> > > For once i haven't seen any resource that contains a 100x100 icon
For what it's worth, my experience with icon sizes is that hidpi combined with custom scaling makes icon nearly impossible to predict. Here's a real-world example of this problem: https://github.com/qzind/tray/pull/467#issuecomment-516671010 Although this issue doesn't specifically pertain to multi-resource icons (the comment is about the System Tray which doesn't support this feature yet) the use-case is nearly identical. Handling 100%, 125%, 200%, 300% zoom as screen pixels become more dense, any non-standard icon size becomes the standard, not the exception. So to apply this use-case to -- for example -- a multi-resource dialog icon -- a similar issue can and will occur where arbitrary icon sizes are demanded that may not exist at their expected/exact size. Some type of sane fallback is -- and will continue to be for the foreseeable future -- required for them to be drawn in highest quality. I hope this message is in-context and useful to the discussion.
