public LoginWindow() : base(Gtk.WindowType.Toplevel)
{
Build();
//set logo
MainLogo.Pixbuf = new Gdk.Pixbuf(res_path + "admin.png");
PwdLogo.Pixbuf = new Gdk.Pixbuf(res_path + "pwd.png");
UserLogo.Pixbuf = new Gdk.Pixbuf(res_path + "user.png");
//set title
TitleLabel.Text = "Score Management System";
TitleLabel.ModifyFont(Pango.FontDescription.FromString("Arial,Bold Italic 12"));
}