Why cconvert to PChar?

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Martin Holmes

Posted: 10/29/2003 16:35:46

Hi there,

This may be a silly question -- forgive my ignorance if it is!

I've been looking at some of the demo Delphi code, and I see examples

where you're using a PChar where I wouldn't expect it. Here's one from

the Save HTML example:

procedure TForm1.RichView1RVMouseMove(Sender: TObject; id: Integer);

var RVData: TCustomRVFormattedData;

     ItemNo: Integer;

begin

   if id=-1 then

     StatusBar1.SimpleText := ''

   else begin

     RichView1.GetJumpPointLocation(id, RVData, ItemNo);

     StatusBar1.SimpleText := PChar(RVData.GetItemTag(ItemNo));

   end;

end;

As far as I can see, TStatusBar.SimpleText is a Delphi string;

GetItemTag returns a pointer to a string, so I would have thought you

could assign it directly, or just dereference the pointer.

Cheers,

Martin