C# Signature:

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

VB Signature:

User-Defined Types:

None.

Alternative Managed API:

Do you know one? Please contribute it!

Notes:

None.

Tips & Tricks:

Please add some!

Sample Code:

static void DisplayUserPref()
{
    StringBuilder languagesBuffer = new StringBuilder();
    uint languagesCount, languagesBufferSize = 0;

    if (GetUserPreferredUILanguages(MUI_LANGUAGE_NAME, out languagesCount, null, ref languagesBufferSize))
    {
        languagesBuffer.EnsureCapacity((int)languagesBufferSize);
        if (GetUserPreferredUILanguages(MUI_LANGUAGE_NAME, out languagesCount, languagesBuffer, ref languagesBufferSize))
        {
            string[] languages = languagesBuffer.ToString().Split(new char[] { '\0' });
            Console.WriteLine("GetUserPreferredUILanguages returns " + languages.Length + " languages:");
            foreach (string language in languages)
                Console.WriteLine("   " + language);
        }
        else
            Console.WriteLine("2nd call to GetUserPreferredUILanguages returns Win32 error code #" + Marshal.GetLastWin32Error());
    }
    else
        Console.WriteLine("1st call to GetUserPreferredUILanguages returns Win32 error code #" + 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).