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CentOS 7.0 - man page for xkbsascreen (centos section 3)

XkbSAScreen(3)				  XKB FUNCTIONS 			   XkbSAScreen(3)

NAME
       XkbSAScreen - Returns the screenXXX field of act converted to a signed int

SYNOPSIS
       int XkbSAScreen (XkbSwitchScreenAction act);

ARGUMENTS
       - act  action from which to extract screen

DESCRIPTION
       Actions associated with the XkbSwitchScreen action structure change the active screen on a
       multiscreen display.

       The type field of the XkbSwitchScreenAction structure should always be XkbSA_SwitchScreen.

       The flags field is composed of the bitwise inclusive OR of the masks shown in Table 1.

		       Table 1 Switch Screen Action Flags
       -------------------------------------------------------------------
       Flag			 Meaning
       -------------------------------------------------------------------
       XkbSA_SwitchAbsolute	 If set, the screenXXX	field  represents
				 the  index of the new screen. Otherwise,
				 it represents an offset from the current
				 screen to the new screen.
       XkbSA_SwitchApplication	 If  not set, the action should switch to
				 another screen on the same server.  Oth-
				 erwise,  it  should  switch to another X
				 server or application	that  shares  the
				 same physical display.

       The  screenXXX  field  is  a signed character value that represents either the relative or
       absolute screen index, depending on the state of the XkbSA_SwitchAbsolute bit in the flags
       field. Xkb provides the following macros to convert between the integer and signed charac-
       ter value for screen numbers in XkbSwitchScreenAction structures.

       XkbSAScreen macro returns the screenXXX field of act converted to a signed int.

STRUCTURES
	   typedef struct _XkbSwitchScreenAction {
	       unsigned char	type;	     /* XkbSA_SwitchScreen */
	       unsigned char	flags;	     /* controls screen switching */
	       char		screenXXX;   /* screen number or delta */
	   } XkbSwitchScreenAction;

NOTES
       The XkbSwitchScreen action is optional. Servers are free to ignore the action  or  any  of
       its  flags  if  they  do  not support the requested behavior. If the action is ignored, it
       behaves like XkbSA_NoAction. Otherwise, key press and key release events do  not  generate
       an event.

X Version 11				   libX11 1.6.0 			   XkbSAScreen(3)


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