XClientMessageEvent(XS)  X Version 11 (Release 5)    XClientMessageEvent(XS)
                                6 January 1993


 Name

    XClientMessageEvent - ColormapNotify event structure

 Structures

    The structure for ClientMessage events contains:

    typedef struct {
        int type;             /* ClientMessage */
        unsigned long serial; /* # of last request processed by server */
        Bool send_event;      /* true if this came from a SendEvent request */
        Display *display;     /* Display the event was read from */
        Window window;
        Atom message_type;
        int format;
        union {
                char b[20];
                short s[10];
                long l[5];
                } data;
    } XClientMessageEvent;


    When you receive this event, the structure members are set as follows.

    The type member is set to the event type constant name that uniquely
    identifies it.  For example, when the X server reports a GraphicsExpose
    event to a client application, it sends an XGraphicsExposeEvent structure
    with the type member set to GraphicsExpose.  The display member is set to
    a pointer to the display the event was read on.  The sendevent member is
    set to True if the event came from a SendEvent protocol request.  The
    serial member is set from the serial number reported in the protocol but
    expanded from the 16-bit least-significant bits to a full 32-bit value.
    The window member is set to the window that is most useful to toolkit
    dispatchers.

    The messagetype member is set to an atom that indicates how the data
    should be interpreted by the receiving client.  The format member is set
    to 8, 16, or 32 and specifies whether the data should be viewed as a list
    of bytes, shorts, or longs.  The data member is a union that contains the
    members b, s, and l.  The b, s, and l members represent data of 20 8-bit
    values, 10 16-bit values, and 5 32-bit values.  Particular message types
    might not make use of all these values.  The X server places no interpre-
    tation on the values in the window, messagetype, or data members.

 See also

    XAnyEvent(XS), XButtonEvent(XS), XCreateWindowEvent(XS),
    XCirculateEvent(XS), XCirculateRequestEvent(XS), XColormapEvent(XS),
    XConfigureEvent(XS), XConfigureRequestEvent(XS), XCrossingEvent(XS), XDe-
    stroyWindowEvent(XS), XErrorEvent(XS), XExposeEvent(XS),
    XFocusChangeEvent(XS), XGraphicsExposeEvent(XS), XGravityEvent(XS),
    XKeymapEvent(XS), XMapEvent(XS), XMapRequestEvent(XS),
    XPropertyEvent(XS), XReparentEvent(XS), XResizeRequestEvent(XS),
    XSelectionClearEvent(XS), XSelectionEvent(XS),
    XSelectionRequestEvent(XS), XUnmapEvent(XS), XVisibilityEvent(XS)
    Xlib - C Language X Interface