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


 Name

    XGraphicsExposeEvent - GraphicsExpose and NoExpose event structures

 Structures

    The structures for GraphicsExpose and NoExpose events contain:

    typedef struct {
        int type;              /* GraphicsExpose */
        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 */
        Drawable drawable;
        int x, y;
        int width, height;
        int count;             /* if nonzero, at least this many more */
        int major_code;        /* core is CopyArea or CopyPlane */
        int minor_code;        /* not defined in the core */
    } XGraphicsExposeEvent;


    typedef struct {
        int type;              /* NoExpose */
        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 */
        Drawable drawable;
        int major_code;        /* core is CopyArea or CopyPlane */
        int minor_code;        /* not defined in the core */
    } XNoExposeEvent;


    When you receive these events, their structure members are set as fol-
    lows.

    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.

    Both structures have these common members: drawable, majorcode, and
    minorcode.  The drawable member is set to the drawable of the destina-
    tion region on which the graphics request was to be performed.  The
    majorcode member is set to the graphics request initiated by the client
    and can be either XCopyArea or XCopyPlane.  If it is XCopyArea, a call
    to XCopyArea initiated the request.  If it is XCopyPlane, a call to
    XCopyPlane initiated the request.  These constants are defined in
    <X11/Xproto.h>.  The minorcode member, like the majorcode member, indi-
    cates which graphics request was initiated by the client.  However, the
    minorcode member is not defined by the core X protocol and will be zero
    in these cases, although it may be used by an extension.

    The XGraphicsExposeEvent structure has these additional members: x, y,
    width, height, and count.  The x and y members are set to the coordinates
    relative to the drawable's origin and indicate the upper-left corner of
    the rectangle.  The width and height members are set to the size (extent)
    of the rectangle.  The count member is set to the number of GraphicsEx-
    pose events to follow.  If count is zero, no more GraphicsExpose events
    follow for this window.  However, if count is nonzero, at least that num-
    ber of GraphicsExpose events (and possibly more) are to follow for this
    window.

 See also

    XAnyEvent(XS), XButtonEvent(XS), XCreateWindowEvent(XS),
    XCirculateEvent(XS), XCirculateRequestEvent(XS), XColormapEvent(XS),
    XConfigureEvent(XS), XConfigureRequestEvent(XS), XCopyArea(XS),
    XCrossingEvent(XS), XDestroyWindowEvent(XS), XErrorEvent(XS),
    XExposeEvent(XS), XFocusChangeEvent(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