Question

我有一个带有大量文本框的Windows 8商店应用程序。当我按下键盘上的Enter键时，我希望将focues移动到下一个控件。

我该怎么做？

由于

Answer 1

您可以处理TextBoxes上的KeyDown / KeyUp事件（取决于您是否要在按键的开头或结尾处转到下一个事件。）

示例XAML：

<TextBox KeyUp="TextBox_KeyUp" />

代码背后：

    private void TextBox_KeyUp(object sender, KeyRoutedEventArgs e)
    {
        TextBox tbSender = (TextBox)sender;

        if (e.Key == Windows.System.VirtualKey.Enter)
        {
            // Get the next TextBox and focus it.

            DependencyObject nextSibling = GetNextSiblingInVisualTree(tbSender);
            if (nextSibling is Control)
            {
                // Transfer "keyboard" focus to the target element.
                ((Control)nextSibling).Focus(FocusState.Keyboard);
            }
        }
    }

完整的示例代码，包括GetNextSiblingInVisualTree（）辅助方法的代码： https://github.com/finnigantime/Samples/tree/master/examples/Win8Xaml/TextBox_EnterMovesFocusToNextControl

请注意，使用FocusState.Keyboard调用Focus（）会在其控件模板（例如Button）中显示具有此类rect的元素周围的虚线焦点rect。使用FocusState.Pointer调用Focus（）不会显示焦点rect（您正在使用触摸/鼠标，因此您知道要与哪个元素进行交互）。

Answer 2

我对＆＃34; GetNextSiblingInVisualTree＆＃34;进行了一些改进。功能。此版本搜索下一个TextBox而不是下一个对象。

import java.awt.*;
import java.awt.datatransfer.Transferable;
import javax.swing.*;
import java.awt.event.InputEvent;

public class DnDTransferableTest {

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

public DnDTransferableTest() {
    EventQueue.invokeLater(new Runnable() {
        @Override
        public void run() {
            JFrame frame = new JFrame("Testing");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.setLayout(new BorderLayout());
            frame.add(new TestPane());
            frame.pack();
            frame.setLocationRelativeTo(null);
            frame.setVisible(true);
        }
    });
}

public class TestPane extends JPanel {

    private JLabel label1;
    private JLabel label2;

    public TestPane() {

        setLayout(new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();
        gbc.gridx = 0;
        gbc.gridy = 0;
        gbc.weighty = 1;
        gbc.weightx = 1;
        gbc.fill = GridBagConstraints.BOTH;
        label1 = new JLabel("Drag Me.");
        add(label1, gbc);

        label2 = new JLabel("Drag Me too.");
        gbc.gridx++;
        gbc.weightx = 1;
        gbc.fill = GridBagConstraints.NONE;
        add(label2, gbc);

        setTransferHandler(new TransferHandler()
        {
            @Override
            public Transferable createTransferable(final JComponent c)
            {
                System.out.println("Inside Panel : createTransferable");
                return null;
            }

            @Override
            public int getSourceActions(final JComponent c)
            {
                System.out.println("Inside Panel : getSourceActions()");
                return COPY;
            }

            @Override
            public void exportAsDrag(final JComponent comp, final InputEvent e,  final int action)
            {
                System.out.println("Inside Panel : getSourceActions()");
                  super.exportAsDrag(comp, e, action);
            }
        });

        label1.setTransferHandler(new TransferHandler()
        {
            @Override
            public Transferable createTransferable(final JComponent c)
            {
                System.out.println("Inside Label : createTransferable");
                return null;
            }

            @Override
            public int getSourceActions(final JComponent c)
            {
                System.out.println("Inside Label : getSourceActions()");
                return COPY;
            }

            @Override
            public void exportAsDrag(final JComponent comp, final InputEvent e,  final int action)
            {
                System.out.println("Inside Label : getSourceActions()");
                  super.exportAsDrag(comp, e, action);
            }
        });

    }
}
}

在Windows 8 Store应用程序中，在“进入/返回”按钮上移动到下一个控件

2 个答案: