function MyProcessDialog( config ) {
	MyProcessDialog.parent.call( this, config );
}
OO.inheritClass( MyProcessDialog, OO.ui.ProcessDialog );
MyProcessDialog.static.name = 'myProcessDialog';
MyProcessDialog.static.title = 'Process dialog';
MyProcessDialog.prototype.initialize = function () {
	var loremIpsum, fieldset, panel;

	MyProcessDialog.parent.prototype.initialize.apply( this, arguments );

	loremIpsum = 'Lorem ipsum dolor sit amet, consectetur adipisicing elit, ' +
		'sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.\u200E';

	fieldset = new OO.ui.FieldsetLayout( {
		label: 'Fieldset',
		help: loremIpsum,
		items: [
			new OO.ui.FieldLayout( new OO.ui.CheckboxInputWidget(), {
				align: 'inline',
				label: 'Field',
				help: loremIpsum
			} )
		]
	} );

	panel = new OO.ui.PanelLayout( { padded: true, expanded: false } );

	panel.$element.append( fieldset.$element );
	this.$body.append( panel.$element );
};
var windowManager = new OO.ui.WindowManager();
$( 'body' ).append( windowManager.$element );
var dialog = new MyProcessDialog();
windowManager.addWindows( [ dialog ] );
windowManager.openWindow( dialog );