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哼哼 — Wed, 08 Nov 2006 08:55:00 GMT

可以参考这��文章：(x��)
http://www.eclipse.org/swt/widgets/

哼哼 2006-11-08 16:55 发表评论

SWT Layouts

哼哼 — Wed, 08 Nov 2006 08:51:00 GMT

可以参看此文章，写得相当详细�Q�）
http://www.eclipse.org/articles/Article-Understanding-Layouts/Understanding-Layouts.htm

哼哼 2006-11-08 16:51 发表评论

SWT Drag and Drop

哼哼 — Tue, 07 Nov 2006 10:05:00 GMT

1、拖拽Label的文字�?br />
public static void main (String [] args) {

  Display display = new Display ();
  final Shell shell = new Shell (display);
  shell.setLayout(new FillLayout());
  final Label label1 = new Label (shell, SWT.BORDER);
  label1.setText ("TEXT");
  final Label label2 = new Label (shell, SWT.BORDER);
  setDragDrop (label1);
  setDragDrop (label2);
  shell.setSize (200, 200);
  shell.open ();
  while (!shell.isDisposed ()) {
   if (!display.readAndDispatch ()) display.sleep ();
  }
  display.dispose ();
}

public static void setDragDrop (final Label label) {

  Transfer[] types = new Transfer[] {TextTransfer.getInstance()};
  int operations = DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_LINK;

  final DragSource source = new DragSource (label, operations);
  source.setTransfer(types);
  source.addDragListener (new DragSourceListener () {
   public void dragStart(DragSourceEvent event) {
    event.doit = (label.getText ().length () != 0);
   }
   public void dragSetData (DragSourceEvent event) {
    event.data = label.getText ();
   }
   public void dragFinished(DragSourceEvent event) {
    if (event.detail == DND.DROP_MOVE)
     label.setText ("");
   }
  });

  DropTarget target = new DropTarget(label, operations);
  target.setTransfer(types);
  target.addDropListener (new DropTargetAdapter() {
   public void drop(DropTargetEvent event) {
    if (event.data == null) {
     event.detail = DND.DROP_NONE;
     return;
    }
    label.setText ((String) event.data);
   }
  });
}

2、随意拖拽Tree子节炏V�?br />
public static void main (String [] args) {

  final Display display = new Display ();
  final Shell shell = new Shell (display);
  shell.setLayout(new FillLayout());
  //建立用于拖拽的树(w��i)
  final Tree tree = new Tree(shell, SWT.BORDER);
  for (int i = 0; i < 3; i++) {
   TreeItem item = new TreeItem(tree, SWT.NONE);
   item.setText("item "+i);
   for (int j = 0; j < 3; j++) {
    TreeItem subItem = new TreeItem(item, SWT.NONE);
    subItem.setText("item "+i+" "+j);
    for (int k = 0; k < 3; k++) {
     TreeItem subsubItem = new TreeItem(subItem, SWT.NONE);
     subsubItem.setText("item "+i+" "+j+" "+k);
    }
   }
  }

  Transfer[] types = new Transfer[] {TextTransfer.getInstance()};
  int operations = DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_LINK;

  //建立拖拽源————树(w��i)tree对象
  final DragSource source = new DragSource (tree, operations);
  source.setTransfer(types);
  final TreeItem[] dragSourceItem = new TreeItem[1];
  source.addDragListener (new DragSourceListener () {
   public void dragStart(DragSourceEvent event) {
    TreeItem[] selection = tree.getSelection(); // 获取所选tree的节�?br />    if (selection.length > 0 && selection[0].getItemCount() == 0) //判断所选节�Ҏ(gu��)��否存在�ƈ且�ؓ(f��)末端节点
    {
     event.doit = true; //启动拖拽功能
     dragSourceItem[0] = selection[0]; //保存拖拽节点信息
    } else {
     event.doit = false;
    }
   };
   public void dragSetData (DragSourceEvent event) {
    event.data = dragSourceItem[0].getText(); //保存拖拽节点信息��C��件数据中
   }
   public void dragFinished(DragSourceEvent event) {
    if (event.detail == DND.DROP_MOVE)
     dragSourceItem[0].dispose();
     dragSourceItem[0] = null;
   }
  });

  //建立拖拽目的————树(w��i)tree对象
  DropTarget target = new DropTarget(tree, operations);
  target.setTransfer(types);
  target.addDropListener (new DropTargetAdapter() {
   //处理拖拽到目的上�I�时的方�?br />   public void dragOver(DropTargetEvent event) {
    event.feedback = DND.FEEDBACK_EXPAND | DND.FEEDBACK_SCROLL; //响应拖拽动作�Q�FEEDBACK_EXPAND表示拖拽到可以展开的节�Ҏ(gu��)��展开相应节点�?br />    if (event.item != null) {
     TreeItem item = (TreeItem)event.item;
     //处理拖拽动作响应�Q�根据拖拽的位置不同产生不同的响�?br />     Point pt = display.map(null, tree, event.x, event.y); //获取拖拽当前位置�?br />     Rectangle bounds = item.getBounds(); //获取目的节点的边�?br />
     //�Ҏ(gu��)��拖拽当前位置点与目的节点的边框位�|�设�|�响应，如显�C�Zؓ(f��)FEEDBACK_INSERT_BEFORE、FEEDBACK_INSERT_AFTER
     if (pt.y < bounds.y + bounds.height/3) {
      event.feedback |= DND.FEEDBACK_INSERT_BEFORE;
     } else if (pt.y > bounds.y + 2*bounds.height/3) {
      event.feedback |= DND.FEEDBACK_INSERT_AFTER;
     } else {
      event.feedback |= DND.FEEDBACK_SELECT;
     }
    }
   }
   //处理放下时的�Ҏ(gu��)��
   public void drop(DropTargetEvent event) {
    if (event.data == null) {
     event.detail = DND.DROP_NONE;
     return;
    }
    String text = (String)event.data;
    //如果放下的位�|�没有节点，则新建立一个节点，以根节点为父节点
    if (event.item == null)
    {
     TreeItem item = new TreeItem(tree, SWT.NONE);
     item.setText(text);
    }
    //如果放下的位�|�有节点
    else
    {
     TreeItem item = (TreeItem)event.item;
     Point pt = display.map(null, tree, event.x, event.y);
     Rectangle bounds = item.getBounds();
     TreeItem parent = item.getParentItem();
     if (parent != null) {
      TreeItem[] items = parent.getItems();
      int index = 0;
      for (int i = 0; i < items.length; i++) {
       if (items[i] == item) {
        index = i;
        break;
       }
      }
      if (pt.y < bounds.y + bounds.height/3) {
       //以当前节点的父节点�ؓ(f��)父徏立一个子节点�Q��ƈ且插入到当前节点�?br />       TreeItem newItem = new TreeItem(parent, SWT.NONE, index);
       newItem.setText(text);
      } else if (pt.y > bounds.y + 2*bounds.height/3) {
       //以当前节点的父节点�ؓ(f��)父徏立一个子节点�Q��ƈ且插入到当前节点�?br />       TreeItem newItem = new TreeItem(parent, SWT.NONE, index+1);
       newItem.setText(text);
      } else {
       //以当前�ؓ(f��)父节点徏立一个子节点
       TreeItem newItem = new TreeItem(item, SWT.NONE);
       newItem.setText(text);
      }

