bool Widget::hitTest(const CCPoint &pt)
{
    CCPoint nsp = convertToNodeSpace(pt);
    CCRect bb = CCRect(-_size.width * m_obAnchorPoint.x - _touchExpandSize.width/2 + _touchExpandOffset.x, -_size.height * m_obAnchorPoint.y - _touchExpandSize.height/2 + _touchExpandOffset.y, _size.width + _touchExpandSize.width, _size.height + _touchExpandSize.height);
    if (nsp.x >= bb.origin.x && nsp.x <= bb.origin.x + bb.size.width && nsp.y >= bb.origin.y && nsp.y <= bb.origin.y + bb.size.height)
    {
        return true;
    }
    return false;
}

local opactityButton = Button:create()
opactityButton:registerScriptHandler(function (eventType)
    -- body
    if eventType == "enter" then
        print('opactityButton enter')
        opactityButton:setEnabled(true)
        opactityButton:setTouchEnabled(true)
        -- opactityButton:setSizePercent(ccp(0.2, 0.2))

        opactityButton:setContentSize(aIVSize)
        opactityButton:setSize(aIVSize)
        opactityButton:setPosition(ccp(400, 400))
        opactityButton:setAnchorPoint(ccp(0.5, 0.5))
    elseif eventType == "exit" then
        print("exit")
    end
end)
-- some other codes
local touchGroup = TouchGroup:create()
runningScene:addChild(touchGroup)