Ant-design: Handling form submits with Form component

I am unsure on how to do form validation with the antd <Form/> component found here. The documentation specifies an onSubmit prop on the <Form/> component, which is passed an event. It then seems to trigger a function inside this.props.form. I am currently using the following code:

handleSubmit(e) {
   e.preventDefault();

  console.log('before' + e.target.value)

  this.props.validateFields((err, values) => {
  console.log('errors: ' + err)
  console.log(values)
    if (!err) {
      console.log('Received values of form: ', values);
    }
  });
}

<Form inline onSubmit={this.handleSubmit.bind(this)}>
    ....
</Form>

1. I am unable to retrieve values from the event passed into the submit callback, as e.target.value returns undefined.

   1. In the call to this.props.validateFields(), as shown in the documentation, where are these values coming from?