import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.scene.DepthTest;
import javafx.scene.Group;
import javafx.scene.PerspectiveCamera;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.Region;
import javafx.scene.shape.Rectangle;
import javafx.scene.text.Font;
import javafx.scene.text.Text;
import javafx.scene.transform.Rotate;
import javafx.stage.Stage;


/**
 *
 * @author Alexander Kouznetsov
 */
public class RegionStyleTest extends Application{

    @Override
    public void start(Stage primaryStage) {
        Region region = new Region() {
            {
                Button button = new Button("button");
                getChildren().setAll(button);
            }
        };
        region.setMinSize(100, 100);
        region.setPrefSize(100, 100);
        region.widthProperty().addListener(new ChangeListener<Number>() {

            @Override
            public void changed(ObservableValue<? extends Number> ov, Number t, Number t1) {
                System.out.println("width = " + t1);
            }
        });
        region.setStyle("-fx-border-color: red; -fx-background-color: yellow;");
        
        Scene scene = new Scene(region);
        
        primaryStage.setScene(scene);
        primaryStage.setVisible(true);        
    }

    public static void main(String[] args) {
        launch(args);
    }

}