Brauche hilfe bei übersetzung von C# in ObjectPascal (.Net)

[Taladan]

Hallo. Ich möchte eine Klasser in .Net erstellen, die auch Hyperlinks anzeigen kann. Bisher habe ich keine entsprechende Komponente gefunden. Eine Komponente jedoch, die in C# geschrieben und auf der RichTextBox basiert, die so was kann. Leider kann ich kein C# und der Code ist für den Start doch ein wenig viel des guten.
Würde mich freuen, wenn jemand mir bei der Übersetzung hilft. Seien es nur Teile oder gar die ganze Komponente.

Hier die C# Datei:

Delphi-Quellcode:

using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;
using System.Runtime.InteropServices;

namespace RichTextBoxLinks
{
   public class RichTextBoxEx : RichTextBox
   {
      #region Interop-Defines
      [ StructLayout( LayoutKind.Sequential )]
      private struct CHARFORMAT2_STRUCT
      {
         public UInt32   cbSize; 
         public UInt32   dwMask; 
         public UInt32   dwEffects; 
         public Int32    yHeight; 
         public Int32    yOffset; 
         public Int32   crTextColor; 
         public byte     bCharSet; 
         public byte     bPitchAndFamily; 
         [MarshalAs(UnmanagedType.ByValArray, SizeConst=32)]
         public char[]   szFaceName; 
         public UInt16   wWeight;
         public UInt16   sSpacing;
         public int      crBackColor; // Color.ToArgb() -> int
         public int      lcid;
         public int      dwReserved;
         public Int16   sStyle;
         public Int16   wKerning;
         public byte      bUnderlineType;
         public byte      bAnimation;
         public byte      bRevAuthor;
         public byte      bReserved1;
      }

      [DllImport("user32.dll", CharSet=CharSet.Auto)]
      private static extern IntPtr SendMessage(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam);

      private const int WM_USER          = 0x0400;
      private const int EM_GETCHARFORMAT    = WM_USER+58;
      private const int EM_SETCHARFORMAT    = WM_USER+68;

      private const int SCF_SELECTION   = 0x0001;
      private const int SCF_WORD      = 0x0002;
      private const int SCF_ALL      = 0x0004;

      #region CHARFORMAT2 Flags
      private const UInt32 CFE_BOLD      = 0x0001;
      private const UInt32 CFE_ITALIC      = 0x0002;
      private const UInt32 CFE_UNDERLINE   = 0x0004;
      private const UInt32 CFE_STRIKEOUT   = 0x0008;
      private const UInt32 CFE_PROTECTED   = 0x0010;
      private const UInt32 CFE_LINK      = 0x0020;
      private const UInt32 CFE_AUTOCOLOR   = 0x40000000;
      private const UInt32 CFE_SUBSCRIPT   = 0x00010000;      /* Superscript and subscript are */
      private const UInt32 CFE_SUPERSCRIPT= 0x00020000;      /*  mutually exclusive          */

      private const int CFM_SMALLCAPS      = 0x0040;         /* (*)   */
      private const int CFM_ALLCAPS      = 0x0080;         /* Displayed by 3.0   */
      private const int CFM_HIDDEN      = 0x0100;         /* Hidden by 3.0 */
      private const int CFM_OUTLINE      = 0x0200;         /* (*)   */
      private const int CFM_SHADOW      = 0x0400;         /* (*)   */
      private const int CFM_EMBOSS      = 0x0800;         /* (*)   */
      private const int CFM_IMPRINT      = 0x1000;         /* (*)   */
      private const int CFM_DISABLED      = 0x2000;
      private const int CFM_REVISED      = 0x4000;

      private const int CFM_BACKCOLOR      = 0x04000000;
      private const int CFM_LCID         = 0x02000000;
      private const int CFM_UNDERLINETYPE   = 0x00800000;      /* Many displayed by 3.0 */
      private const int CFM_WEIGHT      = 0x00400000;
      private const int CFM_SPACING      = 0x00200000;      /* Displayed by 3.0   */
      private const int CFM_KERNING      = 0x00100000;      /* (*)   */
      private const int CFM_STYLE         = 0x00080000;      /* (*)   */
      private const int CFM_ANIMATION      = 0x00040000;      /* (*)   */
      private const int CFM_REVAUTHOR      = 0x00008000;


