...die Farbe einer TProgressbar ändern?

uses
  CommCtrl;

procedure TForm1.Button1Click(Sender: TObject);
begin
  // Set the Background color to teal
  Progressbar1.Brush.Color := clTeal;
  // Set bar color to yellow
  SendMessage(ProgressBar1.Handle, PBM_SETBARCOLOR, 0, clYellow);
end;

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