Blast from the past
Wow, look what I just found on an old source-disk. A mini paint program I wrote in Delphi (something) ages ago. It’s all one single component, fully ownerdrawn (notice the scrollbars are not exactly modern) and supports both layers, brushes and undo. Sort of a “bare bone” paint program. I never got around adding filters to it, but you can draw with different effects though. It could be fun to raise it from the dead and give it the pixelrage overhaul.