      private const UInt32 CFM_BOLD      = 0x00000001;
      private const UInt32 CFM_ITALIC      = 0x00000002;
      private const UInt32 CFM_UNDERLINE   = 0x00000004;
      private const UInt32 CFM_STRIKEOUT   = 0x00000008;
      private const UInt32 CFM_PROTECTED   = 0x00000010;
      private const UInt32 CFM_LINK      = 0x00000020;
      private const UInt32 CFM_SIZE      = 0x80000000;
      private const UInt32 CFM_COLOR      = 0x40000000;
      private const UInt32 CFM_FACE      = 0x20000000;
      private const UInt32 CFM_OFFSET      = 0x10000000;
      private const UInt32 CFM_CHARSET   = 0x08000000;
      private const UInt32 CFM_SUBSCRIPT   = CFE_SUBSCRIPT | CFE_SUPERSCRIPT;
      private const UInt32 CFM_SUPERSCRIPT= CFM_SUBSCRIPT;

      private const byte CFU_UNDERLINENONE      = 0x00000000;
      private const byte CFU_UNDERLINE         = 0x00000001;
      private const byte CFU_UNDERLINEWORD      = 0x00000002; /* (*) displayed as ordinary underline   */
      private const byte CFU_UNDERLINEDOUBLE      = 0x00000003; /* (*) displayed as ordinary underline   */
      private const byte CFU_UNDERLINEDOTTED      = 0x00000004;
      private const byte CFU_UNDERLINEDASH      = 0x00000005;
      private const byte CFU_UNDERLINEDASHDOT      = 0x00000006;
      private const byte CFU_UNDERLINEDASHDOTDOT   = 0x00000007;
      private const byte CFU_UNDERLINEWAVE      = 0x00000008;
      private const byte CFU_UNDERLINETHICK      = 0x00000009;
      private const byte CFU_UNDERLINEHAIRLINE   = 0x0000000A; /* (*) displayed as ordinary underline   */

      #endregion

      #endregion

      public RichTextBoxEx()
      {
         // Otherwise, non-standard links get lost when user starts typing
         // next to a non-standard link
         this.DetectUrls = false;
      }

      [DefaultValue(false)]
      public new bool DetectUrls
      {
         get { return base.DetectUrls; }
         set { base.DetectUrls = value; }
      }

      /// <summary>
      /// Insert a given text as a link into the RichTextBox at the current insert position.
      /// </summary>
      /// <param name="text">Text to be inserted</param>
      public void InsertLink(string text)
      {
         InsertLink(text, this.SelectionStart);
      }

      /// <summary>
      /// Insert a given text at a given position as a link. 
      /// </summary>
      /// <param name="text">Text to be inserted</param>
      /// <param name="position">Insert position</param>
      public void InsertLink(string text, int position)
      {
         if (position < 0 || position > this.Text.Length)
            throw new ArgumentOutOfRangeException("position");

         this.SelectionStart = position;
         this.SelectedText = text;
         this.Select(position, text.Length);
         this.SetSelectionLink(true);
         this.Select(position + text.Length, 0);
      }
      
      /// <summary>
      /// Insert a given text at at the current input position as a link.
      /// The link text is followed by a hash (#) and the given hyperlink text, both of
      /// them invisible.
      /// When clicked on, the whole link text and hyperlink string are given in the
      /// LinkClickedEventArgs.
      /// </summary>
      /// <param name="text">Text to be inserted</param>
      /// <param name="hyperlink">Invisible hyperlink string to be inserted</param>
      public void InsertLink(string text, string hyperlink)
      {
         InsertLink(text, hyperlink, this.SelectionStart);
      }

