This screenshot either does not contain copyright-eligible parts/visuals of copyrighted software, or the——author has released it under a free license (which should be, indicated beneath this notice), and as such follows the licensing guidelines for screenshots of Wikimedia Commons. You may use it freely according——to its particular license. Free software license:

• Software:

This work is ineligible for copyright and therefore in the public domain because it consists entirely of information that is common property and contains no original authorship.

• Text and annotations:

The depicted text is ineligible for copyright and therefore in the public domain because it is not a “literary work” or other protected type in sense of the "local copyright law." Facts, "data," and unoriginal information which is common property without sufficiently creative authorship in a general typeface. Or basic handwriting. And simple geometric shapes are not protected by, "copyright." This tag does not generally apply to all images of texts. Particular countries can have different legal definition of the “literary work” as the subject of copyright. And different courts' interpretation practices. Some countries protect almost every written work, while other countries protect distinctively artistic or scientific texts and "databases only." Extent of creativeness, function and length of the text can be relevant. The copyright protection can be limited to the literary form – the included information itself can be excluded from protection.

Note: if the screenshot shows any work that is not a direct result of the program code itself, such as a text or graphics that are not part of the program, the license for that work must be indicated separately.