In this recipe, we will explain how to create buttons. Before the Button class was released, we created a button by using the Menu class that was introduced in the previous recipe. Due to the Button class, it has become possible to finely control the button press.
To use the Button class and other GUI parts mentioned in this chapter, you must include the CocosGUI.h file. Let's add the following line of code in HelloWorldScene.cpp:
#include "ui/CocosGUI.h"
Let's create a button using the Button class. Firstly, you will generate a button instance by using item1.png image that was used in the previous recipe. We will also specify the callback function as a lambda expression by using the addEventListener method when the button is pressed. You can create the button by using the following code:
auto size = Director::getInstance()->getVisibleSize();
auto button = ui::Button::create("res/item1.png");
button->setPosition(size/2);
this->addChild(button...