     } else {
      TreeItem[] items = tree.getItems();
      int index = 0;
      for (int i = 0; i < items.length; i++) {
       if (items[i] == item) {
        index = i;
        break;
       }
      }
      if (pt.y < bounds.y + bounds.height/3) {
       TreeItem newItem = new TreeItem(tree, SWT.NONE, index);
       newItem.setText(text);
      } else if (pt.y > bounds.y + 2*bounds.height/3) {
       TreeItem newItem = new TreeItem(tree, SWT.NONE, index+1);
       newItem.setText(text);
      } else {
       TreeItem newItem = new TreeItem(item, SWT.NONE);
       newItem.setText(text);
      }
     }


    }
   }
  });

  shell.setSize (400, 400);
  shell.open ();
  while (!shell.isDisposed ()) {
   if (!display.readAndDispatch ()) display.sleep ();
  }
  display.dispose ();
}

哼哼 2006-11-07 18:05 发表评论

SWT Tool Tips实现�Q�Tool Tips �c�）

哼哼 — Tue, 07 Nov 2006 09:39:00 GMT

1、��用Shell�?a name="tooltips">Tool Tips 实现囑փ�内的Tool Tips �?br /> public static void main (String [] args) {
  Display display = new Display ();
  final Color [] colors = {
   display.getSystemColor (SWT.COLOR_RED),
   display.getSystemColor (SWT.COLOR_GREEN),
   display.getSystemColor (SWT.COLOR_BLUE),
  };
  final Rectangle [] rects = {
   new Rectangle (10, 10, 30, 30),
   new Rectangle (20, 45, 25, 35),
   new Rectangle (80, 80, 10, 10),
  };
  final Shell shell = new Shell (display);
  Listener mouseListener = new Listener () {
   public void handleEvent (Event event) {
    switch (event.type) {
     case SWT.MouseEnter:
     case SWT.MouseMove:
      for (int i=0; i       if (rects [i].contains (event.x, event.y)) {
        String text = "ToolTip " + i;
        if (!(text.equals (shell.getToolTipText ()))) {
         shell.setToolTipText ("ToolTip " + i);
        }
        return;
       }
      }
      shell.setToolTipText (null);
      break;
     }
   }
  };
  shell.addListener (SWT.MouseMove, mouseListener);
  shell.addListener (SWT.MouseEnter, mouseListener);
  shell.addListener (SWT.Paint, new Listener () {
   public void handleEvent (Event event) {
    GC gc = event.gc;
    for (int i=0; i     gc.setBackground (colors [i]);
     gc.fillRectangle (rects [i]);
     gc.drawRectangle (rects [i]);
    }
   }
  });
  shell.setSize (200, 200);
  shell.open ();
  while (!shell.isDisposed ()) {
   if (!display.readAndDispatch ()) display.sleep ();
  }
  display.dispose ();
}

2、��用Shell实现Tool Tip的功能�?br /> public static void main (String[] args) {
  final Display display = new Display ();
  final Shell shell = new Shell (display);
  shell.setLayout (new FillLayout ());
  final Table table = new Table (shell, SWT.BORDER);
  for (int i = 0; i < 20; i++) {
   TableItem item = new TableItem (table, SWT.NONE);
   item.setText ("item " + i);
  }
  // Disable native tooltip
  table.setToolTipText ("");

  // Implement a "fake" tooltip
  final Listener labelListener = new Listener () {
   public void handleEvent (Event event) {
    Label label = (Label)event.widget;
    Shell shell = label.getShell ();
    switch (event.type) {
     case SWT.MouseDown:
      Event e = new Event ();
      e.item = (TableItem) label.getData ("_TABLEITEM");
      // Assuming table is single select, set the selection as if
      // the mouse down event went through to the table
      table.setSelection (new TableItem [] {(TableItem) e.item});
      table.notifyListeners (SWT.Selection, e);
      shell.dispose ();
      table.setFocus();
      break;
     case SWT.MouseExit:
      shell.dispose ();
      break;
    }
   }
  };

  Listener tableListener = new Listener () {
   Shell tip = null;
   Label label = null;
   public void handleEvent (Event event) {
    switch (event.type) {
     case SWT.Dispose:
     case SWT.KeyDown:
     case SWT.MouseMove: {
      if (tip == null) break;
      tip.dispose ();
      tip = null;
      label = null;
      break;
     }
     case SWT.MouseHover: {
      TableItem item = table.getItem (new Point (event.x, event.y));
      if (item != null) {
       if (tip != null && !tip.isDisposed ()) tip.dispose ();
       //使用Shell实现Tool Tip的功�?br />       tip = new Shell (shell, SWT.ON_TOP | SWT.NO_FOCUS | SWT.TOOL);
       tip.setBackground (display.getSystemColor (SWT.COLOR_INFO_BACKGROUND));
       FillLayout layout = new FillLayout ();
       layout.marginWidth = 2;
       tip.setLayout (layout);
       label = new Label (tip, SWT.NONE);
       label.setForeground (display.getSystemColor (SWT.COLOR_INFO_FOREGROUND));
       label.setBackground (display.getSystemColor (SWT.COLOR_INFO_BACKGROUND));
       label.setData ("_TABLEITEM", item);
       label.setText (item.getText ());
       label.addListener (SWT.MouseExit, labelListener);
       label.addListener (SWT.MouseDown, labelListener);
       Point size = tip.computeSize (SWT.DEFAULT, SWT.DEFAULT);
       Rectangle rect = item.getBounds (0);
       Point pt = table.toDisplay (rect.x, rect.y);
       tip.setBounds (pt.x, pt.y, size.x, size.y);
       tip.setVisible (true);
      }
     }
    }
   }
  };
  table.addListener (SWT.Dispose, tableListener);
  table.addListener (SWT.KeyDown, tableListener);
  table.addListener (SWT.MouseMove, tableListener);
  table.addListener (SWT.MouseHover, tableListener);
  shell.pack ();
  shell.open();
  while (!shell.isDisposed()) {
   if (!display.readAndDispatch())
    display.sleep();
  }
  display.dispose();
}

哼哼 2006-11-07 17:39 发表评论

SWT Stack布局�Q�StackLayout �c�）

哼哼 — Tue, 07 Nov 2006 09:14:00 GMT

1、不同Componsit间的切换�?br /> static int pageNum = -1;

public static void main (String [] args) {
  Display display = new Display ();
  Shell shell = new Shell (display);
  shell.setBounds (10, 10, 300, 200);
  // create the composite that the pages will share
  final Composite contentPanel = new Composite (shell, SWT.BORDER);
  contentPanel.setBounds (100, 10, 190, 90);
  final StackLayout layout = new StackLayout ();
  contentPanel.setLayout (layout);

