osu!ui skinner

osu!ui skinner is basically a more complex version of my osu!BackgroundChanger project. It allows you to extract your osu!ui.dll file into folders containing all the resources in it, and can compile them back into a working osu!ui.dll after you made the changes you desire. It is incompatible with other resource DLL's (such as osu!gameplay) to prevent users from getting themselves banned.

F.A.Q.

How do I use it?

1. Drag an osu!ui.dll on the program and wait for it to do its magic. A new folder called extracted will be created next to the dll files containing 2 other folders: Original and Changes.
2. Copy anything you wish to change from the Original to the Changes folder and edit whatever your heart desires. Make sure you keep the same path used in the Original folder. Do not edit anything in the Original folder itself! This folder should contain the original files for the program to use as reference.
3. Drag the extracted folder (which contains Original and Changes and drag it on top of the program. It will create a new file called osu!ui-rebuilt.dll which is now modded with your custom resources.

Help, nothing changed!

Make sure that you replaced the osu!ui.dll in your osu! folder with the one you created. Also check that you actually replaced/edited a file and that they have the same file format. For example: changing a .png file with a .jpeg may not work.

If nothing helped, your file may have been overwritten by the osu! updater. If so, check Help, osu! overwrite my DLL!

Help, osu! overwrites my DLL!

Place your osu!ui.dll in your osu! folder again and delete osu!.cfg (not the one containing your windows username!). This will make osu! forget about the old osu!ui.dll.

Help, I cannot see any osu!ui.dll files in my osu! folder!

Make sure you can view hidden files. Google will tell you how.

But how does it work?

I'm glad you ask! osu!ui skinner uses a library called dnlib to read the osu!ui file you provide it, reads all resources contained in it and uses some logic to try and determine what file type it originally was. Then it divides it up into categories such as Shaders, Images, Audio, etc. and writes them to disk with their original file extension. When you give it an "extracted" folder, it will read through all the categories in the "Original" folder, check if a modified version exists in the "Changes" folder and write them to a new list of resources. It then generates a new DLL file, recreates the code from an original osu!ui.dll from scratch and embeds the resources.