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XGraphicsExposeEvent(3)         XLIB FUNCTIONS         XGraphicsExposeEvent(3)




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  */  }  XGraphicsEx-
       poseEvent;

       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 struc-
       ture 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 destina-
       tion 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_Copy-
       Area, 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  exten-
       sion.

       The  XGraphicsExposeEvent structure has these additional members: x, y,
       width, height, and count.  The x and y members are set to  the  coordi-
       nates  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 Graphic-
       sExpose  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),   XCircula-
       teEvent(3),  XCirculateRequestEvent(3),   XColormapEvent(3),   XConfig-
       ureEvent(3),          XConfigureRequestEvent(3),          XCopyArea(3),
       XCrossingEvent(3),   XDestroyWindowEvent(3),    XErrorEvent(3),    XEx-
       poseEvent(3),  XFocusChangeEvent(3), XGravityEvent(3), XKeymapEvent(3),
       XMapEvent(3),    XMapRequestEvent(3),    XPropertyEvent(3),     XRepar-
       entEvent(3),  XResizeRequestEvent(3),  XSelectionClearEvent(3), XSelec-
       tionEvent(3),  XSelectionRequestEvent(3),  XUnmapEvent(3),   XVisibili-
       tyEvent(3)
       Xlib - C Language X Interface



X Version 11                     libX11 1.7.1          XGraphicsExposeEvent(3)

xorg-libX11 1.7.1 - Generated Thu May 20 18:49:00 CDT 2021
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