  // create the first page's content
  Composite page0;
  page0 = new Composite (contentPanel, SWT.NONE);
  page0.setLayout (new RowLayout ());
  Label label = new Label (page0, SWT.NONE);
  label.setText ("Label on page 1");
  label.pack ();

  // create the second page's content
  Composite page1;
  page1 = new Composite (contentPanel, SWT.NONE);
  page1.setLayout (new RowLayout ());
  Button button = new Button (page1, SWT.NONE);
  button.setText ("Button on page 2");
  button.pack ();

  // create the button that will switch between the pages
  Button pageButton = new Button (shell, SWT.PUSH);
  pageButton.setText ("Push");
  pageButton.setBounds (10, 10, 80, 25);
  pageButton.addListener (SWT.Selection, new Listener () {
   public void handleEvent (Event event) {
    pageNum = ++pageNum % 2;
    contentPanel.layout ();
   }
  });
  layout.topControl = page0;

  shell.open ();
  while (!shell.isDisposed ()) {
   if (!display.readAndDispatch ()) display.sleep ();
  }
  display.dispose ();
}

哼哼 2006-11-07 17:14 发表评论

SWT Swing/AWT �Q�Swing/AWT �c�）

哼哼 — Tue, 07 Nov 2006 09:09:00 GMT

Swing/AWT 主要是可以在SWT中��?a name="awt">Swing/AWT �Q�但是是有条件的�?br />
1、集成简单的AWT表和标签�?br /> static class FileTableModel extends AbstractTableModel {
  File[] files;
  String[] columnsName = {"Name", "Size", "Date Modified"};

  public FileTableModel (File[] files) {
   this.files = files;
  }
  public int getColumnCount () {
   return columnsName.length;
  }
  public Class getColumnClass (int col) {
   if (col == 1) return Long.class;
   if (col == 2) return Date.class;
   return String.class;
  }
  public int getRowCount () {
   return files == null ? 0 : files.length;
  }
  public Object getValueAt (int row, int col) {
   if (col == 0) return files[row].getName();
   if (col == 1) return new Long(files[row].length());
   if (col == 2) return new Date(files[row].lastModified());
   return "";
  }
  public String getColumnName (int col) {
   return columnsName[col];
  }
}

public static void main(String[] args) {
  final Display display = new Display();
  final Shell shell = new Shell(display);
  shell.setText("SWT and Swing/AWT Example");

  Listener exitListener = new Listener() {
   public void handleEvent(Event e) {
    MessageBox dialog = new MessageBox(shell, SWT.OK | SWT.CANCEL | SWT.ICON_QUESTION);
    dialog.setText("Question");
    dialog.setMessage("Exit?");
    if (e.type == SWT.Close) e.doit = false;
    if (dialog.open() != SWT.OK) return;
    shell.dispose();
   }
  };
  Listener aboutListener = new Listener() {
   public void handleEvent(Event e) {
    final Shell s = new Shell(shell, SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL);
    s.setText("About");
    GridLayout layout = new GridLayout(1, false);
    layout.verticalSpacing = 20;
    layout.marginHeight = layout.marginWidth = 10;
    s.setLayout(layout);
    Label label = new Label(s, SWT.NONE);
    label.setText("SWT and AWT Example.");
    Button button = new Button(s, SWT.PUSH);
    button.setText("OK");
    GridData data = new GridData();
    data.horizontalAlignment = GridData.CENTER;
    button.setLayoutData(data);
    button.addListener(SWT.Selection, new Listener() {
     public void handleEvent(Event event) {
      s.dispose();
     }
    });
    s.pack();
    Rectangle parentBounds = shell.getBounds();
    Rectangle bounds = s.getBounds();
    int x = parentBounds.x + (parentBounds.width - bounds.width) / 2;
    int y = parentBounds.y + (parentBounds.height - bounds.height) / 2;
    s.setLocation(x, y);
    s.open();
    while (!s.isDisposed()) {
     if (!display.readAndDispatch()) display.sleep();
    }
   }
  };
  shell.addListener(SWT.Close, exitListener);
  Menu mb = new Menu(shell, SWT.BAR);
  MenuItem fileItem = new MenuItem(mb, SWT.CASCADE);
  fileItem.setText("&File");
  Menu fileMenu = new Menu(shell, SWT.DROP_DOWN);
  fileItem.setMenu(fileMenu);
  MenuItem exitItem = new MenuItem(fileMenu, SWT.PUSH);
  exitItem.setText("&Exit\tCtrl+X");
  exitItem.setAccelerator(SWT.CONTROL + 'X');
  exitItem.addListener(SWT.Selection, exitListener);
  MenuItem aboutItem = new MenuItem(fileMenu, SWT.PUSH);
  aboutItem.setText("&About\tCtrl+A");
  aboutItem.setAccelerator(SWT.CONTROL + 'A');
  aboutItem.addListener(SWT.Selection, aboutListener);
  shell.setMenuBar(mb);

  RGB color = shell.getBackground().getRGB();
  Label separator1 = new Label(shell, SWT.SEPARATOR | SWT.HORIZONTAL);
  Label locationLb = new Label(shell, SWT.NONE);
  locationLb.setText("Location:");
  Composite locationComp = new Composite(shell, SWT.EMBEDDED);
  ToolBar toolBar = new ToolBar(shell, SWT.FLAT);
  ToolItem exitToolItem = new ToolItem(toolBar, SWT.PUSH);
  exitToolItem.setText("&Exit");
  exitToolItem.addListener(SWT.Selection, exitListener);
  ToolItem aboutToolItem = new ToolItem(toolBar, SWT.PUSH);
  aboutToolItem.setText("&About");
  aboutToolItem.addListener(SWT.Selection, aboutListener);
  Label separator2 = new Label(shell, SWT.SEPARATOR | SWT.HORIZONTAL);
  final Composite comp = new Composite(shell, SWT.NONE);
  final Tree fileTree = new Tree(comp, SWT.SINGLE | SWT.BORDER);
  Sash sash = new Sash(comp, SWT.VERTICAL);
  Composite tableComp = new Composite(comp, SWT.EMBEDDED); //Composite对象必须为SWT.EMBEDDED才可以装载awt/swing内容
  Label separator3 = new Label(shell, SWT.SEPARATOR | SWT.HORIZONTAL);
  Composite statusComp = new Composite(shell, SWT.EMBEDDED);

  java.awt.Frame locationFrame = SWT_AWT.new_Frame(locationComp);
  final java.awt.TextField locationText = new java.awt.TextField();
  locationFrame.add(locationText);

  //处理awt�?br />  java.awt.Frame fileTableFrame = SWT_AWT.new_Frame(tableComp);
  java.awt.Panel panel = new java.awt.Panel(new java.awt.BorderLayout());
  fileTableFrame.add(panel);
  final JTable fileTable = new JTable(new FileTableModel(null));
  fileTable.setDoubleBuffered(true);
  fileTable.setShowGrid(false);
  fileTable.createDefaultColumnsFromModel();
  JScrollPane scrollPane = new JScrollPane(fileTable);
  panel.add(scrollPane);

