linux alt+tab

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

int main() {
    Display *display = XOpenDisplay(NULL);
    if (!display) {
        fprintf(stderr, "Cannot open display\n");
        return 1;
    }

    // Simulate Alt+Tab
    XEvent event;
    memset(&event, 0x00, sizeof(event));
    event.type = KeyPress;
    event.xkey.keycode = XKeysymToKeycode(display, XK_Tab);
    event.xkey.state = Mod1Mask; // Alt key

    XSendEvent(display, DefaultRootWindow(display), False, 0, &event);
    XFlush(display);

    // Simulate release of Alt+Tab
    memset(&event, 0x00, sizeof(event));
    event.type = KeyRelease;
    event.xkey.keycode = XKeysymToKeycode(display, XK_Tab);
    event.xkey.state = Mod1Mask; // Alt key

    XSendEvent(display, DefaultRootWindow(display), False, 0, &event);
    XFlush(display);

    XCloseDisplay(display);
    return 0;
}