これが私の古いコードの一部です。役立つかどうかを確認してください。
type
THackMemoryStream = class(TMemoryStream);
procedure Clear(const Document: IHTMLDocument2);
begin
Document.write(PSafeArray(VarArrayAsPSafeArray(VarArrayOf([WideString('')]))));
Document.close;
end;
procedure LoadFromStream(const Document: IHTMLDocument2; Stream: TStream);
var
Persist: IPersistStreamInit;
begin
Clear(Document);
Persist := (Document as IDispatch) as IPersistStreamInit;
OleCheck(Persist.InitNew);
OleCheck(Persist.Load(TStreamAdapter.Create(Stream)));
end;
procedure SetHtml(const Document: IHTMLDocument2; const Html: WideString);
var
Stream: TMemoryStream;
begin
Stream := TMemoryStream.Create;
try
THackMemoryStream(Stream).SetPointer(PWideChar(Html), (Length(Html) + 1) * SizeOf(WideChar));
Stream.Seek(0, soFromBeginning);
LoadFromStream(Document, Stream);
finally
Stream.Free;
end;
end;