Java Development

[mohunt]

I am trying to create a transparent box in the center of my camera video screen to assist in aiming. 

I have tried overriding the paint subroutine to create the box as in the code below; however, it is not working.

public void  paint(Graphics g)
	{
		super.paint(g);
		Bitmap bmpAimer = new Bitmap(50, 50);
		g.drawBitmap(0, 0, bmpAimer.getWidth(), bmpAimer.getHeight(), bmpAimer, 100, 150);
	}

[mohunt]

I changed my code to use a transparent image and use the AbsoulteFieldManager's paint method to display the image, however, it is still overlaid by the video field.

AbsoluteFieldManager _afm;
	static EncodedImage bmpAimer  = EncodedImage.getEncodedImageResource("target.png");

  _afm = new AbsoluteFieldManager() {
	            //Override the paint method to draw the target image.
	    	       	public void paint(Graphics graphics) {
	    	       	super.paint(graphics);
	         		graphics.drawImage(
	         				Display.getWidth() / 2 - bmpAimer.getWidth() / 2, Display.getHeight() / 2 - bmpAimer.getHeight() / 2, 
	         			    bmpAimer.getWidth(),  bmpAimer.getHeight(), 
	         			    bmpAimer, 0, 0, 0
	         			);
	    	       	}
	         };

   if(_videoField != null)
                {
                	_afm.add(_videoField);
                	add(_afm);
                    this.addKeyListener(new MyKeyListener());
                }

Any help would be appreciated.

[MSohm · Accepted solution]

You need to use ComponentCanvas to draw on top of video.  The nativewindowmanagerdemo included with the version 7.0 and higher BlackBerry Java SDK demonstrates how to do this.

[mohunt]

Thanks for pointing me in the right direction.