我有JDesktopPane
,其中包含许多JInternalFrame
个。我希望能够将任何JInternalFrame
带到前面,覆盖任何其他活动帧。我找到了许多代码示例来执行此操作,但似乎都没有工作 - 框架不会在其他活动JInternalFrame
之上。 E.g。
public static void moveToFront(final JInternalFrame fr) { if (fr != null) { processOnSwingEventThread(new Runnable() { public void run() { fr.moveToFront(); fr.setVisible(true); try { fr.setSelected(true); if (fr.isIcon()) { fr.setIcon(false); } fr.setSelected(true); } catch (PropertyVetoException ex) { ex.printStackTrace(); } fr.requestFocus(); fr.toFront(); } }); } }
答案 0 :(得分:5)
根据API toFront或moveToFront应该工作(虽然从我阅读API到toFront看起来是两个中更好的)。这些JInternalFrames是否位于JDesktopPane中?根据你的帖子,它们似乎是。我想知道错误是否在其他地方。
考虑创建并发布SSCCE(请点击链接),这是一个小型的可编辑,可运行的程序,可以展示您解决此问题的最佳尝试。然后我们可以检查您的代码,运行它,修改它并最好能够帮助您解决它。
以下是我的SSCCE示例:
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.util.Random;
import javax.swing.*;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
public class InternalFrameToFront extends JPanel {
private static final int FRAME_MAX = 21;
private static final int DT_WIDTH = 700;
private static final int DT_HEIGHT = 500;
private static final Dimension DESKTOP_SIZE = new Dimension(DT_WIDTH, DT_HEIGHT);
private static final int IF_WIDTH = 150;
private static final int IF_HEIGHT = 100;
private static final Dimension INT_FRAME_SIZE = new Dimension(IF_WIDTH, IF_HEIGHT);
private Random random = new Random();
private JInternalFrame[] internalFrames = new JInternalFrame[FRAME_MAX];
public InternalFrameToFront() {
JDesktopPane desktop = new JDesktopPane();
desktop.setPreferredSize(DESKTOP_SIZE);
for (int i = 0; i < internalFrames.length; i++) {
JInternalFrame intFrame = new JInternalFrame("Frame Number " + i);
intFrame.setSize(INT_FRAME_SIZE);
int x = random.nextInt(DT_WIDTH - IF_WIDTH);
int y = random.nextInt(DT_HEIGHT - IF_HEIGHT);
intFrame.setLocation(x, y);
intFrame.setVisible(true);
desktop.add(intFrame);
internalFrames[i] = intFrame;
}
JSlider slider = new JSlider(0, FRAME_MAX - 1, 0);
slider.setMajorTickSpacing(5);
slider.setMinorTickSpacing(1);
slider.setPaintLabels(true);
slider.setPaintTicks(true);
JPanel sliderPanel = new JPanel();
sliderPanel.add(slider);
slider.addChangeListener(new ChangeListener() {
public void stateChanged(ChangeEvent ce) {
JSlider slider = (JSlider) ce.getSource();
if (!slider.getValueIsAdjusting()) {
int value = slider.getValue();
internalFrames[value].toFront();
}
}
});
setLayout(new BorderLayout());
add(desktop, BorderLayout.CENTER);
add(sliderPanel, BorderLayout.SOUTH);
}
private static void createAndShowUI() {
JFrame frame = new JFrame("InternalFrameToFront");
frame.getContentPane().add(new InternalFrameToFront());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
public static void main(String[] args) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
createAndShowUI();
}
});
}
}