Just want to create an icon set for DO. Simple question:
I use .ico and .png files (there're different). In an example xml I found all .png set to small and the .ico set to large.
How to create correct xml?
Also can I use the icon set for background images?
You can mix & match ico and png and/or large and small files in the same set. You don't have to do anything special for it to happen.
You can't use icon sets for background images.
Set is complete. One question:
Last question: I like to use 32x32 and 20x20 in one icon (I have now ico for large and png for small icons like in Vista2.0 Icon Set). What is the right xml code (row/col)?
The row/col stuff is for selecting icons out of a big PNG that has a grid of images. It isn't for selecting icon sizes out of .ico files. That's either done automatically or it's not possible (not sure which; give it a try using the same .ico file for both sizes and see what happens).
Doesn't work 
Where do I store background images? I have the problem that they are not shown when using USB-version of DO.
Store your images in the Images under GPSoftware/DOpus folder in your Program Files.
The you'll have to edit the images.oxc in ConfigFiles folder to reduce the complete path stored to the relative path starting from DOpus root folder.
So, instead of C:/ProgramFiles/GPSoftware/DOpus/Images/Image.jpg
you can put this: Images/Image.jpg
Hope this helps! It works for me (just one more information, i'm not using U3 package of portable DOpus)
I created my Icon Sets using .png for small icons and .ico for large icons. It's easier to change some icons when you have individual .ico's and .png's.
When you add all the icons to one big .png with a grid of images, you have to rebuild the .png when you change some of the icons.
To create the right XML code:
quote="GPSoftware Icon Set Specification" say you have a collection of single image icons that you wish to bundle together as an icon set. You would simply specify
multiple set nodes, one for each image file, and each set node would contain a single icon node referring to row 1, column 1. (...)[/quote]
Directory Opus 9 Icon Set Format Specifications (PDF format):
http://www.gpsoft.com.au/DScripts/download.asp
Thanks for all help.
My set includes now ico and png.