buttonrelease.c

#include <stdio.h>
#include <stddef.h>
#include <X11/Xlib.h>
#include <assert.h>
#include <unistd.h>
#include <signal.h>


int working = 1;

void signal_callback_handler(int signum) {
    working = 0;
}

int main () {
    signal(SIGINT, signal_callback_handler);
    signal(SIGTSTP, signal_callback_handler);
    signal(SIGTERM, signal_callback_handler);

    Display *d = XOpenDisplay(NULL);
    assert(d);

    XSelectInput(d,DefaultRootWindow(d), ButtonReleaseMask);

    while(working) {
        XEvent e;
        XNextEvent(d, &e);
    printf("Something Occured");
        if (e.type == ButtonRelease) {
            printf("%dx%d",e.xbutton.x,e.xbutton.y);
    fflush(stdout);
        }
    }


    return 0;
}