WebView and setOnJSCallback Error (No viable conversion)

cocos2d-x C++
#1

I’m attempting to use a UIWebView (cocos2d::experimental::ui::WebView) along with a callback for setOnJSCallback & setJavascriptInterfaceScheme.

I am getting a compile error on the “myWebView->setOnJSCallback(CC_CALLBACK_1(MyScene::callbackFromJS,this));” line below:

No viable conversion from ‘__bind<void (MyScene::*)(cocos2d::experimental::ui::WebView *, std::__1::basic_string *), MyScene *, const std::__1::placeholders::__ph<1> &>’ to ‘const cocos2d::experimental::ui::WebView::ccWebViewCallback’ (aka ‘const function<void (cocos2d::experimental::ui::WebView *, const basic_string<char, char_traits, allocator > &)>’)

I’m not understanding why this is occurring or how to fix it because my understanding is that CC_CALLBACK_1 would have a placeholder for the return value std::string coming back from the WebView when this is fired.

Code is listed below.

Can anyone help me determine what may be incorrect?

h file:

#ifndef __MyScene_SCENE_H__
#define __MyScene_SCENE_H__

#include "cocos2d.h"
#include "ui/CocosGUI.h"

class MyScene : public cocos2d::Layer
{
public:
    static cocos2d::Scene* createScene();
    virtual bool init();
    CREATE_FUNC(MyScene);
    virtual void callbackFromJS(cocos2d::experimental::ui::WebView* webview, std::string* url);
};

#endif // __MyScene_SCENE_H__

cpp file:

#include "MyScene.h"
#include "ui/CocosGUI.h"

USING_NS_CC;

Scene* MyScene::createScene()
{
    auto scene = Scene::create();
    auto layer = MyScene::create();
    scene->addChild(layer);
    return scene;
}

bool MyScene::init()
{
    if ( !Layer::init() )
    {
        return false;
    }
    
    auto size = Director::getInstance()->getWinSize();
    //auto label = Label::createWithSystemFont("MyScene", "Arial", 40);
    //label->setPosition(size/2);
    //this->addChild(label);

    auto myWebView = cocos2d::experimental::ui::WebView::create();
    myWebView->loadURL("https://someurl.com");
    myWebView->setJavascriptInterfaceScheme("customtag");
    myWebView->setOnJSCallback(CC_CALLBACK_1(MyScene::callbackFromJS,this));
    myWebView->setAnchorPoint(Point(0,0));
    myWebView->setPosition(Point(10,10));
    this->addChild(myWebView);

    return true;
}

void MyScene::callbackFromJS(cocos2d::experimental::ui::WebView* webview, std::string* url)
{
    log("user clicked a custom url");
}