SWT HelloWorkd

 

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;

public class HelloWorld {
	public static void main(String[] args) {
		Display display = new Display();
		Shell shell = new Shell(display);
		shell.setLayout(new GridLayout());
		
		/*******************************************/
		Label label = new Label(shell, SWT.NONE);
		label.setText("test");
		
		/*******************************************/
		shell.open();
		while (!shell.isDisposed()) {
			if (!display.readAndDispatch())
				display.sleep();
		}
		display.dispose();
	}

}

 

 

SWT是eclipse RCP的基础。通过RCP新建向导建立plugin project可以看到Application其实就是一个类似HelloWorld的功能。

 

import org.eclipse.equinox.app.IApplication;
import org.eclipse.equinox.app.IApplicationContext;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.PlatformUI;

/**
 * This class controls all aspects of the application's execution
 */
public class Application implements IApplication {

	public Object start(IApplicationContext context) throws Exception {
		Display display = PlatformUI.createDisplay();
		try {
			int returnCode = PlatformUI.createAndRunWorkbench(display,
					new ApplicationWorkbenchAdvisor());
			if (returnCode == PlatformUI.RETURN_RESTART)
				return IApplication.EXIT_RESTART;
			else
				return IApplication.EXIT_OK;
		} finally {
			display.dispose();
		}

	}

	public void stop() {
		if (!PlatformUI.isWorkbenchRunning())
			return;
		final IWorkbench workbench = PlatformUI.getWorkbench();
		final Display display = workbench.getDisplay();
		display.syncExec(new Runnable() {
			public void run() {
				if (!display.isDisposed())
					workbench.close();
			}
		});
	}
}