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();
}
});
}
}

本文介绍了使用SWT创建简单的GUI应用的方法,并通过一个HelloWorld实例进行演示。此外,还展示了如何利用Eclipse RCP创建更为复杂的应用程序。
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