XGraphicsExposeEvent(3X11)XLIB FUNCTIONXGraphicsExposeEvent(3X11)
XGraphicsExposeEvent, XNoExposeEvent - GraphicsExpose and
NoExpose event structures
The structures for GraphicsExpose and NoExpose events con-
tain:
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
XFree86 Version 4.5.0 1
XGraphicsExposeEvent(3X11)XLIB FUNCTIONXGraphicsExposeEvent(3X11)
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 Gra-
phicsExpose events to follow. If count is zero, no more Gra-
phicsExpose 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.
XAnyEvent(3X11), XButtonEvent(3X11),
XCreateWindowEvent(3X11), XCirculateEvent(3X11),
XCirculateRequestEvent(3X11), XColormapEvent(3X11),
XConfigureEvent(3X11), XConfigureRequestEvent(3X11),
XCopyArea(3X11), XCrossingEvent(3X11),
XDestroyWindowEvent(3X11), XErrorEvent(3X11),
XExposeEvent(3X11), XFocusChangeEvent(3X11),
XGravityEvent(3X11), XKeymapEvent(3X11), XMapEvent(3X11),
XMapRequestEvent(3X11), XPropertyEvent(3X11),
XReparentEvent(3X11), XResizeRequestEvent(3X11),
XSelectionClearEvent(3X11), XSelectionEvent(3X11),
XSelectionRequestEvent(3X11), XUnmapEvent(3X11),
XVisibilityEvent(3X11)
Xlib - C Language X Interface
XFree86 Version 4.5.0 2
Generated on 2012-02-20 02:47:02 by $MirOS: src/scripts/roff2htm,v 1.70 2011/12/03 18:21:12 tg Exp $
These manual pages and other documentation are copyrighted by their respective writers;
their source is available at our CVSweb,
AnonCVS, and other mirrors. The rest is Copyright © 2002‒2011 The MirOS Project, Germany.
This product includes material
provided by Thorsten Glaser.
This manual page’s HTML representation is supposed to be valid XHTML/1.1; if not, please send a bug report – diffs preferred.