child:

Text

'Increment Counter'

)),

Text

_counter

toString

()),

);

},

),

));

class

_ResizingBox

extends

StatefulWidget

_ResizingBox

this

child1

this

child2

);

final

Widget

child1

final

Widget

child2

@override

State

StatefulWidget

createState

()

_ResizingBoxState

();

class