XSETDEVICEBUTTONMAPP(3) |  | XSETDEVICEBUTTONMAPP(3)

# NAME

XSetDeviceButtonMapping, XGetDeviceButtonMapping - query or change device button mappings

# SYNOPSIS

    #include <X11/extensions/XInput.h>

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

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

    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 physical
    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. XGetDeviceButtonMapping 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
           XOpenInputDevice. 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
           XSetDeviceButtonMapping request was made specifying a
           device that has no buttons.

    BadValue
           Some numeric value falls outside the range of values
           accepted by the request. Unless a specific range is
           specified for an argument, the full range defined by the
           argument's type is accepted. Any argument defined as a
           set of alternatives can generate this error.

# SEE ALSO

    XChangeDeviceKeyboardControl(3), XChangeDeviceKeyMapping(3),
    XChangeDeviceModifierMapping(3)

09/15/2021 |