SWT(JFace)体验之RowLayout布局

package swt_jface.demo2;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.RowData;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.List;
import org.eclipse.swt.widgets.Shell;
public class RowLayoutSample {

Display display = new Display();
Shell shell = new Shell(display);
public RowLayoutSample() {

RowLayout rowLayout = new RowLayout();
// rowLayout.fill = true;
// rowLayout.justify = true;
// rowLayout.pack = false;
// rowLayout.type = SWT.VERTICAL;
// rowLayout.wrap = false;
shell.setLayout(rowLayout);

Button button1 = new Button(shell, SWT.PUSH);
button1.setText("button1");
button1.setLayoutData(new RowData(100, 35));

List list = new List(shell, SWT.BORDER);
list.add("item 1");
list.add("item 2");
list.add("item 3");

Button button2 = new Button(shell, SWT.PUSH);
button2.setText("button #2");

//shell.setSize(120, 120);
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
public static void main(String[] args) {
new RowLayoutSample();
}
}

package swt_jface.demo2;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.events.ControlListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class Layouting {
Display display = new Display();
Shell shell = new Shell(display);
int count = 0;
public Layouting() {
shell.setLayout(new RowLayout());

final Composite composite = new Composite(shell, SWT.BORDER);
composite.setLayout(new RowLayout());
composite.setBackground(display.getSystemColor(SWT.COLOR_YELLOW));
composite.addControlListener(new ControlListener() {
public void controlMoved(ControlEvent e) {
}
public void controlResized(ControlEvent e) {
System.out.println("Composite resize.");
}
});

Button buttonAdd = new Button(shell, SWT.PUSH);
buttonAdd.setText("Add new button");
buttonAdd.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {
Button button = new Button(composite, SWT.PUSH);
button.setText("Button #" + (count++));
composite.layout(true);
composite.pack();
shell.layout(true);
shell.pack(true);
}
});

shell.pack();
//shell.setSize(450, 100);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
public static void main(String[] args) {
new Layouting();
}
}