Source Code : Set icons with different resolutions

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Set icons with different resolutions

/*
 * example snippet: set icons with different resolutions
 *
 * For a list of all SWT example snippets see
 * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class Snippet138 {
  public static void main(String[] args) {
    Display display = new Display();

    Image small = new Image(display, 16, 16);
    GC gc = new GC(small);
    gc.setBackground(display.getSystemColor(SWT.COLOR_RED));
    gc.fillArc(0, 0, 16, 16, 45, 270);
    gc.dispose();

    Image large = new Image(display, 32, 32);
    gc = new GC(large);
    gc.setBackground(display.getSystemColor(SWT.COLOR_RED));
    gc.fillArc(0, 0, 32, 32, 45, 270);
    gc.dispose();

    /*
     * Provide different resolutions for icons to get high quality rendering
     * wherever the OS needs large icons. For example, the ALT+TAB window on
     * certain systems uses a larger icon.
     */
    Shell shell = new Shell(display);
    shell.setText("Small and Large icons");
    shell.setImages(new Image[] { small, large });

    /*
     * No large icon: the OS will scale up the small icon when it needs a
     * large one.
     */
    Shell shell2 = new Shell(display);
    shell2.setText("Small icon");
    shell2.setImage(small);

    shell.open();
    shell2.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}
           
       

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