      /// <summary>
      /// Insert a given text at a given position as a link. The link text is followed by
      /// a hash (#) and the given hyperlink text, both of them invisible.
      /// When clicked on, the whole link text and hyperlink string are given in the
      /// LinkClickedEventArgs.
      /// </summary>
      /// <param name="text">Text to be inserted</param>
      /// <param name="hyperlink">Invisible hyperlink string to be inserted</param>
      /// <param name="position">Insert position</param>
      public void InsertLink(string text, string hyperlink, int position)
      {
         if (position < 0 || position > this.Text.Length)
            throw new ArgumentOutOfRangeException("position");

         this.SelectionStart = position;
         this.SelectedRtf = @"{\rtf1\ansi "+text+@"\v #"+hyperlink+@"\v0}";
         this.Select(position, text.Length + hyperlink.Length + 1);
         this.SetSelectionLink(true);
         this.Select(position + text.Length + hyperlink.Length + 1, 0);
      }

      /// <summary>
      /// Set the current selection's link style
      /// </summary>
      /// <param name="link">true: set link style, false: clear link style</param>
      public void SetSelectionLink(bool link)
      {
         SetSelectionStyle(CFM_LINK, link ? CFE_LINK : 0);
      }
      /// <summary>
      /// Get the link style for the current selection
      /// </summary>
      /// <returns>0: link style not set, 1: link style set, -1: mixed</returns>
      public int GetSelectionLink()
      {
         return GetSelectionStyle(CFM_LINK, CFE_LINK);
      }


      private void SetSelectionStyle(UInt32 mask, UInt32 effect)
      {
         CHARFORMAT2_STRUCT cf = new CHARFORMAT2_STRUCT();
         cf.cbSize = (UInt32)Marshal.SizeOf(cf);
         cf.dwMask = mask;
         cf.dwEffects = effect;

         IntPtr wpar = new IntPtr(SCF_SELECTION);
         IntPtr lpar = Marshal.AllocCoTaskMem( Marshal.SizeOf( cf ) ); 
         Marshal.StructureToPtr(cf, lpar, false);

         IntPtr res = SendMessage(Handle, EM_SETCHARFORMAT, wpar, lpar);

         Marshal.FreeCoTaskMem(lpar);
      }

      private int GetSelectionStyle(UInt32 mask, UInt32 effect)
      {
         CHARFORMAT2_STRUCT cf = new CHARFORMAT2_STRUCT();
         cf.cbSize = (UInt32)Marshal.SizeOf(cf);
         cf.szFaceName = new char[32];

         IntPtr wpar = new IntPtr(SCF_SELECTION);
         IntPtr lpar =    Marshal.AllocCoTaskMem( Marshal.SizeOf( cf ) ); 
         Marshal.StructureToPtr(cf, lpar, false);

         IntPtr res = SendMessage(Handle, EM_GETCHARFORMAT, wpar, lpar);

         cf = (CHARFORMAT2_STRUCT)Marshal.PtrToStructure(lpar, typeof(CHARFORMAT2_STRUCT));

         int state;
         // dwMask holds the information which properties are consistent throughout the selection:
         if ((cf.dwMask & mask) == mask) 
         {
            if ((cf.dwEffects & effect) == effect)
               state = 1;
            else
               state = 0;
         }
         else
         {
            state = -1;
         }
         
         Marshal.FreeCoTaskMem(lpar);
         return state;
      }
   }
}

Und hier meine bisherige Übersetzung:

