If you want to edit .MSSTYLES or another DLL or ressources files (to make new skin/style for Windows XP or another application that use 32bpp bitmaps), you will probably see that a great amount of images the windows's skins are using are 32bits-bitmaps. And when you open these bitmaps on almost all applications, the alpha chanel is dropped due to the non-support of this sort of BMP in Windows Bitmap Loading API (for win 3.1 / win 95 historical reasons).
Paint.NET doesn't escape from the rule and load/save bitmaps as they were in 24bpp.
This plugin allow you to open and save file in 32-bit bitmap.
The only thing you must do is to rename it to *.bmpx (to avoid conflit with the existing PDN's BMP handler).
If you try to open non-BMP files, you should receive an error (rem: 24bpp bitmaps are loaded correcty too).
This plugin is perfectible and I'll publish updates if you find bugs/things to change.
Changelog [2.6 <== 1.xx] :
- Application optimised
- Fixed a problem of 1px translation on Windows
- Support now all bitmaps (and not only 32bpp)
Moderators Note: Find the latest version of this plugin here http://forums.getpai...et/#entry308033 (post #7 in this thread)