Problem streaming checkpoint to DB

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Author

Message

Mitch Tracy

Posted: 07/13/2005 6:29:07

Hi,

Have upgraded to version 1.9.14.1 from version 1.7. One issue has arisen.  I

am having trouble streaming documents back to my database that have

checkpoints in them.

Using the very nice editor as a basis for tRichView my app, I create the

checkpoint with this code:

procedure TfrmRvDbEdit.InsertSoftPageBreak1Click(Sender: TObject);

var

  iCheckPointNo : Integer;

  CheckpointData: TCheckpointData;

begin

  if NOT DropCheckpoint then Exit; // remove the checkpoint if it already

exists

  with RichViewEdit1 do

    try

      SetCheckpointInfoEd(CurItemNo, 999, k_SoftBreak, False); //

k_SoftBreak = 'SoftPageBreak';

    except

      on E:Exception do

        MessageDlg(E.Message + ' Error placing soft page break'

                  ,mtError

                  ,[mbOk], 0);

    end;

end;

When the editing is finished, I stream the document back to the database

like this:

In version 1.7, all was well.  Sadly, the new version throws an error in

this function  when I try to stream the document back to the database.

function RVFSaveTag(TagsArePChars:Boolean; Tag: Integer): String;

begin

  if TagsArePChars then

    if (Tag=0) or (PChar(Tag)[0]=#0) then  // � error occurs right here

because the value 'Tag' is null

      Result := RVFTagEmptyStr

    else

     {$IFDEF RICHVIEWCBDEF3}

      Result := AnsiQuotedStr(PChar(Tag), '"')

     {$ELSE}

     Result := PChar(Tag)

     {$ENDIF}

  else

    Result := IntToStr(Tag)

end;

Here's the call stack.  The bottom two items are mine, the rest is RichView

RVFSaveTag(???,0)

RVFWriteCheckpoint($2E0A7A0,True,nil)

RVFWritePrevStrings(1)

TCustomRVData.SaveRVFToStreamEx($2E0A7A0,rvfss_Full,536870911,$2E18C70,$2E09384)

TCustomRVData.SaveRVFToStream(???,???,536870911,$2E18C70,$2E09384)

TCustomRichView.SaveRVFToStream($2E0A7A0,False)

TfrmDBDocuments.Edit1Click(???)

TfrmMain.Documents2Click(???)

Here is my actual calling code:

      try

        try

          Stream := TMemoryStream.Create;

          if bSetEdit then ADOTbl.Edit;

          RichViewEdit1.SaveRVFToStream(Stream, False); � calling

SaveRVFToStream

So, what am I doing wrong?  The checkpoint reads into the editor fine, just

getting it out and back to the database is the problem

So, what am I doing wrong?  The checkpoint reads into the editor fine, just

getting it out is the problem

Many Thanks,

-          Mitch