Cloning VPEControl

[hilmar]

Using C# I'm trying to clone an extended (inherited) VPEControl

I have a class VPEDocument which inherits from VPEControl ( public class VPEDocument : IDEALSoftware.VpeProfessional.VpeControl )

I have made a VPEDocument.Clone() function which does the following:

Code: Select all

public VPEDocument Clone()
{

   IDEALSoftware.VpeProfessional.TVPEStream stream = this.CreateMemoryStream(0);

   if (!this.WriteDocStream(stream))
   {
      stream.Close();
      throw new Exception("Clone: Error writing to stream. VPEError = " + this.LastError);
   }

   VPEDocument newDoc = new VPEDocument();
   newDoc.OpenDoc();
   if (!newDoc.ReadDocStream(stream))
   {
      stream.Close();
      throw new Exception("Clone:Error reading from stream. VPEError = " + newDoc.LastError);
   }

   stream.Close();
   return newDoc;

}


When I call the newDoc.ReadDocStream(stream) I get an FileDocVersion error.

How can i avoid this? I'm currently using the VPE professional version (trial).

(I have lots of free RAM)

Cheers,
Marius

[hilmar]

Debug info of TVPEStream after the ReadDocStream(stream) call

The State, which was True before ReadDocStream, is now False.

Code: Select all

System.IO.Stream {IDEALSoftware.VpeProfessional.TVPEStream}
      CanRead   true   bool
      CanSeek   true   bool
      CanWrite   true   bool
      IsEof   true   bool
      Length   0x0000000000000000   long
      ObjectHandle   0x00000000   int
      Position   0x0000000000000000   long
      State   false   bool


[IDEAL Software Support]

Did you modify the property DocExportType before? Please make sure it is either "Auto" (this is the default) or "VPE" before calling WriteDocStream().

You must also call stream.Seek(0, Begin) before calling ReadDocStream(), because after calling WriteDocStream() the position within the stream is at the end of the stream.

If this does not help, please let me know and we will examine the case.

[hilmar]

You must also call stream.Seek(0, Begin) before calling ReadDocStream(), because after calling WriteDocStream() the position within the stream is at the end of the stream.

Thanks, that did the trick!

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