WindowManager test

gistfile1.cpp

extern "C" {
#include <X11/Xlib.h>
#include <X11/cursorfont.h>
#include <X11/extensions/Xinerama.h>
}

int main(void) {
  Display *display(XOpenDisplay(nullptr));
  if (!display) return 1;

  XSetWindowAttributes at = {
    .event_mask = SubstructureRedirectMask,
    .cursor = XCreateFontCursor(display, XC_left_ptr),
  };

  const int screen_count(ScreenCount(display));
  for (int i = 0; i < screen_count; ++i) {
    Window root_window(RootWindow(display, i));
    XChangeWindowAttributes(display, root_window, CWEventMask | CWCursor, &at);
  }

  while (true) {
    XEvent event;
    XNextEvent(display, &event);
    if (event.type == MapRequest) {
      XMapRequestEvent *map_request_event(&event.xmaprequest);
      XMapWindow(map_request_event->display, map_request_event->window);
      XSetInputFocus(map_request_event->display, map_request_event->window,
                     RevertToPointerRoot, CurrentTime);
    }
  }

  XCloseDisplay(display);
  return 0;
}