SYNTAX

       int XSetDeviceButtonMapping(Display *display, XDevice *device, unsigned
              char map[], int nmap);

       int XGetDeviceButtonMapping(Display *display, XDevice *device, unsigned
              char map_return[], int nmap);

ARGUMENTS

       display     Specifies the connection to the X server.

       device      Specifies the device whose button mapping is to be  queried
                   or changed.

       map         Specifies the mapping list.

       map_return  Returns the mapping list.

       nmap        Specifies the number of items in the mapping list.

DESCRIPTION

       The  XSetDeviceButtonMapping  request sets the mapping of the specified
       device.  If it succeeds, the X server generates  a  DeviceMappingNotify
       event,  and  XSetDeviceButtonMapping  returns  MappingSuccess.  Element
       map[i] defines the logical button number for the physical  button  i+1.
       The  length  of  the  list  must be the same as XGetDeviceButtonMapping
       would return, or a BadValue error results.  A zero element  disables  a
       button, and elements are not restricted in value by the number of phys-
       ical buttons.  However, no two  elements  can  have  the  same  nonzero
       value,  or  a  BadValue  error  results.   If  any of the buttons to be
       altered  are  logically  in  the  down  state,  XSetDeviceButtonMapping
       returns MappingBusy, and the mapping is not changed.

       XSetDeviceButtonMapping can generate BadDevice, BadMatch, and  BadValue
       errors.

       The XGetDeviceButtonMapping request returns the current mapping of  the
       specified device.  Buttons are numbered starting from one.  XGetDevice-
       ButtonMapping returns the number of physical buttons  actually  on  the
       device.   The  nominal  mapping  for  a device is map[i]=i+1.  The nmap
       argument specifies the length of the array where the device mapping  is
       returned,  and only the first nmap elements are returned in map_return.

       XGetDeviceButtonMapping can generate BadDevice or BadMatch errors.

DIAGNOSTICS

       BadDevice   An invalid device was specified.  The specified device does
                   not  exist or has not been opened by this client via XOpen-
                   InputDevice.  This error may also occur  if  the  specified
                   device is the X keyboard or X pointer device.

       BadMatch    This error may occur if an XGetDeviceButtonMapping or XSet-



X Version 11                      Release 6.6    XSetDeviceButtonMapping(3X11)