コントロール"は親ウィンドウを持っていませんというエラーを止めるには？ (ID：29516)

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>>ofZさん
返信ありがとうございます。
試してみましたがやっぱり同じエラーが出てしまいました。

>>KHE00221さん
はい、おっしゃる通り投稿用に少し書きなおしました＞＜

もう少し元ソースっぽくするとこうなります。
procedure TFishEyeView.FormActivate(Sender: TObject);
var
  MaxLength,I,J,K:integer;
function Roundoff(x: double): integer;
begin
  if x>=0 then
    Result:=Trunc(x+0.5)
  else
    Result:=Trunc(x-0.5);
end;
begin
  FilesCount:=100;
  if not(FilesCount=0) then
  begin
    MaxLength:=0;
    for I:=1 to FilesCount do
      if MainPage.WindowsMediaPlayer.URL=RemoteController.FilesListView.Items[I-1].Caption then
        CurrentPositionTime[I]:=MainPage.WindowsMediaPlayer.Controls.CurrentPosition;
    for I:=1 to FilesCount do
      if MaxLength<Roundoff(CurrentPositionTime[I]) then
        MaxLength:=Roundoff(CurrentPositionTime[I]);
    for I:=1 to FilesCount do
    begin
      if Assigned(FOwnerDrawButton[I]) then
        FreeAndNil(FOwnerDrawButton[I]); 
      if CurrentPositionTime[I]>=60 then
      begin
        if Assigned(FOwnerDrawButton[I])=False then
        begin
          FOwnerDrawButton[I]:=TOwnerDrawButton.Create(self);
          FOwnerDrawButton[I].Parent:=FishEyeView;
          FOwnerDrawButton[I].Font.Size:=12;
          FOwnerDrawButton[I].Caption:=IntToStr(I);
        end;
        FOwnerDrawButton[I].Height:=34;
        FOwnerDrawButton[I].Width:=34;
        Randomize;
        n:=Random(4);
        case n of
          0:
          begin
            Yaxis[I]:=Roundoff(CurrentPositionTime[I])*(ClientHeight div 2) div MaxLength;
            for J:=0 to 9 do
              if (J*ClientHeight div 20<=Yaxis[I]) and (Yaxis[I]<=(J+1)*ClientHeight div 20) then
              begin
                FOwnerDrawButton[I].Height:=FOwnerDrawButton[I].Height+J*5;
                FOwnerDrawButton[I].Width:=FOwnerDrawButton[I].Width+J*5;
              end;
            for J:=1 to FilesCount do
              for K:=0 to 9 do
                if Yaxis[J]>=((ClientHeight*K) div 20) then
                  Xaxis[J]:=((ClientWidth*K) div 20)+Random(((ClientWidth*(20-K*2)) div 20)+1);
          end;
          1:
          begin
            Xaxis[I]:=Roundoff(CurrentPositionTime[I])*(ClientWidth div 2) div MaxLength;
            for J:=0 to 9 do
              if (J*ClientWidth div 20<=Xaxis[I]) and (Xaxis[I]<=(J+1)*ClientWidth div 20) then
              begin
                FOwnerDrawButton[I].Height:=FOwnerDrawButton[I].Height+J*5;
                FOwnerDrawButton[I].Width:=FOwnerDrawButton[I].Width+J*5;
              end;
            for J:=1 to FilesCount do
              for K:=0 to 9 do
                if Xaxis[J]>=((ClientWidth*K) div 20) then
                  Yaxis[J]:=((ClientHeight*K) div 20)+Random(((ClientHeight*(20-K*2)) div 20)+1);
          end;
          2:
          begin
            Yaxis[I]:=abs((Roundoff(CurrentPositionTime[I])*(ClientHeight div 2) div MaxLength)-ClientHeight);
            for J:=10 to 19 do
              if (J*ClientHeight div 20<=Yaxis[I]) and (Yaxis[I]<=(J+1)*ClientHeight div 20) then
              begin
                FOwnerDrawButton[I].Height:=FOwnerDrawButton[I].Height+(19-J)*5;
                FOwnerDrawButton[I].Width:=FOwnerDrawButton[I].Width+(19-J)*5;
              end;
            for J:=1 to FilesCount do
              for K:=10 to 19 do
                if Yaxis[J]>=(ClientHeight*K) div 20 then
                  Xaxis[J]:=((ClientWidth*(19-K)) div 20)+Random(((ClientWidth*(20-(19-K)*2)) div 20)+1);
          end;
          3:
          begin
            Xaxis[I]:=abs((Roundoff(CurrentPositionTime[I])*(ClientWidth div 2) div MaxLength)-ClientWidth);
            for J:=10 to 19 do
              if (J*ClientWidth div 20<=Xaxis[I]) and (Xaxis[I]<=(J+1)*ClientWidth div 20) then
              begin
                FOwnerDrawButton[I].Height:=FOwnerDrawButton[I].Height+(19-J)*5;
                FOwnerDrawButton[I].Width:=FOwnerDrawButton[I].Width+(19-J)*5;
              end;
            for J:=1 to FilesCount do
              for K:=10 to 19 do
                if Xaxis[J]>=((ClientWidth*K) div 20) then
                  Yaxis[J]:=((ClientHeight*(19-K)) div 20)+Random(((ClientHeight*(20-(19-K)*2)) div 20)+1);
          end;
        end;
        FOwnerDrawButton[I].Left:=Xaxis[I]-FOwnerDrawButton[I].Width;
        if Xaxis[I]-FOwnerDrawButton[I].Width<0 then
          FOwnerDrawButton[I].Left:=Xaxis[I];
        FOwnerDrawButton[I].Top:=Yaxis[I]-FOwnerDrawButton[I].Height;
        if Yaxis[I]-FOwnerDrawButton[I].Height<0 then
          FOwnerDrawButton[I].Top:=Yaxis[I];
      end;
    end;
  end;
end;

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