DOKK / manpages / debian 11 / libx11-doc / XkbGetKeyboard.3.en
XkbGetKeyboard(3) XKB FUNCTIONS XkbGetKeyboard(3)

XkbGetKeyboard - Retrieves one or more components of a keyboard device description

XkbDescPtr XkbGetKeyboard (Display *display, unsigned int which, unsigned int device_spec);

connection to the X server
device ID, or XkbUseCoreKbd
determines events to be selected / deselected
1=>select, 0->deselect; for events in bits_to_change

XkbGetKeyboard allocates and returns a pointer to a keyboard description. It queries the server for those components specified in the which parameter for device device_spec and copies the results to the XkbDescRec it allocated. The remaining fields in the keyboard description are set to NULL. The valid masks for which are those listed in Table 1.

Table 1 Mask Bits for XkbDescRec
Mask Bit XkbDescRec Field Value
XkbControlsMask ctrls (1L<<0)
XkbServerMapMask server (1L<<1)
XkbIClientMapMask map (1L<<2)
XkbIndicatorMapMask indicators (1L<<3)
XkbNamesMask names (1L<<4)
XkbCompatMapMask compat (1L<<5)
XkbGeometryMask geom (1L<<6)
XkbAllComponentsMask All Fields (1L<<7)

XkbGetKeyboard is used to read the current description for one or more components of a keyboard device. It calls XkbGetKeyboardByName as follows:

XkbGetKeyboardByName(dpy, device_spec, NULL, which, which, False).

BadAlloc
Unable to allocate storage

libX11 1.7.2 X Version 11