Zugriffsverletzung bei umgebogen Parent des Fensters

[Piethan]

Danke Euch, das war es!

Delphi-Quellcode:

procedure TForm14.Btn1Click(Sender: TObject);
begin
  frm_Test:= Tfrm_Test.Create(self);
  frm_Test.Parent:= sheet1;
  sheet1.Glyph.Assign(frm_Test.Icon);
  sheet1.Caption:=frm_Test.Caption;
  frm_Test.Height:=sheet1.Height;
  frm_Test.Width:= sheet1.Width;
  frm_Test.Show;
  SetLength(pagesArry, pgcMain.PageCount);
  pagesArry[0]:=frm_Test.Handle;
  pgcMain.ActivePageIndex:=0;
end;

Delphi-Quellcode:

procedure Tfrm_Test.btnStartClick(Sender: TObject);
begin
  frmdbselect:= Tfrmdbselect.Create(frm_Test);
  frmdbselect.Visible:=True;
  frmdbselect.nxflpnl1.Caption:= 'Select';
  frmdbselect.Parent:= sheetGetParams;
  frmdbselect.Left:=0;
  frmdbselect.Top:=200;
  frmdbselect.Show;
end;