如果传递给 build 方法的 BuildContext 是指父窗口小部件，那么传递给根窗口小部件的 build() 的上下文是指什么？

Question

Here is an example code:

import 'package:flutter/material.dart';

main(){
runApp(MyApp());
}
class MyApp extends StatelessWidget {
    build(context){     //where does this this context point to
        return MaterialApp();
    }
}

BuildContext

A handle to the location of a widget in the widget tree.

Each widget has its own BuildContext, which becomes the parent of the widget returned by the StatelessWidget.build.

Answer 1

BuildContext doesn't refer to the parent widget. It refers to the current widget.

So with:

class MyApp extends StatelessWidget {
    build(context){     //where does this this context point to
        return MaterialApp();
    }
}

The BuildContext points to MyApp .