Delphi-Quellcode:

unit RichBoxHyperlink;

interface

uses
  System.Drawing, System.Collections, System.ComponentModel, System.Windows.Forms,
  System.Runtime.InteropServices;


type
   charformat2 = class
   private
    cbSize : System.UInt32;
    dwMask : System.UInt32;
    dwEffects : System.UInt32;
    yHeight : System.Int32;
    yOffset : System.Int32;
      crTextColor : System.Int32;
      bCharSet : system.Byte;
      bPitchAndFamily : system.Byte;
     [MarshalAs(UnmanagedType.ByValArray, SizeConst=32)]
     szFaceName : system.Char;
    wWeight : system.UInt16;
    sSpacing : System.UInt16;
      crBackColor : System.Int32; // Color.ToArgb() -> int
      lcid : System.Int32;
      dwReserved : System.Int32;
    sStyle : System.Int16;
    wKerning : System.Int16;
    bUnderlineType : System.Byte;
    bAnimation : System.Byte;
    bRevAuthor : System.Byte;
    bReserved1 : System.Byte;
   end;


  TRichBoxHyperlink = class(System.Windows.Forms.Richtextbox)
  {$REGION 'Vom Designer verwalteter Code'}
  strict private
    /// <summary>
    /// Erforderliche Designervariable.
    /// </summary>
    Components: System.ComponentModel.Container;
    /// <summary>
    /// Erforderliche Methode zur Unterstützung des Designers -
    /// ändern Sie die Methode nicht mit dem Quelltext-Editor
    /// </summary>
    procedure InitializeComponent;
  {$ENDREGION}
  strict protected
    /// <summary>
    /// Ressourcen nach der Verwendung bereinigen
    /// </summary>
    procedure Dispose(Disposing: Boolean); override;
  private
    { Private-Deklarationen }
    FDetectUrls : boolean;
    const WM_User : System.int32 = 32;
    function get_urls : boolean ;
    procedure set_urls(Value : boolean);

  public
    constructor Create; overload;
    constructor Create(Container: System.ComponentModel.IContainer); overload;
    procedure InsertLink(text : String); overload;
    procedure InsertLink(text : String; position : Integer); overload;
  published
    property DetectUrls : boolean read get_urls write set_urls default false;
  end;



implementation

uses
  System.Globalization;

{$AUTOBOX ON}

{$REGION 'Vom Windows Form-Designer erzeugter Code'}
/// <summary>
/// Erforderliche Methode zur Unterstützung des Designers -
/// ändern Sie die Methode nicht mit dem Quelltext-Editor
/// </summary>

procedure TRichBoxHyperlink.InitializeComponent;
begin
  Self.Components := System.ComponentModel.Container.Create;
end;

{$ENDREGION}

function TRichBoxHyperlink.get_urls : boolean;
begin
  result := FDetectUrls;
end;

procedure TRichBoxHyperlink.InsertLink(text : String);
begin
  InsertLink(Text, Self.SelectionStart);
end;


procedure TRichBoxHyperlink.InsertLink(text : String; position : Integer);
begin
  if (Position < 0) or (Position > self.Text.Length) then ArgumentOutOfRangeException.Create('Position') else
  begin
//         self.SelectionStart := position;
//         self.SelectedText := text;
//         self.Select(position, text.Length);
//         self.SetSelectionLink(true);
//         self.Select(position + text.Length, 0);
  end;
end;


procedure TRichBoxHyperlink.set_urls(Value : boolean);
begin
  FDetectUrls := Value;
end;

constructor TRichBoxHyperlink.Create;
begin
  inherited Create;
  //
  // Erforderlich für die Unterstützung des Windows Forms-Designers
  //
  InitializeComponent;
  //
  // TODO: Fügen Sie nach dem Aufruf von InitializeComponent Konstruktorcode hinzu.
  //
end;

constructor TRichBoxHyperlink.Create(Container: System.ComponentModel.IContainer);
begin
  inherited Create;
  //
  // Erforderlich für die Unterstützung des Windows Forms-Designers
  //
  Container.Add(Self);
  InitializeComponent;
  //
  // TODO: Fügen Sie nach dem Aufruf von InitializeComponent Konstruktorcode hinzu.
  //
end;

procedure TRichBoxHyperlink.Dispose(Disposing: Boolean);
begin
  if Disposing then
  begin
    if Components <> nil then
      Components.Dispose();
  end;
  inherited Dispose(Disposing);
end;

end.

Und beide Dateien als Anhang