add folders with subfolders in Slideshow in 1 time

[AvHelvoort]

I miss one thing in the Slideshow, because I use it very much, and I use many pictures in many folders and the pictures in the different folders are not always the same (remove and add).

Is it possible in the next version to add an option so that you can add all the pictures in all subfolders too?

[AvHelvoort]

I do had found it in the new version of IrfanView v4.10.

[Bhikkhu Pesala]

I am glad you found it. I looked and couldn't see it at first, but it is there underneath the Help button. Another useful new feature.