C# Signature:

[DllImport("kernel32.dll", SetLastError=true, CharSet=CharSet.Auto)]
static extern uint GetWindowsDirectory(StringBuilder lpBuffer,
   uint uSize);

VB Signature

Declare Function GetWindowsDirectory Lib "kernel32" Alias "GetWindowsDirectoryA" _
   (ByVal Buffer As String, ByVal Size As Integer) As Integer

User-Defined Types:

None.

Notes:

None.

Tips & Tricks:

Please add some!

Here are two ways to get the Windows path

   Private Sub test()
      Dim sSystemPath As String = System.Environment.GetFolderPath(Environment.SpecialFolder.System)
      MessageBox.Show(sSystemPath.Substring(0, sSystemPath.LastIndexOf("\")))
      MessageBox.Show(System.Environment.GetEnvironmentVariable("windir"))
   End Sub

VB Sample Code:

   As SDim WinDir tring = Space(255)
   Dim Res As Integer = GetWindowsDirectory(WinDir, WinDir.Length)
   WinDir = WinDir.Substring(0, Res)

C# Sample Code:

   const int MaxPathLength = 255;
   StringBuilder sb = new StringBuilder(MaxPathLength);
   int len = (int)GetWindowsDirectory(sb, MaxPathLength);
   _windowsDirectory = sb.ToString(0, len);

Alternative Managed API:

Environment.GetEnvironmentVariable("windir");

   [DllImport("Kernel32.dll", SetLastError=true, CharSet=CharSet.Auto)]]
    static extern uint GetWindowsDirectory(StringBuilder sb,ref int i);
     static string wins()
      {
        StringBuilder sb =new StringBuilder(100);
        int i = 100; uint f;
       GetWindowsDirectory(sb,ref  i);
       return sb.ToString()  ;
    }

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).