XExposeEvent(3) XLIB FUNCTIONS XExposeEvent(3)
NAME
XExposeEvent - Expose event structure
STRUCTURES
The structure for
Expose events contains:
typedef struct {
int type; /* Expose */
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;
int x, y;
int width, height;
int count; /* if nonzero, at least this many more */
} XExposeEvent;
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 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.
The window member is set to the exposed (damaged) window. The x and
y members are set to the coordinates relative to the window'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
Expose events that are to
follow. If count is zero, no more
Expose events follow for this
window. However, if count is nonzero, at least that number of
Expose events (and possibly more) follow for this window. Simple
applications that do not want to optimize redisplay by distinguishing
between subareas of its window can just ignore all
Expose events with
nonzero counts and perform full redisplays on events with zero
counts.
SEE ALSO
XAnyEvent(3),
XButtonEvent(3),
XCreateWindowEvent(3),
XCirculateEvent(3),
XCirculateRequestEvent(3),
XColormapEvent(3),
XConfigureEvent(3),
XConfigureRequestEvent(3),
XCrossingEvent(3),
XDestroyWindowEvent(3),
XErrorEvent(3),
XFocusChangeEvent(3),
XGraphicsExposeEvent(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 InterfaceX Version 11 libX11 1.8.10 XExposeEvent(3)
