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constructor TCustomMemo.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
Width := 185;
Height := 89;
AutoSize := False;
FWordWrap := True;
FWantReturns := True;
FLines := TMemoStrings.Create; //<<<<<<<<<
TMemoStrings(FLines).Memo := Self;
end;
var
Str: TStrings;
I: Integer;
begin
Str := TStringList.Create;
try
Str.LoadFromFile('test.txt');
I := Str.IndexOf('■'); //或 I := Pos(Str.Text, '■');
ShowMessage(IntToStr(I));
finally
Str.Free;
end;
end;
I := Str.IndexOf('■'); //或 I := Pos(Str.Text, '■');