XLIB Programming Manual, Rel. 5, Third Edition

Name

MotionNotify — xmotion

When Generated

A MotionNotify event reports that the user moved the pointer or that a program warped the pointer to a new position within a single window.

Select With

This event is selected with ButtonMotionMask, Button1MotionMask, Button2MotionMask, Button3MotionMask, Button4MotionMask, Button5MotionMask, PointerMotionHintMask, and PointerMotionMask. These masks determine the specific conditions under which the event is generated.

See 8.3.3.3 The Pointer Motion Masks for a description of selecting button events.

XEvent Structure Name

typedef union _XEvent {
    ...
    XMotionEvent xmotion;
    ...
} XEvent;

Event Structure

typedef struct {
    int type;                /* of event */
    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 */
    Window window;           /* event window it is reported relative to */
    Window root;             /* root window that the event occurred on */
    Window subwindow;        /* child window */
    Time time;               /* milliseconds */
    int x, y;                /* pointer coordinates relative to receiving
                              * window */
    int x_root, y_root;      /* coordinates relative to root */
    unsigned int state;      /* button and modifier key mask */
    char is_hint;            /* is this a motion hint */
    Bool same_screen;        /* same screen flag */
} XMotionEvent;
typedef XMotionEvent XPointerMovedEvent;

Event Structure Members

subwindow

If the source window is the child of the receiving window, then the subwindow member is set to the ID ...