mask and alpha channel

[Guest Eugen]

Hi,I am creating an altimeter and it has two mask. I have based it on the 747 xml one. What I have found out is that I get a dark vertical line at the right side of my altimeter, and I have gone through all bitmaps looking for non 0-0-0 black . However my mask has no alpha channnel and I wonder could it be the lack of an alpha channel creating this black horisontal line? Do mask files always need an alpha channel?BrgdsEugen

[Guest]

>I have gone through all bitmaps looking for non 0-0-0 black >. However my mask has no alpha channnel and I wonder could >it be the lack of an alpha channel creating this black >horisontal line? Do mask files always need an alpha channel? Eugen, I have never used a bitmap with alpha channel in an XML gauge. In fact, all my bitmaps are stored as either 8 bit/channel indexed .bmp files, or 8 bit/pixel RGB .bmp files.

[Guest bartels]

I would check if there are bitmaps in the gauge that exceed the size of the first one and secondly check for other gauges in the vincinity if there are overlaps. These seem to be reasons for these black lines. And also 256-color bitmaps and higher colour bitmaps mixed in one gauge might also be the reason.Arne Bartels

[Guest Eugen]

Hi,Problem solved :-) I had true color bitmaps and they don't work as mask images obviously , when I reduced the number of colors it worked.Thanks!Eugen