  //处理awt状态Label
  java.awt.Frame statusFrame = SWT_AWT.new_Frame(statusComp);
  statusFrame.setBackground(new java.awt.Color(color.red, color.green, color.blue));
  final java.awt.Label statusLabel = new java.awt.Label();
  statusFrame.add(statusLabel);
  statusLabel.setText("Select a file");

  sash.addListener(SWT.Selection, new Listener() {
   public void handleEvent(Event e) {
    if (e.detail == SWT.DRAG) return;
    GridData data = (GridData)fileTree.getLayoutData();
    Rectangle trim = fileTree.computeTrim(0, 0, 0, 0);
    data.widthHint = e.x - trim.width;
    comp.layout();
   }
  });

  File[] roots = File.listRoots();
  for (int i = 0; i < roots.length; i++) {
   File file = roots[i];
   TreeItem treeItem = new TreeItem(fileTree, SWT.NONE);
   treeItem.setText(file.getAbsolutePath());
   treeItem.setData(file);
   new TreeItem(treeItem, SWT.NONE);
  }
  fileTree.addListener(SWT.Expand, new Listener() {
   public void handleEvent(Event e) {
    TreeItem item = (TreeItem)e.item;
    if (item == null) return;
    if (item.getItemCount() == 1) {
     TreeItem firstItem = item.getItems()[0];
     if (firstItem.getData() != null) return;
     firstItem.dispose();
    } else {
     return;
    }
    File root = (File)item.getData();
    File[] files = root.listFiles();
    if (files == null) return;
    for (int i = 0; i < files.length; i++) {
     File file = files[i];
     if (file.isDirectory()) {
      TreeItem treeItem = new TreeItem(item, SWT.NONE);
      treeItem.setText(file.getName());
      treeItem.setData(file);
      new TreeItem(treeItem, SWT.NONE);
     }
    }
   }
  });
  fileTree.addListener(SWT.Selection, new Listener() {
   public void handleEvent(Event e) {
    TreeItem item = (TreeItem)e.item;
    if (item == null) return;
    final File root = (File)item.getData();
    EventQueue.invokeLater(new Runnable() {
     public void run() {
      statusLabel.setText(root.getAbsolutePath());
      locationText.setText(root.getAbsolutePath());
      fileTable.setModel(new FileTableModel(root.listFiles()));
     }
    });
   }
  });

  GridLayout layout = new GridLayout(4, false);
  layout.marginWidth = layout.marginHeight = 0;
  layout.horizontalSpacing = layout.verticalSpacing = 1;
  shell.setLayout(layout);
  GridData data;
  data = new GridData(GridData.FILL_HORIZONTAL);
  data.horizontalSpan = 4;
  separator1.setLayoutData(data);
  data = new GridData();
  data.horizontalSpan = 1;
  data.horizontalIndent = 10;
  locationLb.setLayoutData(data);
  data = new GridData(GridData.FILL_HORIZONTAL);
  data.horizontalSpan = 2;
  data.heightHint = locationText.getPreferredSize().height;
  locationComp.setLayoutData(data);
  data = new GridData(GridData.FILL_HORIZONTAL);
  data.horizontalSpan = 1;
  toolBar.setLayoutData(data);
  data = new GridData(GridData.FILL_HORIZONTAL);
  data.horizontalSpan = 4;
  separator2.setLayoutData(data);
  data = new GridData(GridData.FILL_BOTH);
  data.horizontalSpan = 4;
  comp.setLayoutData(data);
  data = new GridData(GridData.FILL_HORIZONTAL);
  data.horizontalSpan = 4;
  separator3.setLayoutData(data);
  data = new GridData(GridData.FILL_HORIZONTAL);
  data.horizontalSpan = 4;
  data.heightHint = statusLabel.getPreferredSize().height;
  statusComp.setLayoutData(data);

  layout = new GridLayout(3, false);
  layout.marginWidth = layout.marginHeight = 0;
  layout.horizontalSpacing = layout.verticalSpacing = 1;
  comp.setLayout(layout);
  data = new GridData(GridData.FILL_VERTICAL);
  data.widthHint = 200;
  fileTree.setLayoutData(data);
  data = new GridData(GridData.FILL_VERTICAL);
  sash.setLayoutData(data);
  data = new GridData(GridData.FILL_BOTH);
  tableComp.setLayoutData(data);

  shell.open();
  while(!shell.isDisposed()) {
   if (!display.readAndDispatch()) display.sleep();
  }
  display.dispose();
}

哼哼 2006-11-07 17:09 发表评论

SWT 目录对话框（DirectoryDialog�c�）

哼哼 — Tue, 07 Nov 2006 07:13:00 GMT

昄��一个简单的目录对话�?br />
public static void main (String [] args) {
  Display display = new Display ();
  Shell shell = new Shell (display);
  shell.open ();
  DirectoryDialog dialog = new DirectoryDialog (shell);
  dialog.setFilterPath ("c:\\"); //Windows specific
  System.out.println ("RESULT=" + dialog.open ());
  while (!shell.isDisposed()) {
   if (!display.readAndDispatch ()) display.sleep ();
  }
  display.dispose ();
}

哼哼 2006-11-07 15:13 发表评论

SWT 文�g对话框（F(tu��n)ileDialog�c�）

哼哼 — Tue, 07 Nov 2006 07:11:00 GMT

1、显�C�Z��个简单的保存对话框�?br /> public static void main (String [] args) {
  Display display = new Display ();
  Shell shell = new Shell (display);
  shell.open ();
  FileDialog dialog = new FileDialog (shell, SWT.SAVE);
  dialog.setFilterNames (new String [] {"Batch Files", "All Files (*.*)"});
  dialog.setFilterExtensions (new String [] {"*.bat", "*.*"}); //Windows wild cards
  dialog.setFilterPath ("c:\\"); //Windows path
  dialog.setFileName ("fred.bat");
  System.out.println ("Save to: " + dialog.open ()); //打开对话�?br />  while (!shell.isDisposed ()) {
   if (!display.readAndDispatch ()) display.sleep ();
  }
  display.dispose ();
}

哼哼 2006-11-07 15:11 发表评论

SWT �l�图�Q�GC�c�）

哼哼 — Tue, 07 Nov 2006 07:05:00 GMT

1、点击鼠标左键在shell里画�Uѝ�?br />
public static void main(String[] args)
{
  Display display = new Display();
  final Shell shell = new Shell(display);
  Listener listener = new Listener() {
   int lastX = 0, lastY = 0;

   public void handleEvent(Event event)
   {
    switch (event.type)
    {
     case SWT.MouseMove :
      if ((event.stateMask & SWT.BUTTON1) == 0)
       break; // 判断是否为鼠标左键，如果不是跛_��
      GC gc = new GC(shell);
      gc.drawLine(lastX, lastY, event.x, event.y);
      gc.dispose();
     // FALL THROUGH
     case SWT.MouseDown :
      lastX = event.x;
      lastY = event.y;
      break;
    }
   }
  };
  shell.addListener(SWT.MouseDown, listener);
  shell.addListener(SWT.MouseMove, listener);
  shell.open();
  while (!shell.isDisposed())
  {
   if (!display.readAndDispatch())
    display.sleep();
  }
  display.dispose();
}

