Cocos2dx v3.x c++ new ui button *solved*

cocos2d-x C++
#1

Hi,

I am trying to use the new ui button in Cocos2dx v3.x (C++ visual studio 2013 on win7).

I have the code below, which works. When I click the button it closes the app,
but it does not trigger on touch end. As soon as the button is touched
it closes. If I hold the touch down it shouldn’t close until I let go.

How do I do this? Or how do I use this ui button properly ? Thanks

h

void touchEvent(cocos2d::Touch* touch, cocos2d::Event* event);

cpp

auto uButton = ui::Button::create();
        uButton->setTouchEnabled(true);
        //uButton->onTouchEnded(touch,event);
        uButton->loadTextures(“ButtonNormal.png”, “ButtonSelected1.png”, “”);
        uButton->setPosition(Point(visibleSize.width / 2, visibleSize.height / 2) + Point(0, -50));
        uButton->addTouchEventListener(this, (ui::SEL_TouchEvent)&MenuScene::touchEvent);
        addChild(uButton);

cpp

void MenuScene::touchEvent(Touch *touch, Event *event)
{
#if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8) || (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT)
    MessageBox("You pressed the close button. Windows Store Apps do not implement a close button.", "Alert");
    return;
#endif

    Director::getInstance()->end();

#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
    exit(0);
#endif
}
Cocos2dx v3.0 UI Classes - gotta get this workign
#2

First of all, you are using a wrong signature of the callback function. I wonder why it even compiled. It shoud be void func(Ref*, Widget::TouchEventType).
In the callback you can check the type of the event. In your case you should close the app when the event has type TouchEventType::ENDED.

UPD. Ah, I see. You used a deprecated overload of addTouchEventListener method and that’s why your callback was accepted. So, you’re ok watching warnings during compilation? They are not accidental and you’d better pay attention to them.

#3

Thanks dotsquid. Sorry, I am new to cocos and c++. Yes, I didn’t notice that warning. I think it is because I am getting alot of warnings that hide the important ones, so I will look at understanding and working through them.

Can you tell me what replaces the addTouchEventListener method since it is deprecated ?
I might have to download the latest cocos version as well (I think I am using 3.0).

Thanks so much for your replies.

#4 
void addTouchEventListener(ccWidgetTouchCallback callback);
typedef std::function<void(Ref*,Widget::TouchEventType)> ccWidgetTouchCallback;
#5

Thanks dotsquid. I have figured it out now.

Solution was as follows:

  1. Download Cocos2dx v3.1.1 and setup Project to use updated SDK.

  2. Code changes:

     auto uButton = ui::Button::create();

    uButton->setTouchEnabled(true);
        uButton->loadTextures(“ButtonNormal.png”, “ButtonSelected1.png”, “”);
        uButton->setPosition(Point(visibleSize.width / 2, visibleSize.height / 2) + Point(0, -50));
        uButton->addTouchEventListener(CC_CALLBACK_2(MenuScene::TouchEnd, this));
        addChild(uButton);

    void MenuScene::TouchEnd(Ref* pSender, ui::Widget::TouchEventType eEventType)
    {

    if (eEventType != ui::Widget::TouchEventType::ENDED) return;

    #if (CC_TARGET_PLATFORM == CC_PLATFORM_WP8) || (CC_TARGET_PLATFORM == CC_PLATFORM_WINRT)
        MessageBox(“You pressed the close button. Windows Store Apps do not implement a close button.”, “Alert”);
        return;
    #endif

    Director::getInstance()->end();

    #if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
        exit(0);
    #endif
    }