public static void open_signup_window(double pos_x, double pos_y)
{
if (window_manager.signup_frames.Count + 1 > configurations.max_signup_frame)
return;
window_frame frame = new window_frame();
signup s = new signup();
s.parent = frame;
s.user_pin.parent = frame;
s.load_window();
frame.window_content.Content = s;
window_manager.signup_frames.Add(frame);
open_window(frame, pos_x, pos_y);
frame.hide_change_view();
frame.set_title("Sign up");
frame.set_icon(configurations.img_signup_window_icon);
}