xcbquerypointer(3) XCB Requests xcbquerypointer(3)

NAME
       xcbquerypointer - get pointer coordinates

SYNOPSIS
       #include 

   Request function
       xcbquerypointercookiet xcbquerypointer(xcbconnectiont *conn,
              xcbwindowt window);

   Reply datastructure
       typedef struct xcbquerypointerreplyt {
           uint8t      responsetype;
           uint8t      samescreen;
           uint16t     sequence;
           uint32t     length;
           xcbwindowt root;
           xcbwindowt child;
           int16t      rootx;
           int16t      rooty;
           int16t      winx;
           int16t      winy;
           uint16t     mask;
           uint8t      pad0[2];
       } xcbquerypointerreplyt;

   Reply function
       xcbquerypointerreplyt
              *xcbquerypointerreply(xcbconnectiont *conn,
              xcbquerypointercookiet cookie, xcbgenericerrort **e);

REQUEST ARGUMENTS
       conn      The XCB connection to X11.

       window    A window to check if the pointer is on the same screen as
                 window (see the samescreen field in the reply).

REPLY FIELDS
       responsetype
                 The type of this reply, in this case XCBQUERYPOINTER. This
                 field is also present in the xcbgenericreplyt and can be
                 used to tell replies apart from each other.

       sequence  The sequence number of the last request processed by the X11
                 server.

       length    The length of the reply, in words (a word is 4 bytes).

       samescreen
                 If samescreen is False, then the pointer is not on the same
                 screen as the argument window, child is None, and winx and
                 winy are zero. If samescreen is True, then winx and winy
                 are the pointer coordinates relative to the argument window's
                 origin, and child is the child containing the pointer, if
                 any.

       root      The root window the pointer is logically on.

       child     The child window containing the pointer, if any, if
                 samescreen is true. If samescreen is false, XCBNONE is re‐
                 turned.

       rootx    The pointer X position, relative to root.

       rooty    The pointer Y position, relative to root.

       winx     The pointer X coordinate, relative to child, if samescreen
                 is true. Zero otherwise.

       winy     The pointer Y coordinate, relative to child, if samescreen
                 is true. Zero otherwise.

       mask      The current logical state of the modifier keys and the but‐
                 tons. Note that the logical state of a device (as seen by
                 means of the protocol) may lag the physical state if device
                 event processing is frozen.

DESCRIPTION
       Gets the root window the pointer is logically on and the pointer coor‐
       dinates relative to the root window's origin.

RETURN VALUE
       Returns an xcbquerypointercookiet. Errors have to be handled when
       calling the reply function xcbquerypointerreply.

       If you want to handle errors in the event loop instead, use
       xcbquerypointerunchecked. See xcb-requests(3) for details.

ERRORS
       xcbwindowerrort
                 The specified window does not exist.

SEE ALSO
       xcb-requests(3)

AUTHOR
       Generated from xproto.xml. Contact xcb@lists.freedesktop.org for cor‐
       rections and improvements.



X Version 11                      libxcb 1.13             xcbquerypointer(3)