Vista - RealWorld forums
Vista
on July 16th 2006
Hy
When i create a vista icon (256x256) and save it with compression, windows vista will show the big icon just for a second, and then it changes to the small 48x48 icon automaticly.
When i create an icon (256x256) whith another icon editor, and save it as normal icon, the big pic will be shown on vista.
Do you know about this problem?
Andy
on July 16th 2006
Vista is still in beta and handling of compressed icons in Windows Explorer was different in each major Vista build.
In Beta 2, compressed icons are working correctly when they are compiled in applications or when folder icons are customized. As you have seen, the thumbnail extractor for standalone icon files is currently ignoring the compressed formats.
It is likely, that Microsoft will enhance the thumbnail extractor in the final Vista version (-> ask them 
).
Right now, it is your choice whether you use compression or not. You can always change you mind later, the compression is lossless.
V.