Desktop Functions:

   Smart Device Functions:

Show Recent Changes
Subscribe (RSS)
Misc. Pages
Helpful Tools
Suggested Reading
Website TODO List
Support Forum
Download Visual Studio Add-In

Terms of Use
Privacy Policy
GetUserPreferredUILanguages (kernel32)
Retrieves information about the user preferred UI languages.

C# Signature:

[DllImport("Kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
static extern bool GetUserPreferredUILanguages(
   uint dwFlags,
   out uint pulNumLanguages,
   char[] pwszLanguagesBuffer,
   ref uint pcchLanguagesBuffer);

VB Signature:

User-Defined Types:


Alternative Managed API:

Do you know one? Please contribute it!



Tips & Tricks:

The char[] is used because StringBuilder would otherwise stop at the first \0 character, resulting in only one language ever being reported.

Sample Code:

static void DisplayUserPref()
    uint languagesCount, languagesBufferSize = 0;

    if (GetUserPreferredUILanguages(
        out languagesCount,
        ref languagesBufferSize))
        char[] languagesBuffer = new char[languagesBufferSize];
        if (GetUserPreferredUILanguages(
            out languagesCount,
            ref languagesBufferSize))
            string[] languages = new string(languagesBuffer, 0, (int) languagesBufferSize - 2).Split('\0');
            Console.WriteLine("GetUserPreferredUILanguages returns " + languages.Length + " languages:");
            foreach (string language in languages)
                Console.WriteLine("   " + language);
            Console.WriteLine("GetUserPreferredUILanguages(2) returns #" + Marshal.GetLastWin32Error());
        Console.WriteLine("GetUserPreferredUILanguages(1) returns #" + Marshal.GetLastWin32Error());

const uint MUI_LANGUAGE_ID = 0x4;    // Use traditional language ID convention
const uint MUI_LANGUAGE_NAME = 0x8;    // Use ISO language (culture) name convention


Please edit this page!

Do you have...

  • helpful tips or sample code to share for using this API in managed code?
  • corrections to the existing content?
  • variations of the signature you want to share?
  • additional languages you want to include?

Select "Edit This Page" on the right hand toolbar and edit it! Or add new pages containing supporting types needed for this API (structures, delegates, and more).

Access directly from VS:
Terms of Use
Edit This Page
Find References
Show Printable Version