Events后续 ButtonPress 和 ButtonRelease(4)

这是上一篇文章Events(3)的补充说明

XButtonEvent 代码结构

typedef struct {
    int type;        /* of event */
    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;            /* "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 x, y coordinates in event window */
    int x_root, y_root;    /* coordinates relative to root */
    unsigned int state;    /* key or button mask */
    unsigned int button;    /* detail */
    Bool same_screen;    /* same screen flag */
} XButtonEvent;
typedef XButtonEvent XButtonPressedEvent;
typedef XButtonEvent XButtonReleasedEvent;

样例代码

// ======代码1=============
void buttonpress(XEvent *e)
{
    XButtonEvent *ev = &e->xbutton;
    printf("button press event, button: %d, x y = %d %d\n", ev->button, ev->x, ev->y);
    return;
}

void buttonrelease(XEvent *e)
{
    XButtonEvent *ev = &e->xbutton;
    printf("button release event, button: %d, x y = %d %d\n", ev->button, ev->x, ev->y);
}
// =======================


// ======代码2=============
wa.event_mask = ButtonPressMask | ButtonReleaseMask;
// =======================


// ======代码3=============
handlers[ButtonPress] = buttonpress;     // 4
handlers[ButtonRelease] = buttonrelease; // 5
// =======================

在我电脑上:

• 鼠标左键为1
• 鼠标中键辊轮为2
• 鼠标右键为3
• 鼠标中键滚轮向前滑动是4
• 鼠标中键滚轮向后滑动是5

效果