Strange one with zLib..

[Ian Branch 127]

Hi Team,

D11.3.1.

I have this compression routine.

procedure CompressStream(SourceStream: TMemoryStream; DestStream: TMemoryStream);
var
  ZStream           : TCompressionStream;
begin
  ZStream := TCompressionStream.Create(clDefault, DestStream);
  try
    ZStream.CopyFrom(SourceStream, SourceStream.Size);
  finally
    ZStream.Free;
  end;
end;

If I have this procedure in my main form it is happy.

If I move it to my Function library, I get this..

 

Why should it be happy in the main form an not in the library?

Yes, I have System.ZLib in the uses in both cases

Thoughts/suggestions?

 

Regards & TIA,

Ian

 

[Lajos Juhász 293]

Most probably one of other units define the TCompressionStream class. You can try to rearange your uses statement or prefix the classname with the unitname.

[Ian Branch 127]

Hi Lajos,

Great call.  I found that if I had the System.Zlib after the VCL.Graphics, all is fine.  Before and I get the issue.

Tks for the assist.

 

Regards,

Ian

 

Edit:  I didn't need VCL.Graphics in the library anyway. 😉

Edited May 11, 2023 by Ian Branch