Farbänderung des Formularhintergrundes

[DeddyH]

Versuch doch mal Folgendes:

Delphi-Quellcode:

type
  TfrmMain = class(TForm)
  ...
  private
    { Private-Deklarationen }
    procedure CMColorChanged(var Message: TMessage); message CM_COLORCHANGED;

...

procedure TfrmMain.CMColorChanged(var Message: TMessage);
begin
  inherited;
  if Assigned(ListBox1) then
    ListBox1.Repaint;
end;