arrow button

       作为一名AI机器人，我可以提供与arrow button相关的各种信息和建议，包括最新的研究成果和实践经验。

1.请教java中setUI的用法

2.在windows界面借助dev下：dropdownbutton 如何添加下拉选项？麻烦大侠给出详解，本人刚接触控件，谢谢！

3.请问如何让JComboBox的右边的下拉按钮变得没有边框？

4.apr和effective annual rate 的区别

请教java中setUI的用法

       ja中setUI的用法：

       语法：public void setUI(ComboBoxUI ui)

       举例：

       import ja.awt.BorderLayout;

       import jax.swing.JButton;

       import jax.swing.JComboBox;

       import jax.swing.JComponent;

       import jax.swing.JFrame;

       import jax.swing.plaf.ComboBoxUI;

       import jax.swing.plaf.ComponentUI;

       import jax.swing.plaf.basic.BasicArrowButton;

       import jax.swing.plaf.basic.BasicComboBoxUI;

       public class Main {

        public static void main(final String args[]) {

        final String labels[] = { "A", "B", "C", "D", "E" };

        JFrame frame = new JFrame("Popup JComboBox");

        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JComboBox comboBox = new JComboBox(labels);

        comboBox.setUI((ComboBoxUI) MyComboBoxUI.createUI(comboBox));

        frame.add(comboBox, BorderLayout.NORTH);

        frame.setSize(300, 200);

        frame.setVisible(true);

        }

        static class MyComboBoxUI extends BasicComboBoxUI {

        public static ComponentUI createUI(JComponent c) {

        return new MyComboBoxUI();

        }

        protected JButton createArrowButton() {

        JButton button = new BasicArrowButton(BasicArrowButton.EAST);

        return button;

        }

        }

       }

在windows界面借助dev下：dropdownbutton 如何添加下拉选项？麻烦大侠给出详解，本人刚接触控件，谢谢！

       onMouseOver

       就是鼠标经过……也就是鼠标

       悬停

       在指定的范围内

       onMouseOut

       相反，就是移出这个范围……………………

       上面那段代码基本上就是鼠标经过的时候显示一个层，然后鼠标移开后这个层就消失………………

请问如何让JComboBox的右边的下拉按钮变得没有边框？

       DevExpress.XtraBars.BarManager barManager = new DevExpress.XtraBars.BarManager();

        DevExpress.XtraBars.PopupMenu pMenu = new DevExpress.XtraBars.PopupMenu();

        barManager.Form = this;

        pMenu.Manager = barManager;

        dropBtnTiJiao.ArrowButtonClick += (s,e) => {

        pMenu.ShowPopup(new Point(Control.MousePosition.X-dropBtnTiJiao.Width,Control.MousePosition.Y+12));

        };

        BarButtonItem barItem1 = new BarButtonItem() { Name = "item1", Caption = "提交给质管" };

        //BarButtonItem barItem2 = new BarButtonItem() { Name = "item1", Caption = "邮件提醒设置" };

        pMenu.AddItems(new BarItem[]{barItem1});

apr和effective annual rate 的区别

       重写configureArrowButton方法,先调用父类的方法,如果这个JComboBox设置了三角按钮,就用setBorder方法创建一个占用空间但没有绘制的空边框,3333是上左下右的边框线宽

       您好，1. Nominal (stated) annual interest rate or annual percentage rate (APR)

        The stated annual rate without considering the effect of compounding

       2. Effective annual interest rate (EAR) or effective annual yield (EAY)

        The annual rate after considering the effect of compounding

        EAR=APR if interest is compounded annually; otherwise, EAR > APR

       Example:

        If APR is 6% compounded monthly, what is the EAR?

        (1+.06/12)12 –1 = .061678 = 6.1678 percent

        If a bank changes 6 percent annual interest, but this interest is compounded monthly, then the actual interest charge is 6.1678 percent

       Using the BAII+ calculator to change nominal to effective annual rate:

       Step 1: Hit 2nd button (grey), then hit the CONV (the number 2) button

       Step2: Hit the down arrow button until you see “NOM=”

       Step 3: Enter 6 and then hit the ENTER or SET button

       Step 4: Hit the down arrow button until you see “C/Y”

       Step 5: Enter 12 and then hit the ENTER or SET button

        Step 6: hit the down arrow button until you see “EFF =”

        Final step: Hit the CPT button. Answer is: 6.1678%

       好了，今天关于“arrow button”的话题就讲到这里了。希望大家能够通过我的讲解对“arrow button”有更全面、深入的了解，并且能够在今后的学习中更好地运用所学知识。