2、在弹出�H�口中显�C��的当时图像状态�?br /> public static void main(String[] args) {
  final Display display = new Display();
  final Shell shell = new Shell(display);
  shell.setText("Widget");

  //建立一个简单的�?br />  final Table table = new Table(shell, SWT.MULTI);
  table.setLinesVisible(true);
  table.setBounds(10, 10, 100, 100);
  for (int i = 0; i < 9; i++) {
   new TableItem(table, SWT.NONE).setText("item" + i);
  }

  //建立捕捉囑փ�的按�?br />  Button button = new Button(shell, SWT.PUSH);
  button.setText("Capture");
  button.pack();
  button.setLocation(10, 140);


  button.addListener(SWT.Selection, new Listener() {
   public void handleEvent(Event event) {
    Point tableSize = table.getSize(); //获取表的大小
    GC gc = new GC(table); //建立表的GC对象
    final Image image =
     new Image(display, tableSize.x, tableSize.y); //建立表大��的囑փ�image
    gc.copyArea(image, 0, 0); //利用表的GC对象把表的图像复制到image�?br />    gc.dispose();

    //建立一个弹出面板Shell对象popup
    Shell popup = new Shell(shell);
    popup.setText("Image");
    popup.addListener(SWT.Close, new Listener() {
     public void handleEvent(Event e) {
      image.dispose();
     }
    });
    //在popup上徏立画布对象canvas
    Canvas canvas = new Canvas(popup, SWT.NONE);
    canvas.setBounds(10, 10, tableSize.x+10, tableSize.y+10);
    canvas.addPaintListener(new PaintListener() {
     public void paintControl(PaintEvent e) {
      e.gc.drawImage(image, 0, 0); //在画布上�l�出表的囑փ�image
     }
    });
    popup.pack();
    popup.open();
   }
  });
  shell.pack();
  shell.open();
  while (!shell.isDisposed()) {
   if (!display.readAndDispatch()) display.sleep();
  }
  display.dispose();
}

3、获取整个窗口的囑փ��q�显�C��?br /> public static void main(String[] args) {
  final Display display = new Display();
  final Shell shell = new Shell(display);
  shell.setLayout(new FillLayout());
  Button button = new Button(shell, SWT.PUSH);
  button.setText("Capture");
  button.addListener(SWT.Selection, new Listener() {
   public void handleEvent(Event event) {

    /* Take the screen shot */
    GC gc = new GC(display);
    final Image image = new Image(display, display.getBounds());
    gc.copyArea(image, 0, 0);
    gc.dispose();

    Shell popup = new Shell(shell, SWT.SHELL_TRIM);
    popup.setLayout(new FillLayout());
    popup.setText("Image");
    popup.setBounds(50, 50, 200, 200);
    popup.addListener(SWT.Close, new Listener() {
     public void handleEvent(Event e) {
      image.dispose();
     }
    });

    ScrolledComposite sc = new ScrolledComposite (popup, SWT.V_SCROLL | SWT.H_SCROLL);
    Canvas canvas = new Canvas(sc, SWT.NONE);
    sc.setContent(canvas);
    canvas.setBounds(display.getBounds ());
    canvas.addPaintListener(new PaintListener() {
     public void paintControl(PaintEvent e) {
      e.gc.drawImage(image, 0, 0);
     }
    });
    popup.open();
   }
  });
  shell.pack();
  shell.open();
  while (!shell.isDisposed()) {
   if (!display.readAndDispatch()) display.sleep();
  }
  display.dispose();
}

4、��用transform、alpha和paths混合技术绘图。注意：(x��)必须在项目中import“swt-gdip-win32-3139.dll”�?br /> public static void main(String[] args) {
  final Display display = new Display();
  final Shell shell = new Shell(display);
  shell.setText("Advanced Graphics");
  FontData fd = shell.getFont().getFontData()[0];
  final Font font = new Font(display, fd.getName(), 60, SWT.BOLD | SWT.ITALIC);
  final Image image = new Image(display, 640, 480);
  final Rectangle rect = image.getBounds();
  GC gc = new GC(image);
  gc.setBackground(display.getSystemColor(SWT.COLOR_RED));
  gc.fillOval(rect.x, rect.y, rect.width, rect.height);
  gc.dispose();
  shell.addListener(SWT.Paint, new Listener() {
   public void handleEvent(Event event) {
    GC gc = event.gc;
    Transform tr = new Transform(display);
    tr.translate(50, 120);
    tr.rotate(-30);
    gc.drawImage(image, 0, 0, rect.width, rect.height, 0, 0, rect.width / 2, rect.height / 2);
    gc.setAlpha(100);
    gc.setTransform(tr);
    Path path = new Path(display);
    path.addString("SWT", 0, 0, font);
    gc.setBackground(display.getSystemColor(SWT.COLOR_GREEN));
    gc.setForeground(display.getSystemColor(SWT.COLOR_BLUE));
    gc.fillPath(path);
    gc.drawPath(path);
    tr.dispose();
    path.dispose();
   }
  });
  shell.setSize(shell.computeSize(rect.width / 2, rect.height / 2));
  shell.open();
  while (!shell.isDisposed()) {
   if (!display.readAndDispatch())
    display.sleep();
  }
  image.dispose();
  font.dispose();
  display.dispose();
}

5、对囑փ��q�行旋�{�?br /> public static void main(String[] args) {
  final Display display = new Display();

  final Image image = new Image(display, 110, 60);
  GC gc = new GC(image);
  Font font = new Font(display, "Times", 30, SWT.BOLD);
  gc.setFont(font);
  gc.setBackground(display.getSystemColor(SWT.COLOR_RED));
  gc.fillRectangle(0, 0, 110, 60);
  gc.setForeground(display.getSystemColor(SWT.COLOR_WHITE));
  gc.drawText("SWT", 10, 10, true);
  font.dispose();
  gc.dispose();

  final Rectangle rect = image.getBounds();
  Shell shell = new Shell(display);
  shell.setText("Matrix Tranformations");
  shell.setLayout(new FillLayout());
  final Canvas canvas = new Canvas(shell, SWT.DOUBLE_BUFFERED);
  canvas.addPaintListener(new PaintListener () {
   public void paintControl(PaintEvent e) {
    GC gc = e.gc;
    gc.setAdvanced(true);
    if (!gc.getAdvanced()){
     gc.drawText("Advanced graphics not supported", 30, 30, true);
     return;
    }

    // Original image
    int x = 30, y = 30;
    gc.drawImage(image, x, y);
    x += rect.width + 30;

    Transform transform = new Transform(display);

    // Note that the tranform is applied to the whole GC therefore
    // the coordinates need to be adjusted too.

