IStream与TStream之间的相互转换

procedureTForm1.Button1Click(Sender:TObject);
var
memoStream,OleStream:TStream;
Stream:IStream;
begin
image1.Picture:=nil;
image2.Picture:=nil; //显示初始照片
image1.Picture.LoadFromFile('c:logo.bmp');
memoStream:=TmemoryStream.Create;
try
//将照片保存为TmemoryStream
image1.Picture.Bitmap.SaveToStream(memoStream);
memoStream.Position:=0; //将TmemoryStream转成IStream
stream:=TStreamAdapter.Create(memoStream); //将IStream转成TOleStream==TmemoryStream
OleStream:=TOleStream.Create(Stream);
image2.Picture.Bitmap.LoadFromStream(OleStream);
finally
memoStream.Free;
OleStream.Free;
end;
end;
/////////////////////////// uses ....................AxCtrls,ActiveX;//必加此二单元

（编辑：李大同）

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