uses winskindlg;

Type
TMySkinManage=class(TSkinManage);

procedure TForm1.BitBtn2Click(Sender: TObject);
var
P: Pchar;
begin
P := Pointer(TMySkinManage(SkinManager).FindSkinForm(Handle));
if P = nil then exit;
P := P+104; //D5的话请将104改为88，未经测试
Pstring(P)^ := Edit1.Text;
Caption := Edit1.Text;
end;