drawtext.java

自己建立的项目

package com.swtSample.graphics;

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;

/**
 * This class demonstrates how to draw text
 */
public class DrawText {
  // The string to draw
  private static final String HELLO = "Hello,\n&World!\tFrom SWT";

  /**
   * Runs the application
   */
  public void run() {
    Display display = new Display();
    final Shell shell = new Shell(display);

    // Load an image to use as the background
    final Image image = new Image(display, this.getClass().getResourceAsStream(
        "/images/square.gif"));

    shell.addPaintListener(new PaintListener() {
      public void paintControl(PaintEvent event) {
        // Stretch the image to fill the window
        Rectangle rect = shell.getClientArea();
        event.gc.drawImage(image, 0, 0, image.getImageData().width, image
            .getImageData().height, 0, 0, rect.width, rect.height);

        // This will draw the string on one line, with non-printing characters
        // for \n and \t, with an ampersand, and with an opaque background
        event.gc.drawString(HELLO, 5, 0);

        // This will draw the string on one line, with non-printing characters
        // for \n and \t, with an ampersand, and with a transparent background
        event.gc.drawString(HELLO, 5, 40, true);

        // This will draw the string on two lines, with a tab between World! and
        // From, with an ampersand, and with an opaque background
        event.gc.drawText(HELLO, 5, 80);

        // This will draw the string on two lines, with a tab between World! and
        // From, with an ampersand, and with a transparent background
        event.gc.drawText(HELLO, 5, 120, true);

        // This will draw the string on two lines, with a tab between World! and
        // From, with the W underlined, and with a transparent background
        event.gc.drawText(HELLO, 5, 160, SWT.DRAW_MNEMONIC | SWT.DRAW_DELIMITER
            | SWT.DRAW_TAB | SWT.DRAW_TRANSPARENT);
      }
    });
    shell.setText("Draw Text");
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    image.dispose();
    display.dispose();
  }

  /**
   * The application entry point
   * 
   * @param args the command line arguments
   */
  public static void main(String[] args) {
    new DrawText().run();
  }
}