XkbSetServerInternalMods.man [plain text]
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.TH XkbSetServerInternalMods __libmansuffix__ __xorgversion__ "XKB FUNCTIONS"
.SH NAME
XkbSetServerInternalMods \- Sets the modifiers that are consumed by the server
before events are delivered to the client
.SH SYNOPSIS
.B Bool XkbSetServerInternalMods
(
.I display,
.I device_spec,
.I affect_real,
.I real_values,
.I affect_virtual,
.I virtual_values
)
.br
Display *\fIdisplay\fP\^;
.br
unsigned int \fIdevice_spec\fP\^;
.br
unsigned int \fIaffect_real\fP\^;
.br
unsigned int \fIreal_values\fP\^;
.br
unsigned int \fIaffect_virtual\fP\^;
.br
unsigned int \fIvirtual_values\fP\^;
.if n .ti +5n
.if t .ti +.5i
.SH ARGUMENTS
.TP
.I \- display
connection to the X server
.TP
.I \- device_spec
device ID, or XkbUseCoreKbd
.TP
.I \- affect_real
mask of real modifiers affected by this call
.TP
.I \- real_values
values for affected real modifiers (1=>set, 0=>unset)
.TP
.I \- affect_virtual
mask of virtual modifiers affected by this call
.TP
.I \- virtual_values
values for affected virtual modifiers (1=>set, 0=>unset)
.SH DESCRIPTION
.LP
The core protocol does not provide any means to prevent a modifier from being
reported in events sent to clients; Xkb, however makes this possible via the
InternalMods control. It specifies modifiers that should be consumed by the
server and not reported to clients. When a key is pressed and a modifier that
has its bit set in the InternalMods control is reported to the server, the
server uses the modifier when determining the actions to apply for the key. The
server then clears the bit, so it is not actually reported to the client. In
addition, modifiers specified in the InternalMods control are not used to
determine grabs and are not used to calculate core protocol compatibility state.
Manipulate the InternalMods control via the
.I internal
field in the XkbControlsRec structure, using
.I XkbSetControls
and
.I XkbGetControls.
Alternatively, use
.I XkbSetServerInternalMods.
.I XkbSetServerInternalMods
sends a request to the server to change the internal modifiers consumed by the
server.
.I affect_real
and
.I real_values
are masks of real modifier bits indicating which real modifiers are to be added
and removed from the server's internal modifiers control. Modifiers selected by
both
.I affect_real
and
.I real_values
are added to the server's internal modifiers control; those selected by
.I affect_real
but not by
.I real_values
are removed from the server's internal modifiers mask. Valid values for
.I affect_real
and
.I real_values
consist of any combination of the eight core modifier bits: ShiftMask, LockMask,
ControlMask, Mod1Mask - Mod5Mask.
.I affect_virtual
and
.I virtual_values
are masks of virtual modifier bits indicating which virtual modifiers are to be
added and removed from the server's internal modifiers control. Modifiers
selected by both
.I affect_virtual
and
.I virtual_values
are added to the server's internal modifiers control; those selected by
.I affect_virtual
but not by
.I virtual_values
are removed from the server's internal modifiers control. See below for a
discussion of virtual modifier masks to use in
.I affect_virtual
and
.I virtual_values. XkbSetServerInternalMods
does not wait for a reply from the server. It returns True if the request was
sent and False otherwise.
Virtual modifiers are named by converting their string name to an X Atom and
storing the Atom in the
.I names.vmods
array in an XkbDescRec structure. The position of a name Atom in the
.I names.vmods
array defines the bit position used to represent the virtual modifier and also
the index used when accessing virtual modifier information in arrays: the name
in the i-th (0 relative) entry of
.I names.vmods
is the i-th virtual modifier, represented by the mask (1<<i). Throughout Xkb,
various functions have a parameter that is a mask representing virtual modifier
choices. In each case, the i-th bit (0 relative) of the mask represents the i-th
virtual modifier.
To set the name of a virtual modifier, use
.I XkbSetNames,
using XkbVirtualModNamesMask in
.I which
and the name in the
.I xkb
argument; to retrieve indicator names, use
.I XkbGetNames.
.SH STRUCTURES
.LP
The complete description of an Xkb keyboard is given by an XkbDescRec. The
component structures in the XkbDescRec represent the major Xkb components
outlined in Figure 1.1.
.nf
typedef struct {
struct _XDisplay * display; /\(** connection to X server */
unsigned short flags; /\(** private to Xkb, do not modify */
unsigned short device_spec; /\(** device of interest */
KeyCode min_key_code; /\(** minimum keycode for device */
KeyCode max_key_code; /\(** maximum keycode for device */
XkbControlsPtr ctrls; /\(** controls */
XkbServerMapPtr server; /\(** server keymap */
XkbClientMapPtr map; /\(** client keymap */
XkbIndicatorPtr indicators; /\(** indicator map */
XkbNamesPtr names; /\(** names for all components */
XkbCompatMapPtr compat; /\(** compatibility map */
XkbGeometryPtr geom; /\(** physical geometry of keyboard */
} XkbDescRec, *XkbDescPtr;
.fi
The display field points to an X display structure. The flags field is private
to the library: modifying flags may yield unpredictable results. The device_spec
field specifies the device identifier of the keyboard input device, or
XkbUseCoreKeyboard, which specifies the core keyboard device. The min_key_code
and max_key_code fields specify the least and greatest keycode that can be
returned by the keyboard.
Each structure component has a corresponding mask bit that is used in function
calls to indicate that the structure should be manipulated in some manner, such
as allocating it or freeing it. These masks and their relationships to the
fields in the XkbDescRec are shown in Table 1.
.TS
c s s
l l l
l l l.
Table 1 Mask Bits for XkbDescRec
_
Mask Bit XkbDescRec Field Value
_
XkbControlsMask ctrls (1L<<0)
XkbServerMapMask server (1L<<1)
XkbIClientMapMask map (1L<<2)
XkbIndicatorMapMask indicators (1L<<3)
XkbNamesMask names (1L<<4)
XkbCompatMapMask compat (1L<<5)
XkbGeometryMask geom (1L<<6)
XkbAllComponentsMask All Fields (0x7f)
.SH "SEE ALSO"
.BR XkbGetControls (__libmansuffix__),
.BR XkbGetNames (__libmansuffix__),
.BR XkbSetControls (__libmansuffix__),
.BR XkbSetNames (__libmansuffix__)