    // Reflect around the y axis.
    transform.setElements(-1, 0, 0, 1, 0 ,0);
    gc.setTransform(transform);
    gc.drawImage(image, -1*x-rect.width, y);

    x = 30; y += rect.height + 30;

    // Reflect around the x axis.
    transform.setElements(1, 0, 0, -1, 0, 0);
    gc.setTransform(transform);
    gc.drawImage(image, x, -1*y-rect.height);

    x += rect.width + 30;

    // Reflect around the x and y axes
    transform.setElements(-1, 0, 0, -1, 0, 0);
    gc.setTransform(transform);
    gc.drawImage(image, -1*x-rect.width, -1*y-rect.height);

    x = 30; y += rect.height + 30;

    // Shear in the x-direction
    transform.setElements(1, 0, -1, 1, 0, 0);
    gc.setTransform(transform);
    gc.drawImage(image, 300, y);

    // Shear in y-direction
    transform.setElements(1, -1, 0, 1, 0, 0);
    gc.setTransform(transform);
    gc.drawImage(image, 150, 475);

    // Rotate by 45 degrees
    float cos45 = (float)Math.cos(45);
    float sin45 = (float)Math.sin(45);
    transform.setElements(cos45, sin45, -sin45, cos45, 0, 0);
    gc.setTransform(transform);
    gc.drawImage(image, 350, 100);

    transform.dispose();
   }
  });

  shell.setSize(350, 550);
  shell.open();
  while (!shell.isDisposed()) {
   if (!display.readAndDispatch())
    display.sleep();
  }
  image.dispose();
  display.dispose();
}

哼哼 2006-11-07 15:05 发表评论

SWT �?w��i)（Tree�c�）

哼哼 — Thu, 02 Nov 2006 09:31:00 GMT

�?w��i)（Tree�c�）应用实例如下�Q?br />
1、简单树(w��i)
public static void main (String [] args) {
  Display display = new Display ();
  Shell shell = new Shell (display);
  shell.setLayout(new FillLayout());

  final Tree tree = new Tree (shell, SWT.BORDER);

  for (int i=0; i<4; i++) {
   TreeItem iItem = new TreeItem (tree, 0);
   iItem.setText ("TreeItem (0) -" + i);
   for (int j=0; j<4; j++) {
    TreeItem jItem = new TreeItem (iItem, 0);
    jItem.setText ("TreeItem (1) -" + j);
    for (int k=0; k<4; k++) {
     TreeItem kItem = new TreeItem (jItem, 0);
     kItem.setText ("TreeItem (2) -" + k);
     for (int l=0; l<4; l++) {
      TreeItem lItem = new TreeItem (kItem, 0);
      lItem.setText ("TreeItem (3) -" + l);
     }
    }
   }
  }
  shell.setSize (200, 200);
  shell.open ();
  while (!shell.isDisposed()) {
   if (!display.readAndDispatch ()) display.sleep ();
  }
  display.dispose ();
}

2、类��D��源管理器的树(w��i)�Q�其中包含鼠标双��M��?br /> public static void main (String [] args) {
  final Display display = new Display ();
  final Shell shell = new Shell (display);
  shell.setText ("Lazy Tree");
  shell.setLayout (new FillLayout ());

  final Tree tree = new Tree (shell, SWT.BORDER);
  File [] roots = File.listRoots ();
  for (int i=0; i   TreeItem root = new TreeItem (tree, 0);
   root.setText (roots [i].toString ());
   root.setData (roots [i]);//保存当前节点数据
   new TreeItem (root, 0);//把当前节点作为目录节�?br />  }

  tree.addListener (SWT.Expand, new Listener () {
   public void handleEvent (final Event event) {
    final TreeItem root = (TreeItem) event.item;
    TreeItem [] items = root.getItems ();
    for (int i= 0; i     if (items [i].getData () != null) return;
     items [i].dispose ();
    }
    File file = (File) root.getData ();
    File [] files = file.listFiles ();
    if (files == null) return;
    for (int i= 0; i     TreeItem item = new TreeItem (root, 0);
     item.setText (files [i].getName ());
     item.setData (files [i]);
     if (files [i].isDirectory()) {
      new TreeItem (item, 0);
     }
    }
   }
  });
    tree.addListener (SWT.MouseDoubleClick, new Listener () {
   public void handleEvent (Event event) {
    Point point = new Point (event.x, event.y);
    TreeItem item = tree.getItem (point);
    if (item != null) {
     System.out.println ("Mouse down: " + item);
    }
   }
  });
  //�Ҏ(gu��)��Tree的大��更改shell的大��?br />  Point size = tree.computeSize (300, SWT.DEFAULT);
  int width = Math.max (300, size.x);
  int height = Math.max (300, size.y);
  shell.setSize (shell.computeSize (width, height));
  shell.open ();
  while (!shell.isDisposed ()) {
   if (!display.readAndDispatch ()) display.sleep ();
  }
  display.dispose ();
}

哼哼 2006-11-02 17:31 发表评论

SWT 分割�H�（SashForm�c�）

哼哼 — Thu, 02 Nov 2006 07:47:00 GMT

分割�H�（SashForm�c�）实例如下�Q?br />
/*
* SashForm example snippet: create a sash form with three children
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.SashForm;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;

public class Snippet109 {

  public static void main(String[] args) {
    final Display display = new Display();
    Shell shell = new Shell(display);
    shell.setLayout(new FillLayout());

    SashForm form = new SashForm(shell, SWT.HORIZONTAL);
    form.setLayout(new FillLayout());

    Composite child1 = new Composite(form, SWT.NONE);
    child1.setLayout(new FillLayout());
    new Label(child1, SWT.NONE).setText("Label in pane 1");

    Composite child2 = new Composite(form, SWT.NONE);
    child2.setLayout(new FillLayout());
    new Button(child2, SWT.PUSH).setText("Button in pane2");

    Composite child3 = new Composite(form, SWT.NONE);
    child3.setLayout(new FillLayout());
    new Label(child3, SWT.PUSH).setText("Label in pane3");

    form.setWeights(new int[] { 30, 40, 30 });
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}

哼哼 2006-11-02 15:47 发表评论

哼哼 — Tue, 31 Oct 2006 02:36:00 GMT

摘要: 书写 swt �E�序的基本步骤如下：(x��)1. 创徏一个Display对象�?. 创徏一个或者多个Shell对象�Q�你可以认�ؓ(f��)Shell代表了程序的�H�口�?. 在Shell内创建各�U�部�Ӟ��widget�Q��?. 对各个部件进行初始化�Q�外观，状态等�Q�，同时为各�U�部件的事�g创徏监听器（listener�Q��?. 调用Shell对象的open()�?.. 阅读全文

