public void paint(GC gc, int width, int height) {
		if (!example.checkAdvancedGraphics()) return;
		Device device = gc.getDevice();

		if (alphaImg1 == null) {
			alphaImg1 = GraphicsExample.loadImage(device, GraphicsExample.class, "alpha_img1.png");
			alphaImg2 = GraphicsExample.loadImage(device, GraphicsExample.class, "alpha_img2.png");	
		}

		Rectangle rect = alphaImg1.getBounds();
		
		gc.setAlpha(alphaValue);
		gc.drawImage(alphaImg1, rect.x, rect.y, rect.width, rect.height, 
				width/2, height/2, width/4, height/4);
		
		gc.drawImage(alphaImg1, rect.x, rect.y, rect.width, rect.height, 
				0, 0, width/4, height/4);

		gc.setAlpha(255-alphaValue);
		gc.drawImage(alphaImg2, rect.x, rect.y, rect.width, rect.height, 
				width/2, 0, width/4, height/4);
		
		gc.drawImage(alphaImg2, rect.x, rect.y, rect.width, rect.height, 
				0, 3*height/4, width/4, height/4);
		
		// pentagon
		gc.setBackground(device.getSystemColor(SWT.COLOR_DARK_MAGENTA));
		gc.fillPolygon(new int [] {width/10, height/2, 3*width/10, height/2-width/6, 5*width/10, height/2, 
				4*width/10, height/2+width/6, 2*width/10, height/2+width/6});

		gc.setBackground(device.getSystemColor(SWT.COLOR_RED));

		// square
		gc.setAlpha(alphaValue);
		gc.fillRectangle(width/2, height-75, 75, 75);
		
		// triangle
		gc.setAlpha(alphaValue + 15);
		gc.fillPolygon(new int[]{width/2+75, height-(2*75), width/2+75, height-75, width/2+(2*75), height-75});
		
		// triangle
		gc.setAlpha(alphaValue + 30);
		gc.fillPolygon(new int[]{width/2+80, height-(2*75), width/2+(2*75), height-(2*75), width/2+(2*75), height-80});
		
		// triangle
		gc.setAlpha(alphaValue + 45);
		gc.fillPolygon(new int[]{width/2+(2*75), height-(2*75), width/2+(3*75), height-(2*75), width/2+(3*75), height-(3*75)});
		
		// triangle
		gc.setAlpha(alphaValue + 60);
		gc.fillPolygon(new int[]{width/2+(2*75), height-((2*75)+5), width/2+(2*75), height-(3*75), width/2+((3*75)-5), height-(3*75)});
		
		// square
		gc.setAlpha(alphaValue + 75);
		gc.fillRectangle(width/2+(3*75), height-(4*75), 75, 75);
		
		gc.setBackground(device.getSystemColor(SWT.COLOR_GREEN));
		
		// circle in top right corner
		gc.setAlpha(alphaValue2);
		gc.fillOval(width-100, 0, 100, 100);
		
		// triangle
		gc.setAlpha(alphaValue + 90);
		gc.fillPolygon(new int[]{width-300, 10, width-100, 10, width-275, 50});
	
		// triangle
		gc.setAlpha(alphaValue + 105);
		gc.fillPolygon(new int[]{width-10, 100, width-10, 300, width-50, 275});
		
		// quadrilateral shape
		gc.setAlpha(alphaValue + 120);
		gc.fillPolygon(new int[]{width-100, 100, width-200, 150, width-200, 200, width-150, 200});
		
		// blue circles
		gc.setBackground(device.getSystemColor(SWT.COLOR_BLUE));
		int size = 50;
		int alpha = 20;
		for (int i = 0; i < 10; i++) {
			gc.setAlpha(alphaValue + alpha);
			if (i % 2 > 0) {
				gc.fillOval(width-((i+1)*size), height-size, size, size);
			} else {
				gc.fillOval(width-((i+1)*size), height-(3*size/2), size, size);
			}
			alpha = alpha + 20;
		}
		
		// SWT string appearing randomly
		gc.setAlpha(alphaValue2);
		String text = GraphicsExample.getResourceString("SWT");
		Font font = createFont(device, 100, SWT.NONE);
		gc.setFont(font);
		
		Point textSize = gc.stringExtent(text);
		int textWidth = textSize.x;
		int textHeight = textSize.y;
		
		if (alphaValue2 == 0){
			randX = (int)(width*Math.random());
			randY = (int)(height*Math.random());
			randX = (randX > textWidth) ? randX - textWidth : randX;
			randY = (randY > textHeight) ? randY - textHeight : randY;
		}
		
		gc.drawString(text, randX, randY, true);
		font.dispose();
		
		// gray donut
		gc.setAlpha(100);
		Path path = new Path(device);
		path.addArc((width-diameter)/2, (height-diameter)/2, diameter, diameter, 0, 360);
		path.close();
		path.addArc((width-diameter+25)/2, (height-diameter+25)/2, diameter-25, diameter-25, 0, 360);
		path.close();
		gc.setBackground(device.getSystemColor(SWT.COLOR_GRAY));
		gc.fillPath(path);
		gc.drawPath(path);
		path.dispose();
	}