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XSetPointerMapping, XGetPointerMapping - manipulate pointer settings
int XSetPointerMapping(Display *display, unsigned char map, int nmap); int XGetPointerMapping(Display *display, unsigned char map_return, int nmap);
display Specifies the connection to the X server. map Specifies the mapping list. map_return Returns the mapping list. nmap Specifies the number of items in the mapping list.
The XSetPointerMapping function sets the mapping of the pointer. If it succeeds, the X server generates a MappingNotify event, and XSetPointerMapping 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 XGetPointerMapping 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, XSetPointerMapping returns MappingBusy, and the mapping is not changed. XSetPointerMapping can generate a BadValue error. The XGetPointerMapping function returns the current mapping of the pointer. Pointer buttons are numbered starting from one. XGetPointerMapping 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 in map_return.
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.
XChangeKeyboardControl(3), XChangeKeyboardMapping(3) Xlib - C Language X Interface