Suppose I am including a feature in my image-viewing software, which opens an image in Photoshop ('Send to Photoshop'), using Photoshop's OLE automation framework.Am I allowed to use the icon of Photoshop.exe as the image of this 'Send to' button?
Can I legally use the icon of a different software?
legal;copyright
No, as per Use of Adobe icons and web logos:You may not use Adobe product icons except under a written license from Adobe.You may qualify for use of an Adobe product icon(s) under a program offered through an Adobe Partner program. If you are not eligible for any of these programs, you may be eligible to use one of Adobe's web logos or a box shot of an Adobe product instead.You should however contact Adobe directly and ask permission to use Photoshop's icon. It's a long shot, but it's not unthinkable that they'd want their icon to be in an image viewing software since it's one of their core areas of expertise and you'd be advertising them for free. Long shot, but worth a try, all you need to do is send them an email.