SLOT 'setEnable(true)' nicht gefunden

[deleted369]

Hallo,

ich möchte bei Klick auf Btn1 den Btn2 anzeigen.

QObject::connect(btn1, SIGNAL(clicked()), btn2, SLOT(setEnabled(true)));

aber ich bekomme hier die Fehlermeldung:
QObject::connect(btn1, SIGNAL(clicked()), btn2, SLOT(setEnabled(true)));

Wieso?

[JonB]

@getit
Wenn Sie mein Schuele-Deutsch verstehen koennen ;)

You cannot pass a parameter to the function in your SLOT declaration. You could only write SLOT(setEnabled(bool)). To pass your value of true, you either need to write it as a lambda or write a dedicated function to call the btn2.setEnabled(true).

[Gojir4]

@getit Sorry I don't speak German.
You can try using a lambda.

QObject::connect(btn1, QPushButton::clicked, [this](){
    btn2->setEnabled(true)
}

• You cannot use parameter in signal-slot connection
• QPushButton::clicked() and `QWidget::setEnabled(bool) are not compatible

[deleted369]

@Gojir4 said in SLOT 'setEnable(true)' nicht gefunden:

@getit Sorry I don't speak German.
You can try using a lambda.

QObject::connect(btn1, QPushButton::clicked, [this](){
    btn2->setEnabled(true)
}

• You cannot use parameter in signal-slot connection
• QPushButton::clicked() and `QWidget::setEnabled(bool) are not compatible

Vielen Dank!!

QObject::connect(btn1, &QPushButton::clicked, [btn2]() {
        btn2->setEnabled(true);
    });