Cant use QWidget::setParent().

[vitaR]

Hi.

I have a new class called Piece, tried to inherit QLabel or QPushButton, everything is good, but once I try to set a parent (QWidget *container) its says

error: "void QWidget::setParent(QWidget*)' is inaccessible
void setParent(QWidget *parent);
^."

After see that QLabel wasn't working, tried with QPushButton and happened the same thing.

My Example Class:

#ifndef PIECE_H
#define PIECE_H
#include <QPushButton>
#include <QMouseEvent>
 
class Piece : QPushButton{
    Q_OBJECT
public:
    Piece();
 
 
};
#endif // PIECE_H

#ifndef PIECE_H
#define PIECE_H
#include <QPushButton>
#include <QMouseEvent>

class Piece : QPushButton{
    Q_OBJECT
public:
    Piece();


};
#endif // PIECE_H

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