.RESW File Extension
File TypeWindows Resources File
What is a RESW file?
Resource file used by Windows and Silverlight applications; contains strings that are used to localize the application for different languages and contexts; replaces .RESX files in some application development scenarios; often used with XAML applications, which abstract the user interface strings to resource files.
When RESW files are built into the application, they are compiled into a binary format and are stored in .PRI files.