如何在Linux中侦听鼠标事件? [英] How to listen for mouse events in Linux?

问题描述

我想编写一个程序，该程序将在后台运行，并在发生鼠标单击时记录指针的位置.我试图在Google中搜索它，但结果是针对NCurses和一些GUI库的.有什么办法可以编写一个在后台侦听鼠标事件的程序?首选C和/或Python方式.

I want to write a program that would run in the background and log pointer's position when a mouse click occured. I tried to search for it in Google, but results were for NCurses and some GUI libraries. Is there any way that I could write a program that listens to mouse events in the background? C and/or Python ways are prefered.

推荐答案

以下是记录鼠标位置，点击和释放的示例:

Here is an example for logging mouse position, clicks and releases:

#include <stdio.h>
#include <X11/Xlib.h>

char *key_name[] = {
    "first",
    "second (or middle)",
    "third",
    "fourth",  // :D
    "fivth"    // :|
};

int main(int argc, char **argv)
{
    Display *display;
    XEvent xevent;
    Window window;

    if( (display = XOpenDisplay(NULL)) == NULL )
        return -1;


    window = DefaultRootWindow(display);
    XAllowEvents(display, AsyncBoth, CurrentTime);

    XGrabPointer(display, 
                 window,
                 1, 
                 PointerMotionMask | ButtonPressMask | ButtonReleaseMask , 
                 GrabModeAsync,
                 GrabModeAsync, 
                 None,
                 None,
                 CurrentTime);

    while(1) {
        XNextEvent(display, &xevent);

        switch (xevent.type) {
            case MotionNotify:
                printf("Mouse move      : [%d, %d]\n", xevent.xmotion.x_root, xevent.xmotion.y_root);
                break;
            case ButtonPress:
                printf("Button pressed  : %s\n", key_name[xevent.xbutton.button - 1]);
                break;
            case ButtonRelease:
                printf("Button released : %s\n", key_name[xevent.xbutton.button - 1]);
                break;
        }
    }

    return 0;
}

使用以下命令进行编译:

Compile it using:

$ gcc -lX11 mouse.c -o mouse
$ ./mouse 
Mouse move      : [664, 395]
Mouse move      : [665, 393]
Mouse move      : [666, 393]
Mouse move      : [666, 392]
Mouse move      : [664, 392]
Mouse move      : [664, 393]
Mouse move      : [664, 395]
Button pressed  : first
Button released : first
Button pressed  : third
Button released : third
^C
$

也在此处键盘和指针事件，并且 Xlib手册中有很多信息.

Look also here Keyboard and Pointer Events and there are a lot of information in The Xlib Manual.

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