NAME

       XGraphicsExposeEvent, XNoExposeEvent - 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 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  send_event
       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,  major_code,  and  minor_code.   The
       drawable  member  is  set  to the drawable of the destination region on which the graphics
       request was to be performed.  The  major_code  member  is  set  to  the  graphics  request
       initiated by the client and can be either X_CopyArea or X_CopyPlane.  If it is X_CopyArea,
       a call to XCopyArea initiated the request.  If it is X_CopyPlane,  a  call  to  XCopyPlane
       initiated  the  request.   These  constants  are  defined in X11/Xproto.h.  The minor_code
       member, like the major_code member, indicates which graphics request was initiated by  the
       client.   However, the minor_code 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
       GraphicsExpose events to follow.  If count is zero, no more GraphicsExpose  events  follow
       for  this  window.   However,  if count is nonzero, at least that number of GraphicsExpose
       events (and possibly more) are to follow for this window.

SEE ALSO

       XAnyEvent(3),      XButtonEvent(3),       XCreateWindowEvent(3),       XCirculateEvent(3),
       XCirculateRequestEvent(3),              XColormapEvent(3),             XConfigureEvent(3),
       XConfigureRequestEvent(3),   XCopyArea(3),   XCrossingEvent(3),    XDestroyWindowEvent(3),
       XErrorEvent(3),  XExposeEvent(3), XFocusChangeEvent(3), XGravityEvent(3), XKeymapEvent(3),
       XMapEvent(3),       XMapRequestEvent(3),       XPropertyEvent(3),       XReparentEvent(3),
       XResizeRequestEvent(3),            XSelectionClearEvent(3),            XSelectionEvent(3),
       XSelectionRequestEvent(3), XUnmapEvent(3), XVisibilityEvent(3)
       Xlib - C Language X Interface