JavaFx布局：消失/无组织窗格

Question

我有一个背景窗格，用于绘制与BorderPane、VBox和HBox一起使用时不显示的对象。此外，我的BorderPane没有正确定位布局（左、下、右）。我尝试使用多个不同的窗格并向其中添加VBox和HBox，但是我遇到了类似的错误，布局与预期不符，主绘图窗格（画布）消失了。

BorderPane bp = new BorderPane();
button1 = new Button("Undo");
button2 = new Button("Erase");
HBox hb = new HBox(10);
hb.getChildren().addAll(button1, button2);

TilePane tp = new TilePane();
vb = new VBox();
vb.setPadding(new Insets(10, 10, 10, 10));
vb.setSpacing(25);
vb.setStyle("-fx-padding: 10;" + 
        "-fx-border-style: solid inside;" + 
        "-fx-border-width: 2;" +
        "-fx-border-insets: 5;" + 
        "-fx-border-radius: 5;" + 
        "-fx-border-color: black;");

colorCombo = new ComboBox<String>();
colorCombo.getItems().addAll("Black","Blue","Green","Red","Yellow","Orange","Pink");
colorCombo.setValue("Black");
colorCombo.setMinWidth(100);

ToggleGroup group1 = new ToggleGroup();

rbutton1 = new RadioButton("Rectangle");
rbutton1.setToggleGroup(group1);
rbutton1.setMinWidth(80);
rbutton1.setSelected(true);
rbutton2 = new RadioButton("Circle");
rbutton2.setToggleGroup(group1);
rbutton2.setMinWidth(80);

canvas = new Pane();
canvas.setStyle("-fx-background-color: beige;");

vb.getChildren().addAll(colorCombo, rbutton1, rbutton2);
tp.getChildren().add(vb);
bp.setLeft(tp);
bp.setBottom(hb);
bp.setRight(canvas);
this.getChildren().addAll(bp);

TilePane和BorderPane是我最近的实验。我使用bp.setright（canvas）；查看是否可以显示画布，尽管我希望画布是整个背景，而不仅仅是右边。画布不显示。

Answer 1

我创建了三个独立的网格窗格，并将vbox、hbox和canvas（在设置了最小高度和宽度之后）添加到网格窗格中，然后将网格窗格添加到边界窗格中。这就为我的程序安排好了布局。