Place a Tab Canvas within a Tab Canvas (there is more Stack Canvas)

I Use Forms [32 Bit] Version 10.1.2.0.2.
Hi All.. I have the same problem with this case ( Place a Tab Canvas within a Tab Canvas ).
but I need help with my case, what if there is more stack canvas, like this :
- I created Tab Canvas first, then
- in my first Tab Canvas I put the new tab canvas (this solved), then
- I create again new Tab Canvas in the second Tab Canvas.
How do I control that in Trigger Level Form - WHEN-TAB-PAGE-CHANGED ? if I want to show if :
- First Tab Canvas I klik then the second Tab Canvas is show (solved), then if
- I klik second Tab Canvas then the third Tab Canvas is show. (this my case)
thx b4 to all ...... I am newbie in forms
Edited by: 973372 on Dec 14, 2012 2:05 PM

not yet

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Place image on canvas

Hi.
I am trying to place image on canvas.
However the image doesn't show!!!!!!!!!!!!! :(
no error and compiles well....
private void AddTile(String image, int startx, int starty, int endx, int endy)
try{
tiles = ImageIO.read(new File(image));
catch(Exception e)
System.out.println("Image not Found");
Graphics2D a =(Graphics2D)tiles.getGraphics();
a.drawImage(tiles, 20,20,20,20,TileCanvas);
if the above function is called the image should be placed on canvas right?
TileCanvas is a canvas, and tiles is BufferedImage.
just in case I'll put my source code followed by this
* MapEditor.java
* Created on 2006�� 7�� 20�� (��), �� 11:48
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.imageio.*;
import java.io.*;
* @author SeiKwon
public class EditorComponent extends javax.swing.JFrame
private java.awt.Button AddTile;
private java.awt.Button DeleteTile;
private javax.swing.JMenu FileMenu;
private javax.swing.JMenuItem LoadFile;
private javax.swing.JPanel ManageTilePanel;
private java.awt.Canvas MapCanvas;
private javax.swing.JMenuBar MenuBar;
private javax.swing.JMenuItem SaveFile;
private javax.swing.JScrollPane ShowMapScroll;
private java.awt.Canvas TileCanvas;
private javax.swing.JScrollPane TileScroll;
private BufferedImage tiles;
private int tilecount = 0;
/** Creates new form MapEditor */
public EditorComponent()
initComponents();
AddTile("test.jpg", 0, 0, 10, 10);
private void initComponents()
ManageTilePanel = new javax.swing.JPanel();
TileScroll = new javax.swing.JScrollPane();
TileCanvas = new java.awt.Canvas();
AddTile = new java.awt.Button();
DeleteTile = new java.awt.Button();
ShowMapScroll = new javax.swing.JScrollPane();
MapCanvas = new java.awt.Canvas();
MenuBar = new javax.swing.JMenuBar();
FileMenu = new javax.swing.JMenu();
SaveFile = new javax.swing.JMenuItem();
LoadFile = new javax.swing.JMenuItem();
getContentPane().setLayout(new org.netbeans.lib.awtextra.AbsoluteLayout());
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
ManageTilePanel.setLayout(null);
ManageTilePanel.setBorder(new javax.swing.border.TitledBorder("Tiles"));
TileCanvas.setBackground(new java.awt.Color(255, 255, 255));
TileScroll.setViewportView(TileCanvas);
ManageTilePanel.add(TileScroll);
TileScroll.setBounds(10, 22, 100, 230);
AddTile.setLabel("Add");
ManageTilePanel.add(AddTile);
AddTile.setBounds(10, 260, 50, 26);
DeleteTile.setLabel("Delete");
ManageTilePanel.add(DeleteTile);
DeleteTile.setBounds(60, 260, 50, 26);
getContentPane().add(ManageTilePanel, new org.netbeans.lib.awtextra.AbsoluteConstraints(310, 10, 119, 290));
ManageTilePanel.getAccessibleContext().setAccessibleName("TilesPanel");
MapCanvas.setBackground(new java.awt.Color(255, 255, 255));
MapCanvas.addMouseListener(new java.awt.event.MouseAdapter()
public void mouseEntered(java.awt.event.MouseEvent evt)
MapCanvasMouseEntered(evt);
ShowMapScroll.setViewportView(MapCanvas);
getContentPane().add(ShowMapScroll, new org.netbeans.lib.awtextra.AbsoluteConstraints(12, 10, 290, 290));
FileMenu.setText("File");
FileMenu.setContentAreaFilled(false);
SaveFile.setIcon(new javax.swing.ImageIcon("D:\\java\\MapEditor\\Image\\Save16.gif"));
SaveFile.setText("Save");
SaveFile.addActionListener(new java.awt.event.ActionListener()
public void actionPerformed(java.awt.event.ActionEvent evt)
SaveFileActionPerformed(evt);
FileMenu.add(SaveFile);
LoadFile.setIcon(new javax.swing.ImageIcon("D:\\java\\MapEditor\\Image\\Open16.gif"));
LoadFile.setText("Load");
LoadFile.addActionListener(new java.awt.event.ActionListener()
public void actionPerformed(java.awt.event.ActionEvent evt)
LoadFileActionPerformed(evt);
FileMenu.add(LoadFile);
MenuBar.add(FileMenu);
setJMenuBar(MenuBar);
pack();
private void MapCanvasMouseEntered(java.awt.event.MouseEvent evt)
Cursor cursorshape = MapCanvas.getCursor();
MapCanvas.setCursor(cursorshape.getPredefinedCursor(CROSSHAIR_CURSOR));
private void AddTile(String image, int startx, int starty, int endx, int endy)
try{
tiles = ImageIO.read(new File(image));
catch(Exception e)
System.out.println("Image not Found");
Graphics2D a =(Graphics2D)tiles.getGraphics();
a.drawImage(tiles, 20,20,20,20,TileCanvas);
private void LoadFileActionPerformed(java.awt.event.ActionEvent evt)
FileDialog fd = new FileDialog(this, "Open", FileDialog.LOAD);
//fd.setFile("*.map");
fd.setDirectory(".");
fd.setVisible(true);
String filename = fd.getFile();
System.out.println(filename);
private void SaveFileActionPerformed(java.awt.event.ActionEvent evt)
FileDialog fd = new FileDialog(this, "Save", FileDialog.SAVE);
//fd.setFile("*.map");
//fd.setFilenameFilter("*.map"); // HOW TO USE?????????????
fd.setDirectory(".");
fd.setVisible(true);
String filename = fd.getFile();
System.out.println(filename);
public static void main(String args[])
java.awt.EventQueue.invokeLater(new Runnable()
public void run()
new EditorComponent().setVisible(true);
}

You have at least two problems.
1) You are mixing AWT and Swing. Instead of using a Canvas you should use either a JComponent or a JPanel.
2) In Swing, drawing such are you are doing should be done within the paintComponent(Graphics g) method using the Graphics provided as an argument to the method.
P.S. I can't test you code because for some reason you feal the need to use a NetBeans specific layout manager.

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Place a Tab Canvas within a Tab Canvas (there is more Stack Canvas)

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