Table of Contents
XSetDeviceButtonMapping, XGetDeviceButtonMapping - query
or change device button mappings
device, map, nmap)
unsigned char map;
int XGetDeviceButtonMapping(display, device, map_return, nmap)
unsigned char map_return;
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.
- Specifies the connection to the X server.
the device whose button mapping is to be queried or changed.
the mapping list.
- Returns the mapping list.
- Specifies the
number of items in the mapping list.
generate BadDevice, BadMatch, and BadValue errors.
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
XGetDeviceButtonMapping can generate BadDevice or BadMatch
- 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.
- This error may occur if an XGetDeviceButtonMapping
or XSetDeviceButtonMapping request was made specifying a device that
has no buttons.
- 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.
Programming With Xlib
Table of Contents