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XkbSetServerInternalMods(3)	 XKB FUNCTIONS	   XkbSetServerInternalMods(3)

       XkbSetServerInternalMods	 - Sets	the modifiers that are consumed	by the
       server before events are	delivered to the client

       Bool  XkbSetServerInternalMods  (Display	 *display,  unsigned  int  de-
	      vice_spec,  unsigned  int	affect_real, unsigned int real_values,
	      unsigned int affect_virtual, unsigned int	virtual_values);

       - display
	      connection to the	X server

       - device_spec
	      device ID, or XkbUseCoreKbd

       - affect_real
	      mask of real modifiers affected by this call

       - real_values
	      values for affected real modifiers (1=>set, 0=>unset)

       - affect_virtual
	      mask of virtual modifiers	affected by this call

       - virtual_values
	      values for affected virtual modifiers (1=>set, 0=>unset)

       The core	protocol does not provide any means to prevent a modifier from
       being  reported in events sent to clients; Xkb, however makes this pos-
       sible 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 determin-
       ing 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 internal field in the Xkb-
       ControlsRec structure, using XkbSetControls and XkbGetControls.	Alter-
       natively, use XkbSetServerInternalMods.

       XkbSetServerInternalMods	 sends	a  request to the server to change the
       internal	modifiers consumed by the server.  affect_real and 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. Mod-
       ifiers  selected	 by  both affect_real and real_values are added	to the
       server's	internal modifiers control; those selected by affect_real  but
       not  by	real_values  are  removed from the server's internal modifiers
       mask. Valid values for affect_real and real_values consist of any  com-
       bination	of the eight core modifier bits: ShiftMask, LockMask, Control-
       Mask, Mod1Mask -	Mod5Mask.  affect_virtual and 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.	 Modi-
       fiers  selected	by both	affect_virtual and virtual_values are added to
       the server's internal modifiers control;	those selected by  affect_vir-
       tual  but  not by virtual_values	are removed from the server's internal
       modifiers control. See below for	a discussion of	virtual	modifier masks
       to  use	in affect_virtual and virtual_values. XkbSetServerInternalMods
       does not	wait for a reply from the server. It returns True if  the  re-
       quest was sent and False	otherwise.

       Virtual	modifiers  are	named  by converting their string name to an X
       Atom and	storing	the Atom in the	names.vmods  array  in	an  XkbDescRec
       structure. The position of a name Atom in the 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 names.vmods is the i-th  virtual
       modifier, represented by	the mask (1<<i). Throughout Xkb, various func-
       tions 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 XkbSetNames,	using  XkbVir-
       tualModNamesMask	in which and the name in the xkb argument; to retrieve
       indicator names,	use XkbGetNames.

       The complete description	of an Xkb keyboard is given by an  XkbDescRec.
       The component structures	in the XkbDescRec represent the	major Xkb com-
       ponents outlined	in Figure 1.1.

       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;

       The display field points	to an X	display	structure. The flags field  is
       private	to  the	 library:  modifying flags may yield unpredictable re-
       sults. 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.

	       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)

       XkbGetControls(3), XkbGetNames(3), XkbSetControls(3), XkbSetNames(3)

X Version 11			 libX11	1.6.12	   XkbSetServerInternalMods(3)


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