Transparency with *png in MHP with DVBAlphaComposite-what's the problem?

Question

Hello!
I know this topic exists already, but it could not help me with my problem:
I want an HIcon with an transparent picture in it but I am not able to get any transparency..To me that code seems to be right,
but when testing it with the IRT RI, the Graphic is opaque..
Does anybody see what i am missing?
public void startXlet() throws XletStateChangeException {
MediaTracker tracker = new MediaTracker(this);
picture = Toolkit.getDefaultToolkit().getImage("AlphaGrafik.png");
tracker.addImage(bild, 0);
try{
tracker.waitForAll();
catch(InterruptedException e) {
picture = null;
cont = new HContainer(0, 0, 720 , 576);
icon1 = new HStaticIcon(picture, 0, 0, 720, 576);
cont.add(icon1);
scene.add(cont);
scene.setVisible(true);
icon1.requestFocus();
public void alpha(Graphics g){
DVBAlphaComposite compositeRule = DVBAlphaComposite.getInstance(DVBAlphaComposite.SRC_OVER, (float)0.5);
DVBGraphics image = (DVBGraphics)g;
try {
image.setDVBComposite(compositeRule);
catch (org.dvb.ui.UnsupportedDrawingOperationException ex) {
System.out.println("Exception: " + ex);
image.drawImage(picture,0,0,null);
Any help is very useful for me!
Regards, Alex.

Answer 1

I have simular problem applying alpha composing to Graphic layers.
If I draw graphic elements like circle or rectangular with some color or draw images with transparency (Alpha) then I can see only background IFame under top element. It seams when I draw something on graphic layer then middleware compose background video layer and DVB colors of element that I am drawing at the moment. Colors of elements that placed under the top element are ignored. I tried verious composing rules but It does not give any correct result. It seams middleware does not suppot alpha composing at this moment. Did you get some exception applying alpha composing?
I use Alticast MHP middleware installed on my Humax STB