displaythread.java

来自「用java写的一个浏览器」· Java 代码 · 共 40 行

package deamo;

import org.eclipse.swt.widgets.Display;

public class DisplayThread extends Thread {
	 private Display display;
	 Object sem=new Object();
	 
	 public void run() {
	  synchronized (sem){
	   display = Display.getDefault();
	   sem.notifyAll();
	  }
	  swtEventLoop();
	 }
	 
	 private void swtEventLoop() {
	  while( true ) {
	   if (!display.readAndDispatch()) {
	    display.sleep();
	   }
	  }
	 }
	 
	 public Display getDisplay() {
	  try{
	  synchronized (sem){
	   while(display==null)
	    sem.wait();
	   return display;
	  }
	  }
	  catch(Exception e){
	   return null;
	  }
	 }

	}