哼哼 2006-10-31 10:36 发表评论

SWT概述

哼哼 — Mon, 30 Oct 2006 10:18:00 GMT

SWT/JFace 象一股清新的风吹入了 Java �?/span> GUI 开发领域，��个沉��L(f��ng)��领域带来了勃勃生机。虽�?/span> SUN 不接�U?/span> SWT/JFace 作�ؓ(f��) Java 中的一�U�图�?/span> API 标准�Q�但它虽然借着 Eclipse 的优异表玎ͼ�以不可阻挡之势向前发展着。终于可以用 SWT ��L��的开发出高效率的 GUI �E�序�Q�且拥有标准�?/span> Windows 外观�Q?/span> Eclipse 软�g��是��Z�� SWT/JFace 构徏的，大家看看 Eclipse3.0 ��q��?/span> SWT 有多么的��?br />
��Z��方便开�?span lang="EN-US">SWT�E�序�Q�在SWT基础上又创徏了一个更易用、功能强大的囑�Ş包�?/span>JFace”。然而，JFace�q�不能完全覆�?/span>SWT的所有功能，所以编�E�时SWT�?/span>JFace都会(x��)要用刎ͼ�但是一般来��_(d��)��能用JFace的组件就最好不要用SWT�?/font>�?br />
SWT中的�?/span>

SWT�?/span>Eclipse囑�ŞAPI的基��Q�本节将��单介�l�一�?/span>SWT中所包含的子包�?/span>

1�?/span>org.eclipse.swt.widgets

最常用的组件基本都在此包中�Q�如Button�?/span>Text�?/span>Label�?/span>Combo�{�。其中两个最重要的组件当�?/span>Shell�?/span>Composite�Q?/span>Shell相当于应用程序的�ȝ��口；Composite相当�?/span>SWING中的Panel对象�Q�是容纳�l��g的容器�?/span>

2�?/span>org.eclipse.swt.layout

主要的界面布局方式在此包中�?/span>SWT对组件的布局也采用了AWT/SWING中的Layout�?/span>Layout Data�l�合的方式�?/span>

3�?/span>org.eclipse.swt.custom

对一些基本图形组件的扩展在此包中�Q�比如其中的CLabel��是�Ҏ(gu��)��?/span>Label�l��g的扩展，�?/span>CLabel上可以同时加入文字和囄��。在此包中还有一个新的布局方式StackLayout�?/span>

4�?/span>org.eclipse.swt.event

SWT采用了和AWT/SWING一��L(f��ng)��事�g模型�Q�在包中可以扑ֈ�事�g监听�c�d��相应的事件对象。比如，鼠标事�g监听�?/font>MouseListener�Q?/span>MouseMoveListener�{�，�?qi��ng)对应的事�g对象MouseEvent�?/span>

5�?/span>org.eclipse.swt.graphics

此包中包含针对图片、光标、字体或�l�图API。比如，可通过Image�c�调用系�l�中不同�c�d��的图片文件�?/span>

6�?/span>org.eclipse.swt.ole.win32

对不同��^収ͼ�SWT有一些针�Ҏ(gu��)��的API。例如，�?/span>Windows�q�_��Q�可以通过此包很容易的调用OLE�l��g�Q�这使得SWT�E�序也可以内�?/span>IE��览器或Word�?/span>Excel�{�程序�?/span>

此外�q�有org.eclipse.swt.dnd�?/span>org.eclipse.swt.printing�?/span>org.eclipse.swt.program�?/span>org.eclipse.swt.accessibility�?/span>org.eclipse.swt.browser�?/span>org.eclipse.swt.awt�{�包�Q�在此不一一介绍了。这些包一般很��用刎ͼ�只需要稍微了解一下就行了�Q�不必深�I��?br />
�?/strong>SWT Designer

SWT Designer是优�U��?/span>SWT/JFace开发辅助工�?br />http://downloads.instantiations.com/Designer/release/v5.1.0_20060908125203/Designer_v5.1.0_win32_x86.exe
http://www.codefocus.cn/code/JAVA/SWT_Designer5.rar
codefocus.cn解压

SWT Designer�q�无法完成所有的界面设计工作�Q�所以在界面开发中依然是以手工写代码�ؓ(f��)主，而且手写代码某些时候比界面拖拉操作更快捗��以下是�W�者在使用SWT Designer开发界面时的基本流�E�：(x��)

l 新开一个��(f��)时的Application文�g�Q�用SWT Desiger快速做好开发所需要的部䆾界面�?/span>

l ��自动生成的代码�U�L��到正式项目中�Q�进行手工修改和代码�_��?/span>

另外�Q�由�?/span>SWT Designer不是很稳定，所以在使用时还应注意：(x��)

