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Export a registry key to reg file

Posted on 2006-07-12
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Last Modified: 2010-10-05
Hi.

I need to export a key (containing subkeys) before i delete it.
Is there any Windows API for that ?

Thanks in advance.
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Question by:CodedK
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LVL 26

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Russell Libby earned 1200 total points
ID: 17092483
You can use RegSaveKey if you don't care that format is binary. Now if you want to export to a text format (Same as regedit does) that can be imported back in using regedit, then check out my RegTransfer unit @:

http://users.adelphia.net/~rllibby/downloads/regtransfer.zip

I will also post a demo of it in a second.

Regards,
Russell
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LVL 26

Expert Comment

by:Russell Libby
ID: 17092517

Example code:

procedure TForm1.Button1Click(Sender: TObject);
var  strmFile:      TFileStream;
     dwMark:        LongWord;
begin

  dwMark:=GetTickCount;

  // Create stream
  strmFile:=TFileStream.Create('c:\testing.reg', fmCreate);
  try
     // Start the export
     RegExportBegin(strmFile);
     // Export a key and all its sub keys / values
     RegExportKey(strmFile, HKEY_CURRENT_USER, 'Software\Microsoft');
     // End the export
     RegExportEnd(strmFile);
  finally
     // Free the stream
     strmFile.Free;
  end;

  dwMark:=GetTickCount-dwMark;
  MessageBox(0, PChar(IntToStr(dwMark)), nil, MB_OK);

end;

It does run extermely fast, appx 4MB of data exported / second. The unit is also able to import the data (regedit can import the format as well) at the same speed that regedit can.

Regards,
Russell



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LVL 16

Author Comment

by:CodedK
ID: 17094783
Thanks Russell i'll check it tomorrow.
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LVL 26

Expert Comment

by:Russell Libby
ID: 17095139
No hurry..
Russell
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LVL 16

Author Comment

by:CodedK
ID: 17097561
Thank you very much Russell :) :) :)
It is perfect !
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