function sets the mapping of the pointer.
If it succeeds, the X server generates a
Element map[i] defines the logical button number for the physical button
The length of the list must be the same as
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,
If any of the buttons to be altered are logically in the down state,
and the mapping is not changed.
can generate a
function returns the current mapping of the pointer.
Pointer buttons are numbered starting from one.
returns the number of physical buttons actually on the pointer.
The nominal mapping for a pointer is map[i]=i+1.
The nmap argument specifies the length of the array where the pointer
mapping is returned, and only the first nmap elements are returned
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 arguments type is accepted. Any argument defined as a set of
alternatives can generate this error.