This post explains how you can obtain the user’s display name (a.k.a. “real name” or “full name”) in Windows, using Python’s ctypes module. However, it also serves as a mini tutorial/demonstration of ctypes.
First, a bit of background. I researched this while working on a patch for Jokosher. When you create a new project in Jokosher, it will prompt you with a dialog asking for the name of the project and so on. One of the fields in this dialog is the Author field, which by default should be filled with the logged-in user’s real name. While there are several ways to get the user’s login ID (a.k.a. “username”), there is no easy way to get their real name (display name) in Windows.
For the impatient, here is the full code. Continue reading if you want to know how it works and maybe learn a bit about ctypes. Otherwise, copy away. Note, however, that it does not have any error checking whatsoever.
import ctypes def get_display_name(): GetUserNameEx = ctypes.windll.secur32.GetUserNameExW NameDisplay = 3 size = ctypes.pointer(ctypes.c_ulong(0)) GetUserNameEx(NameDisplay, None, size) nameBuffer = ctypes.create_unicode_buffer(size.contents.value) GetUserNameEx(NameDisplay, nameBuffer, size) return nameBuffer.value