import java.util.List;
import java.util.*;

import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.program.*;
import org.eclipse.swt.widgets.*;

public class ProgramImageTest {

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

		final List<Image> images = createImages(display, "zip", "pdf", "png", "jpg", "msi", "txt", "theme");

		final Shell shell = new Shell(display);

		shell.addListener(SWT.Paint, event -> {
			int x = 0;
			for (Image image : images) {
				event.gc.drawImage(image, x, 0);
				x += image.getImageData().width;
				x += 10;
			}
		});

		shell.setSize(400, 300);
		shell.open();

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

		for (Image image : images) {
			image.dispose();
		}

		display.dispose();
	}

	private static List<Image> createImages(Display display, String... extensions) {
		final List<Image> images = new ArrayList<>();
		for (String extension : extensions) {
			final Program program = Program.findProgram(extension);
			if (program == null) {
				continue;
			}

			final ImageData data = program.getImageData();
			if (data == null) {
				continue;
			}

			images.add(new Image(display, data));
		}
		return images;
	}
}