Hiding Minimized MDI Child Windows

To hide minimized MDI child windows, you must trap its WM_Size message, like this:

type

  TForm1 = class(TForm)

  public

    procedure WMSize(var M : TWMSIZE);Message WM_Size;

  end;



implementation



procedure TForm1.WMSize(var M:TWMSIZE);

begin

  if M.SizeType=Size_Minimized then

    showwindow(Handle,Sw_Hide);

end;