xcbglxreadpixels(3) XCB Requests xcbglxreadpixels(3)

NAME
       xcbglxreadpixels -

SYNOPSIS
       #include 

   Request function
       xcbglxreadpixelscookiet
              xcbglxreadpixels(xcbconnectiont *conn,
              xcbglxcontexttagt contexttag, int32t x, int32t y,
              int32t width, int32t height, uint32t format, uint32t type,
              uint8t swapbytes, uint8t lsbfirst);

   Reply datastructure
       typedef struct xcbglxreadpixelsreplyt {
           uint8t  responsetype;
           uint8t  pad0;
           uint16t sequence;
           uint32t length;
           uint8t  pad1[24];
       } xcbglxreadpixelsreplyt;

   Reply function
       xcbglxreadpixelsreplyt
              *xcbglxreadpixelsreply(xcbconnectiont *conn,
              xcbglxreadpixelscookiet cookie, xcbgenericerrort **e);

   Reply accessors
       uint8t *xcbglxreadpixelsdata(const xcbglxreadpixelsrequestt
              *reply);

       int xcbglxreadpixelsdatalength(const xcbglxreadpixelsreplyt
              *reply);

       xcbgenericiteratort xcbglxreadpixelsdataend(const
              xcbglxreadpixelsreplyt *reply);

REQUEST ARGUMENTS
       conn      The XCB connection to X11.

       contexttag
                 TODO: NOT YET DOCUMENTED.

       x         TODO: NOT YET DOCUMENTED.

       y         TODO: NOT YET DOCUMENTED.

       width     TODO: NOT YET DOCUMENTED.

       height    TODO: NOT YET DOCUMENTED.

       format    TODO: NOT YET DOCUMENTED.

       type      TODO: NOT YET DOCUMENTED.

       swapbytes
                 TODO: NOT YET DOCUMENTED.

       lsbfirst TODO: NOT YET DOCUMENTED.

REPLY FIELDS
       responsetype
                 The type of this reply, in this case XCBGLXREADPIXELS.
                 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).

DESCRIPTION
RETURN VALUE
       Returns an xcbglxreadpixelscookiet. Errors have to be handled when
       calling the reply function xcbglxreadpixelsreply.

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

ERRORS
       This request does never generate any errors.

SEE ALSO
AUTHOR
       Generated from glx.xml. Contact xcb@lists.freedesktop.org for correc‐
       tions and improvements.



X Version 11                      libxcb 1.13           xcbglxreadpixels(3)