No member named X in

Cervo2paille

Hello Everyone,
I got the following error :

I can call my page itselft and it's work, but when i call another (MainWindow), it doesn't find the "setModal".
Why ?
If you need mainwindow.h :

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>

QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = nullptr);
    ~MainWindow();

private slots:
    void on_pushButton_3_clicked();

private:
    Ui::MainWindow *ui;
};
#endif // MAINWINDOW_H

and my pageprincipale.h :

#ifndef PAGEPRINCIPALE_H
#define PAGEPRINCIPALE_H

#include <QDialog>

namespace Ui {
class pagePrincipale;
}

class pagePrincipale : public QDialog
{
    Q_OBJECT

public:
    explicit pagePrincipale(QWidget *parent = nullptr);
    ~pagePrincipale();

private slots:
    void on_pushButton_clicked();

private:
    Ui::pagePrincipale *ui;
};

#endif // PAGEPRINCIPALE_H

Thank you

Christian Ehrlicher

@Cervo2paille said in No member named X in:

I can call my page itselft and it's work, but when i call another (MainWindow), it doesn't find the "setModal".

Because QMainWindow has no such a function: https://doc.qt.io/qt-6/qmainwindow-members.html, only QDialog has such functions.

mpergand

@Cervo2paille
Salut,

There is some confusion between pageprincipale and MainWidow.

pageprincipale is your dialog.
And this is MainWindow that receives the signal on_pushButton_3_clicked, not pageprincipale.

Cerveau de paille tête en l'air :)

Cervo2paille

@Christian-Ehrlicher
Thank you. So i can't call my QMainWindow ? Maybe another way exists do to that ?

@mpergand Thanks for you answer.
I got a pushbutton in my pagePrincipale to go to my MainWindow, and i got another push button in my MainWindow to go to my pagePrincipale too ;)

jsulm

@Cervo2paille said in No member named X in:

So i can't call my QMainWindow ?

You can, but you can't call a method on an instance of a class which does not have such a method - isn't that logical?

J.Hilk

@Cervo2paille
your QMainWinow instance it telling you to "Go Fish".

Nothing you can do about it. Use a QDialog or one of its derivatives.

That said, what exactly do you want to archive here, can you describe it a bit more?