[news.eclipse.platform.swt] Image with SWT.IMAGE_GRAY style

[kkconcome@xxxxxxxxx (Connie)]

Hi,

Given an image, I want to be able to do the following:
1. Display the image with transparent background (RGB(0, 255, 255) in my 
case).
2. Display the image as being grayed-out and, at the same time, have 
transparent background.

I'm able to do this on a GIF and 16 color BMP using the following code:

InputStream inputStream = 
   test.getClass().getResourceAsStream("..\\..\\icons\\img.bmp");
ImageData imgData = new ImageData(inputStream);
imgData.transparentPixel = imgData.palette.getPixel(new RGB(0, 255, 255));
final Image image = new Image(display, imgData);
final Image disabledImage = new Image(display, image, SWT.IMAGE_GRAY);

shell.addPaintListener(new PaintListener() {
           public void paintControl(PaintEvent event) {
               GC gc = event.gc;
               gc.drawImage(image, 0, 0);
               gc.drawImage(disabledImage, 50, 0);
           }
       });

However, I can only get #1 working when I tried the same code on a 24-bit 
BMP.
(the 24-bit BMP has the same background color RGB(0, 255, 255) as the 
previous
2 images). The grayed-out image does not have a transparent background - 
it 
has a light gray background instead.

Is this a bug? Is there a solution/workaround for me to fix the problem? 

Thanks for your help!
Connie