JInternalframe always on top instead of overlapping

Hello guys,
I have some JInternalFrames but one window paints its content above all, even overlapping frames. The code looks like this:
package visnav.bachelor.gallery;
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Insets;
import java.awt.ScrollPane;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Vector;
import java.lang.Math;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.SwingUtilities;
import javax.swing.border.EtchedBorder;
import visnav.bachelor.DataLoader;
import visnav.bachelor.preview.PreviewMap_Ext;
import visnav.common.Config;
import visnav.common.DBListener;
import visnav.common.Options;
import visnav.common.Photo;
* The class Gallery adds a window in which all selected Photos (=their
* thumbnails) can be seen.
* @author Florian Kratschmann
public class Gallery extends ScrollPane implements DBListener {
     private static Vector<Photo> selectedPhotos;
     private static Gallery instance;
     public JPanel content = new JPanel(new ModifiedFlowLayout(
               ModifiedFlowLayout.LEFT, 6, 6));
     public String filename = "";
      * Constructor which creates a new Gallery object.
     public Gallery() {
          selectedPhotos = DataLoader.getInstance().getSelectedPhotos();
          this.updateGUI(selectedPhotos);
     public static Gallery getInstance() {
          if (instance == null)
               instance = new Gallery();
          return instance;
     public void collectionChanged() {
          selectedPhotos = DataLoader.getInstance().getSelectedPhotos();
          this.updateGUI(selectedPhotos);
     public void selectionChanged() {
          selectedPhotos = DataLoader.getInstance().getSelectedPhotos();
          this.updateGUI(selectedPhotos);
     public void valueChanged() {
          selectedPhotos = DataLoader.getInstance().getSelectedPhotos();
          this.updateGUI(selectedPhotos);
     public void updateGUI(Vector<Photo> data) {
          content.removeAll();
          removeAll();
          for (int i = 0; selectedPhotos.size() > i; i++) {
               filename = Gallery_Ext.getFileName(selectedPhotos.get(i)
                         .getFileLocation());
               final int j = i;
               ImageIcon icon = (new ImageIcon(selectedPhotos.get(i)
                         .getThumbLocation()));
               if (filename.length() > 15) {
                    filename = filename.substring(0, 15) + "...";
               JButton thumb = new JButton("<html><p align=\"center\">" + filename
                         + "<br>[" + (i + 1) + "/" + selectedPhotos.size()
                         + "]<br></p></html>", icon);
               thumb.setContentAreaFilled(false);
               thumb.addActionListener(new ActionListener() {
                    public void actionPerformed(ActionEvent e) {
                         Gallery_Ext.openMIME(selectedPhotos.get(j)
                                   .getFileLocation());
               thumb.setVerticalTextPosition(JLabel.BOTTOM);
               thumb.setHorizontalTextPosition(JLabel.CENTER);
               thumb.setBorder(new EtchedBorder());
               thumb.setPreferredSize(new Dimension(140, 140));
               content.add(thumb);
          add(content);
      * A modified version of FlowLayout that allows containers using this Layout
      * to behave in a reasonable manner when placed inside a JScrollPane
      * Workaround made to fit size of screen on first updateGUI firing
      * @author Babu Kalakrishnan
      * @author Florian Kratschmann
     public class ModifiedFlowLayout extends FlowLayout {
          public ModifiedFlowLayout() {
               super();
          public ModifiedFlowLayout(int align) {
               super(align);
          public ModifiedFlowLayout(int align, int hgap, int vgap) {
               super(align, hgap, vgap);
          public Dimension minimumLayoutSize(Container target) {
               return computeSize(target, false);
          public Dimension preferredLayoutSize(Container target) {
               return computeSize(target, true);
          private Dimension computeSize(Container target, boolean minimum) {
               synchronized (target.getTreeLock()) {
                    int hgap = getHgap();
                    int vgap = getVgap();
                    int w = target.getWidth();
                    if (w == 0) {
                         Dimension size = new Dimension(0, 0);
                         int noOfTn = selectedPhotos.size();
                         try {
                              size = (Config.getDimension("InternalFrameSize4",
                                        new Dimension(0, 0)));
                                             if (size.width==0){size.setSize(300, 200);}
                              int noOfRows = (int) Math.ceil(size.width / 140);
                              int heightNeeded = (int) ((noOfTn*1.25 / noOfRows) * 140);
                              size.setSize(140, heightNeeded);
                         } catch (Exception ex) {
                              ex.printStackTrace();
                              int peter = 2;
                              int heightNeeded = ((noOfTn / peter) * 280)+140;
                              size.setSize(140, heightNeeded + 100);
                         return size;
                    } else {
                         // w = Integer.MAX_VALUE;
                         Insets insets = target.getInsets();
                         if (insets == null)
                              insets = new Insets(0, 0, 0, 0);
                         int reqdWidth = 0;
                         int maxwidth = w - (insets.left + insets.right + hgap * 2);
                         int n = target.getComponentCount();
                         int x = 0;
                         int y = insets.top;
                         int rowHeight = 0;
                         for (int i = 0; i < n; i++) {
                              Component c = target.getComponent(i);
                              if (c.isVisible()) {
                                   Dimension d = minimum ? c.getMinimumSize() : c
                                             .getPreferredSize();
                                   if ((x == 0) || ((x + d.width) <= maxwidth)) {
                                        if (x > 0) {
                                             x += hgap;
                                        x += d.width;
                                        rowHeight = Math.max(rowHeight, d.height);
                                   } else {
                                        x = d.width;
                                        y += vgap + rowHeight;
                                        rowHeight = d.height;
                                   reqdWidth = Math.max(reqdWidth, x);
                         y += rowHeight;
                         return new Dimension(
                                   reqdWidth + insets.left + insets.right, (int) (y*1.2));
                         // return new Dimension(120, 300);
}Any idea why it's content is always on top?
Cheers,
Flo

As the title I can have inside a JDesktopPane some JinternalFrame "always on top" compared to one that makes the background?You might get better help by explaining what you want to achieve, rather than how you want to achieve it.
You can do custom painting in a JDesktopPane, you know.
db

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