XkbChangeMap man page on QNX

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XkbChangeMap(3)			 XKB FUNCTIONS		       XkbChangeMap(3)

       XkbChangeMap  -	Update	only partial components of a keyboard descrip‐
       tion, modify the appropriate fields in the server and map components of
       a local copy of the keyboard description

       Bool  XkbChangeMap  (Display  *dpy,  XkbDescPtr	xkb,  XkbMapChangesPtr

       - dpy  connection to X server

       - xkb  description from which new values are taken

       - changes
	      identifies component parts to update

       To update only partial components of a keyboard description, modify the
       appropriate  fields in the server and map components of a local copy of
       the keyboard description, then call XkbChangeMap with an XkbMapChanges‐
       Rec structure indicating which components have changed.

       XkbChangeMap  copies  any components specified by the changes structure
       from the keyboard description, xkb, to the X server specified by dpy.

       If any components specified by changes  are  not	 present  in  the  xkb
       parameter, XkbChangeMap returns False. Otherwise, it sends a request to
       the server and returns True.

       XkbChangeMap can generate BadAlloc, BadLength,  and  BadValue  protocol

       True	      The XkbChangeMap function returns True if the components
		      specified by changes are present in the xkb parameter.

       False	      The XkbChangeMap function returns False  if  the	compo‐
		      nents  specified	by  changes are not present in the xkb

       Use the XkbMapChangesRec structure to identify and track partial	 modi‐
       fications to the mapping components and to reduce the amount of traffic
       between the server and clients.

       typedef struct _XkbMapChanges {
	   unsigned short   changed;		/∗ identifies valid components in
       structure */
	   KeyCode	    min_key_code;	/∗ lowest numbered keycode for device
	   KeyCode	    max_key_code;	/∗ highest numbered keycode for device
	   unsigned char    first_type;		/∗ index of first key type modified */
	   unsigned char    num_types;		/∗ # types modified */
	   KeyCode	    first_key_sym;	/∗ first key whose key_sym_map changed
	   unsigned char    num_key_syms;	/∗ # key_sym_map entries changed */
	   KeyCode	    first_key_act;	/∗ first key whose key_acts entry
       changed */
	   unsigned char    num_key_acts;	/∗ # key_acts entries changed */
	   KeyCode	    first_key_behavior; /∗ first key whose behaviors changed */
	   unsigned char    num_key_behaviors;	/∗ # behaviors entries changed */
	   KeyCode	    first_key_explicit; /∗ first key whose explicit entry
       changed */
	   unsigned char    num_key_explicit;	/∗ # explicit entries changed */
	   KeyCode	    first_modmap_key;	/∗ first key whose modmap entry changed
	   unsigned char    num_modmap_keys;	/∗ # modmap entries changed */
	   KeyCode	    first_vmodmap_key;	/∗ first key whose vmodmap changed */
	   unsigned char    num_vmodmap_keys;	/∗ # vmodmap entries changed */
	   unsigned char    pad1;		/∗ reserved */
	   unsigned short   vmods;		/∗ mask indicating which vmods changed
       } XkbMapChangesRec,*XkbMapChangesPtr;

       BadAlloc	      Unable to allocate storage

       BadLength      The length of a request is shorter or longer  than  that
		      required to minimally contain the arguments

       BadValue	      An argument is out of range

X Version 11			 libX11 1.3.5		       XkbChangeMap(3)
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