I'm wriitng an app in c that will be using Xlib, GTK. I want to create a hotkey that should interrupt the application from it's activity and putting it into a dormant state.
I have done some reading and I believe I cannot use: XGrabKey because a window manager is running and is already doing that
is there any other way from gtk or Xlib I can press a combination of keys to send an order to my application when the application does not have focus?
I'm trying out the following code but it's not working:
Display* dpy = XOpenDisplay(0);
Window root = DefaultRootWindow(dpy);
XEvent ev;
unsigned int modifiers = ControlMask | ShiftMask;
int keycode = 45;
int pointer_mode = GrabModeAsync;
int keyboard_mode = GrabModeAsync;
XGrabKey(dpy, AnyKey, modifiers, root, 0, pointer_mode, keyboard_mode);
XSelectInput(dpy, root, KeyPressMask);
while(1)
{
XNextEvent(dpy, &ev);
if (ev.type == KeyPress)
{
printf("key has been pressed\n");
break;
}
else printf("event type is %i\n",ev.type);
}
but I get: Gdk-ERROR **: The program 'test' received an X Window System error. This probably reflects a bug in the program. The error was 'BadAccess (attempt to access private resource denied)'. (Details: serial 7 error_code 10 request_code 33 minor_code 0) (Note to programmers: normally, X errors are reported asynchronously; that is, you will receive the error a while after causing it. To debug your program, run it with the --sync command line option to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.) aborting...
thanks
