@msdn=http://search.microsoft.com/search/results.aspx?qu=$$$ @pinvoke=http://pinvoke.net/$$$.htm Summary: Truncates a path to fit within a certain number of characters by replacing path components with ellipses. !!!!C# Signature: [DllImport("shlwapi.dll", CharSet=CharSet.Auto)] static extern bool PathCompactPathEx([Out] StringBuilder pszOut, string szPath, int cchMax, int dwFlags); !!!!VB.NET Signature: ''' <summary> ''' Truncates a path to fit within a certain number of characters by replacing path components with ellipses. ''' </summary> ''' <param name="pszOut">The address of the string that has been altered.</param> ''' <param name="pszSrc">A pointer to a null-terminated string of length MAX_PATH that contains the path to be altered.</param> ''' <param name="cchMax"> ''' The maximum number of characters to be contained in the new string, including the terminating null character. ''' For example, if cchMax = 8, the resulting string can contain a maximum of 7 characters plus the terminating null character. ''' </param> ''' <param name="reserved">Reserved</param> ''' <returns>Returns TRUE if successful, or FALSE otherwise.</returns> <DllImport("shlwapi.dll", EntryPoint:="PathCompactPathExW", SetLastError:=True, CharSet:=CharSet.Unicode)> _ Shared Public Function PathCompactPathEx( <MarshalAs(UnmanagedType.LPTStr)> pszOut As System.Text.StringBuilder, <MarshalAs(UnmanagedType.LPTStr)> pszSrc As String, cchMax As UInteger, reserved As Integer ) As <MarshalAs(UnmanagedType.Bool)> Boolean End Function !!!!VB Signature: Public Declare Function PathCompactPathEx Lib "shlwapi" Alias "PathCompactPathExA" _ (ByVal pszOut As String, _ ByVal pszSrc As String, _ ByVal cchMax As Long, _ ByVal dwFlags As Long) As Long !!!!User-Defined Types: None. !!!!Notes: If you have an HDC, take a look at PathCompactPath !!!!Tips & Tricks: Please add some! !!!!Sample Code: !!!!C# Example using System; using System.Runtime.InteropServices; using System.Text; namespace CompactPathCmd { /// <summary> /// Test code for PathCompactPathEx /// </summary> class Program { /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main(string[] args) { string longPath = "c:\\a\\very\\very\\long\\path\\that\\needs\\to\\be\\shortened\\by\\calling\\the\\PathCompactpathEx"; int length = 40; string result = CompactPath(longPath, length); Console.WriteLine(" 1 2 3 4 5 6 7"); Console.WriteLine("1234567890123456789012345678901234567890123456789012345678901234567890123456789"); Console.WriteLine(result); // displays : "c:\a\very\very\long...\PathCompactpathEx" } [DllImport("shlwapi.dll", CharSet=CharSet.Auto)] static extern bool PathCompactPathEx([Out] StringBuilder pszOut, string szPath, int cchMax, int dwFlags); public static string CompactPath(string longPathName, int wantedLength) { // NOTE: You need to create the builder with the required capacity before calling function. // See http://msdn.microsoft.com/en-us/library/aa446536.aspx StringBuilder sb = new StringBuilder(wantedLength + 1); PathCompactPathEx(sb, longPathName, wantedLength + 1, 0); return sb.ToString(); } } } !!!!Sample Code: !!!!VB Example Private Function CompactPath(path As String) As String Const MAX_WIDTH As Integer = 79 If path.Length <= MAX_WIDTH Then Return path ' NOTE: You need to create the builder with the required capacity before calling function. ' See http://msdn.microsoft.com/en-us/library/aa446536.aspx Dim sb As New Text.StringBuilder(MAX_WIDTH + 1) PathCompactPathEx(sb, path, MAX_WIDTH + 1, 0) Return sb.ToString() End Function !!!!Alternative Managed API: System.Windows.Forms.TextRenderer.MeasureText(String, Font, Size, TextFormatFlags.ModifyString | TextFormatFlags.PathEllipsis); Documentation: PathCompactPathEx@msdn on MSDN TextRenderer.MeasureText@msdn on MSDN
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