event that is sent to all clients that have
|
|
selected that type of event.
|
|
|
|
There is no requirement that the X server interpret this
|
|
mapping. It is merely stored for reading and writing by
|
|
clients.
|
|
|
|
If the specified device does not support input class keys, a
|
|
BadMatch error results.
|
|
|
|
XChangeDeviceKeyMapping can generate a BadDevice, BadMatch,
|
|
BadAlloc, or BadValue error.
|
|
|
|
DIAGNOSTICS
|
|
-----------
|
|
|
|
BadDevice
|
|
An invalid device was specified. The specified device
|
|
does not exist or has not been opened by this client via
|
|
XOpenInputDevice. This error may also occur if the
|
|
specified device is the X keyboard or X pointer device.
|
|
|
|
BadMatch
|
|
This error may occur if an XGetDeviceKeyMapping or
|
|
XChangeDeviceKeyMapping request was made specifying a
|
|
device that has no keys.
|
|
|
|
BadValue
|
|
Some numeric value falls outside the range of values
|
|
accepted by the request. Unless a specific range is
|
|
specified for an argument, the full range defined by the
|
|
argument's type is accepted. Any argument defined as a
|
|
set of alternatives can generate this error.
|
|
|
|
BadAlloc
|
|
The server failed to allocate the requested resource or
|
|
server memory.
|
|
|
|
SEE ALSO
|
|
--------
|
|
|
|
XSetDeviceButtonMapping(libmansuffix), XSetDeviceModifierMapping(__libmansuffix_)
|