你可以利用MenuButton
这个:
@Override
public void start(Stage primaryStage) {
MenuButton m = new MenuButton("Eats");
m.setPrefWidth(100);
m.setPopupSide(Side.RIGHT);
m.getItems().addAll(new MenuItem("Burger"), new MenuItem("Hot Dog"));
MenuButton m2 = new MenuButton("Drinks");
m2.setPrefWidth(100);
m2.setPopupSide(Side.RIGHT);
m2.getItems().addAll(new MenuItem("Juice"), new MenuItem("Milk"));
VBox root = new VBox();
root.getChildren().addAll(m, m2);
Scene scene = new Scene(root, 300, 250);
scene.getStylesheets().add(getClass().getResource("style.css").toExternalForm());
primaryStage.setScene(scene);
primaryStage.show();
}
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其中的style.css是
.menu-button {
-fx-skin: "com.sun.javafx.scene.control.skin.MenuButtonSkin";
-fx-background-color: red, green, green, lightgreen;
-fx-background-insets: 0 0 -1 0, 0, 1, 2;
-fx-background-radius: 0;
-fx-padding: 0.0em; /* 0 */
-fx-text-fill: -fx-text-base-color;
}
/* TODO workaround for RT-19062 */
.menu-button .label { -fx-text-fill: -fx-text-base-color; }
.menu-button:focused {
-fx-color: beige;
-fx-background-color: -fx-focus-color, -fx-outer-border, -fx-inner-border, -fx-body-color;
-fx-background-insets: -1.4, 0, 1, 2;
-fx-background-radius: 0;
}
.menu-button:hover {
-fx-color: darkgreen;
}
.menu-button:armed {
-fx-color: greenyellow;
}
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这些选择器部分被从caspian.css中获取并覆盖.根据需要更改颜色首选项,您还可以通过css删除按钮的箭头.
这种方法的缺点是难以制作嵌套的菜单项.