XLIB Programming Manual, Rel. 5, Third Edition

Name

GraphicsExpose,NoExpose — xnoexpose

When Generated

GraphicsExpose events indicate that the source area for a XCopyArea() or XCopyPlane() request was not available because it was outside the source window or obscured by a window. NoExpose events indicate that the source region was completely available.

Select With

These events are not selected with XSelectInput but are sent if the GC in the XCopyArea or XCopyPlane request had its graphics_exposures flag set to True. If graphics_exposures is True in the GC used for the copy, either one NoExpose event or one or more GraphicsExpose events will be generated for every XCopyArea or XCopyPlane call made.

XEvent Structure Name

typedef union _XEvent {
    ...
    XNoExposeEvent xnoexpose;
    XGraphicsExposeEvent xgraphicsexpose;
    ...
} XEvent;

Event Structure

typedef struct { int type; unsigned long serial; /* # of last request processed by server */ Bool send_event; /* True if this came from 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 X_CopyArea or X_CopyPlane */ int minor_code; /* not defined in the core */ } XGraphicsExposeEvent; typedef struct { int type; unsigned long serial; /* # of last request processed by server */ Bool send_event; /* True if this came from SendEvent request */ Display *display; /* Display the event was read from */ Drawable drawable; int major_code; /* core is X_CopyArea ...