Source Code : Styled Text with highlighted Odd Line

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Styled Text with highlighted Odd Line

/******************************************************************************
 * All Right Reserved. 
 * Copyright (c) 1998, 2004 Jackwind Li Guojie
 * 
 * Created on Feb 22, 2004 1:29:05 AM by JACK
 * $Id$
 * 
 *****************************************************************************/
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.LineBackgroundEvent;
import org.eclipse.swt.custom.LineBackgroundListener;
import org.eclipse.swt.custom.StyledText;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class HighlightOddLine {
  Display display = new Display();
  Shell shell = new Shell(display);
  
  StyledText styledText;
  
  public HighlightOddLine() {
    shell.setLayout(new GridLayout());
    
    styledText = new StyledText(shell, SWT.MULTI | SWT.WRAP | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
    styledText.setLayoutData(new GridData(GridData.FILL_BOTH));
    
    styledText.addLineBackgroundListener(new LineBackgroundListener() {
      public void lineGetBackground(LineBackgroundEvent event) {
        if(styledText.getLineAtOffset(event.lineOffset) % 2 == 1)
          event.lineBackground = shell.getDisplay().getSystemColor(SWT.COLOR_YELLOW);
      }
    });
    
    styledText.setText("Line 0
Line 1
Line 2
Line 3
Line 4
Line 5
Line 6");

    shell.setSize(300, 150);
    shell.open();
    //textUser.forceFocus();

    // Set up the event loop.
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        // If no more entries in event queue
        display.sleep();
      }
    }

    display.dispose();
  }

  private void init() {

  }

  public static void main(String[] args) {
    new HighlightOddLine();
  }
}



           
       

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