function panel_toolbar_icon(_name, _sprite, _index, _tooltip, _onCilck, _onRClick = 0, _onWUp = 0, _onWDown = 0) constructor {
    name     = _name;
    sprite   = _sprite;
    index    = _index;
    tooltip  = _tooltip;
    onCilck  = _onCilck;
    onRClick = _onRClick;
    onWUp    = _onWUp;
    onWDown  = _onWDown;
}