l 不要在界面中加入太多�l��g�?/span>

l 不要频繁的移动组�Ӟ��或者删除又��d��l��g�Q�否则很可能因�ؓ(f��)内存耗尽而死机�?/span>

哼哼 2006-10-30 18:18 发表评论

SWT的来源（转）

哼哼 — Mon, 30 Oct 2006 09:25:00 GMT
       要想弄清楚�ؓ(f��)什么一切都被弄得如此�؜乱，要从几年前只存在AWT的时候说赗��SUN当时已经建立了一套基本的可移植控件类�Q�这些类映射��C��同操作系�l�上的原生窗口组�Ӟ��native widget�Q�，昄��下一步应该��l�增��套模型，除了初始的CUA 92�l��g�Q�文字、按钮等�{�）�Q�再�l�箋加上表格、树(w��i)、记事本、滑块等�{�……当时的AWT�q�满是漏�z�，�q�不能称为可靠，�q�需要SUN的coder们去修补。SUN的developer们如Graham和Otto��L��?f��n)惯于公开把他们的bug归咎为操作系�l�的差异�Q�比如“Windows和OS/2的焦�Ҏ(gu��)��序不同”或者“在……之间Ctrl-X的行��Z��一样”，以及(qi��ng)其他苍白的托辞，好让批评的火力从SUN太早释出代码�q�个问题的真�怸��U�d��。然后Amy Fowler来到了SUN。不是我大男子主义，Amy是个聪明的美奻I��大多数呆头呆脑只懂技术的开发�h员都要被�Ҏ(gu��)��在手里�?br />
        Amy来自一家Smalltalk公司�Q�叫做Objectshare�Q�在那里她负责搞UI�c�d��。跟Java相比Smalltalk的历史有些�?zh��n)�惨，曑և�何时�?家庞大的Smalltalk公司——IBM、Parc-Place和Digitalk。在90�q�代初期3家公司的市场份额大致相等�Q�生�z�L��好的。Parc-Place采用仿窗口部�Ӟ��emulated widgets�Q�的设计�Q�即Swing的设计）�Q�IBM和Digitalk则采用原生窗口部�Ӟ��native widgets�Q�。后来IBM压倒了另外两家�Q�因此他们打��合�q�成一�Ӟ��假设叫做Parc-Place Digitalk。随后当他们试图��他们的产品融合��C��个叫做Jigsaw的计划中时爆发了一场大战，计划�׃��政治原因��p�|了（开发�h员实际上已经能让它运转�v来）�Q�就因�ؓ(f��)原生和仿造两�z��L��。Amy赢得了精��上的胜利，不过在IBM我们赢得了他们所有的生意�Q�因��两家公司在一整年里除了吵架什么都没做。当��埃落定之后PPD�Q�Parc-Place Digitalk当时已改名�ؓ(f��)Objectshare�Q�跟Windscale改名为Sellafield的原因相同——让��Z��淡忘之前发生的灾难）的股��h(hu��n)��g��60��元掉到了低�?��元1股。他们因��Z��报收入被NASDAQ摘牌�Q�从此消失。此时SUN正走上与PPD�c�M��的技术方向，于是PDD的技术�h员都把他们的��历投��C��SUN。Amy被雇佣了�Q�她承诺通过轻量�U�方案解��x��有窗口组件的问题�Q�因此说服SUN��理层让她当了GUI开发部门的头头。她是拿着“这里原来的人都搞砸了，我是来解决的”的钥匙�q�来的。随后Amy雇䄦了所有她�q�去在Parc-Place的旧朋友�Q�让他们来开发Swing�?br />
        昄��Swing应该做的是仅仅成��Z��个绘制框�Ӟ��l�那些希望创建地图��Y件或者绘图��Y件的��Z��使用�Q�无论如何，应该围绕AWT�c�d��来徏造它�Q�按钮之�cȝ��东西仍然交给AWT来管。SUN的�h比如Philip和Mark已经让AWT能够处理表格、树(w��i)和记事本�Q�notebook�Q�？�Q�，所以Swing的方向应该说很明显了。但那些毁了PDD的�h不干�Q�他们非要把一切都弄成轻量�U�的。由于SUN��理层的无知�Q�再加上Amy无情的政��L��D�，造成了我们今天所见的混�ؕ局面。Amy�q��SUN�怿�Swing是作为Mozilla��目的一部分与Netscape联合开发的�Q�事实上�q�只是她的宣传伎俩�?br />
        在IBM�Q�我们从�W�一天�v��憎恶Swing。庞大、满是错误，而且隄��x��。原先我们的工具如VisualAge for Java都是用Smalltalk�Q�用的是原生�H�口�l��g�Q�写的，所以当我们��这些工具向Java代码库迁�U�L��Q�我们需要一套窗口组件。IBM�q�边的开发�h员都是原来搞Smalltalk的那一批�h�Q�我们对��理层要求用Swing来构建WebSphere Studio工具都非�怸�情愿。Swing是个可怕的充满�~�陷的怪兽。在WebSphere Studio最初的预览中，当与Microsoft Visual Studio作对比演�C�的时候，我们所有的客户都讨厌它�Q�就因�ؓ(f��)它的外观�Q�而不��它的功能有多强。大多数消费者都不会(x��)��C��辆让��得难看的车，哪怕这车有一台出色的引擎。因此我们开始了一个项目，是把我们的Smalltalk原生�H�口�l��g�U�L��到Java上去。这个项目是加拿大的Object Technology International��组做的。这个项目获得了成功�Q�被�q�用在在我们发布的VisualAge Micro Edition产品中，VisualAge Micro Edition后来成�ؓ(f��)J2ME开发方面一个非常成功的IDE。但是OTI的�h发现�Q�Swing在读取Windows事�g斚w��有极严重的缺��P��我们甚至无法�q�行SWT�Q�S开始是Simple的羃写，不过后来变成了Standard的羃写）和Swing间的互操作。他们在��M��仉��列的时候用了一�U�可能留下内存漏�z�的方式�Q�所以我们不得不采用我们自己的查询Windows事�g队列的��@环，以纠正这个错误。我们试了一�ơ又一�ơ让SUN修复�q�个错误�Q�但Amy��是听不�q�去�Q�所以我们才军_��SWT和AWT/Swing不能共存。我们甚臛_��SWT中定义了自己的Point和Rectangle�c�Z��—整个工具包对AWT或Swing都没有�Q何依赖。我们把�q�个工具包放��C��Eclipse中，�q�是一个工具��^収ͼ�它的��M��设计目标��是要战胜Micrsoft和Visual Studio。Eclipse是开源的�Q�所以�Q何�h都可以在上面构徏自己的东西，我们已经有像TogetherSoft和Rational�q�样的公司移植到了上面。我们的竞争者是Microsoft�Q�所以我们所有努力和注意力都是从正面针对Microsoft�?br />
        不管怎么说SUN�Ҏ(gu��)��非常不满。他们的Netbeans跟Eclipse做的是相同的事，因此他们向IBM高层抱怨。他们认为SWT是要��你�l�到Windows上，�q�纯�_Ҏ(gu��)��胡说�Q�因为SWT能通过GTK在Mac/Linux上运行，以及(qi��ng)一大堆嵌入式��^台。他们拒�l�让Eclipse获得Java认证�Q�因为里面有原生代码�Q�所以Eclipse产品必须很小心地使用单词“Java”这个SUN的商标。Eclipse甚至不能把自��q��Z��个Java IDE�Q�SUN已经威胁�q�要采取法律行动来制止IBM在�Q何时候把Eclipse�U�C��一个Java IDE。结果之一��是IBM在Eclipse上创建的GUI设计工具�Q�允�怽�构徏Swing/AWT GUI�Q�却不让你往里面拖放SWT�H�口控�g�?br />
        ��SWT从Eclipse中分��d��来是完全可能的，只需要把DLL抠出来放到�\径中�Q��ƈ使用�H�口�l��g工具包来�l�你的银行或者保险或者其他什么应用程序开发GUI。再�ơ说明，我们无法更进一步，因�ؓ(f��)SUN把我们的双手�l�上了。虽然作为Eclipse开放源码协议的一部分�Q�CPL允许我们提供�q�样的解��x��案，但SUN已经很清楚地表明他们不希望我们这样做�?br />
        对于用户�C�֌�来说�Q�无论IBM和SUN的最�l�动机是什么，我发现有一�Ҏ(gu��)��L��很有��：(x��)喜爱Swing的�h��M��(x��)说“一旦你�׃��几年旉��L��握它�Q�你��p��正确��C��用它”，�q�基本上是他们在试图证明和维护他们辛苦得来的用途有限的专门技术；而SWT的拥护者们说的是“哇�Q�这真快�Q�这跟原生的一��P��q�可以用XP皮肤……它�q�又��d��”。有一句话是我喜欢的，我们的一个用戯��Q�Swing��像Java军_��不通过操作�pȝ��来实现原生的IO�Q�而是通过��头马达API自己来读��盘的扇区。Swing基本上就是这��L(f��ng)��Q�它拿着个底层的“paint(Graphics)”方法，自己来绘制所有的�H�口�l��g�?img src ="http://www.tkk7.com/hengheng123456789/aggbug/78098.html" width = "1" height = "1" />

哼哼 2006-10-30 17:25 发表评论