How to know whether I have admin authority in windows？

Question

Is there any APIs in windows to detect whether the current user(current now) has the admin authority?

BOOL IsHasAuthority（） { }

Many Thanks!

Answer 1

How to Determine Whether a Process or Thread Is Running As an Administrator

Use this solution when you are writing an application that must determine whether any of the following is true:

• The current user can perform administrative tasks. The current
  user is a member of the
• Administrators group. A supplied token handle represents an
  administrator with an elevated token.
• A token handle represents a user who is a member of the Administrators group.
• The program is running with an elevated token or needs to spawn a
  child program that is elevated so it
  can perform administrative tasks.

Answer 2

You can use the Windows API function CheckTokenMembership(). The MSDN documentation for that function has an example demonstrating how to check for membership in the Administrators local group.