KeyEvent on StackedWidget

[Benj]

Hey, at first i must apologize for my poor english. I am new in Qt and seek for an solution of the follow issue. First my code:

bool MainWindow::eventFilter(QObject *obj, QEvent *ev){
    if((obj == ui->stackedWidget) && (ui->stackedWidget->currentIndex() == 1)){
        if(ev->type() == QEvent::KeyPress)
        {
            QKeyEvent key = static_cast<QKeyEvent>(ev);
            if(key.key() == Qt::Key_Control){
 
                ui->stackedWidget->setCurrentIndex(0); 
                this-> tcpSocket->closeSocket();
 
            }
 
        }
        else{
            QPoint position = this->mapToGlobal(this->pos());
            int x = position.x(); int y=position.y();
            this->cursor().setPos((x/2)+175, (y/2)+175);
        }
 
        return true;
    }
 
}

bool MainWindow::eventFilter(QObject *obj, QEvent *ev){
    if((obj == ui->stackedWidget) && (ui->stackedWidget->currentIndex() == 1)){
        if(ev->type() == QEvent::KeyPress)
        {
            QKeyEvent key = static_cast<QKeyEvent>(ev);
            if(key.key() == Qt::Key_Control){

                ui->stackedWidget->setCurrentIndex(0); 
                this-> tcpSocket->closeSocket();

            }

        }
        else{
            QPoint position = this->mapToGlobal(this->pos());
            int x = position.x(); int y=position.y();
            this->cursor().setPos((x/2)+175, (y/2)+175);
        }

        return true;
    }

}

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after my attempt to check wether control key was pressed, about a key event in this function, i received folllow error message:

Error: no matching function for call to 'QKeyEvent::QKeyEvent(QEvent*&)'
QKeyEvent key = static_cast<QKeyEvent>(ev);

somebody has an idea??

[high_flyer]

you forgot the pointer '*':

QKeyEvent* key = static_cast<QKeyEvent>(ev);

QKeyEvent* key = static_cast<QKeyEvent>(ev);

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Why are you using static_cast??
I think what you are after is dynamic_cast<>

[d_stranz]

you forgot the pointer '*':

So did you

QKeyEvent * key = dynamic_cast<QKeyEvent *>(ev);

QKeyEvent * key = dynamic_cast<QKeyEvent *>(ev);

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[Benj]

I have the pointers set now, such as bottom in the cut out of my code. It works finaly, Thank You!!!

bool MainWindow::eventFilter(QObject *obj, QEvent *ev){
    if((obj == ui->stackedWidget) && (ui->stackedWidget->currentIndex() == 1)){
        if(ev->type() == QEvent::KeyPress)
        {
            QKeyEvent *key = dynamic_cast<QKeyEvent*>(ev);
            if(key->key() == Qt::Key_Control){
 
                ui->stackedWidget->setCurrentIndex(0);
                ui->stackedWidget->setCursor(Qt::ArrowCursor);
                this->tcpSocket->closeSocket();
                return true;
            }
 
        }
        else{
            this->position = this->mapToGlobal(this->pos());
            int x = position.x(); int y=position.y();
            this->cursor().setPos((x/2)+175, (y/2)+175);
            return true;
        }
 
        return false;
    }
}

bool MainWindow::eventFilter(QObject *obj, QEvent *ev){
    if((obj == ui->stackedWidget) && (ui->stackedWidget->currentIndex() == 1)){
        if(ev->type() == QEvent::KeyPress)
        {
            QKeyEvent *key = dynamic_cast<QKeyEvent*>(ev);
            if(key->key() == Qt::Key_Control){

                ui->stackedWidget->setCurrentIndex(0);
                ui->stackedWidget->setCursor(Qt::ArrowCursor);
                this->tcpSocket->closeSocket();
                return true;
            }

        }
        else{
            this->position = this->mapToGlobal(this->pos());
            int x = position.x(); int y=position.y();
            this->cursor().setPos((x/2)+175, (y/2)+175);
            return true;
        }

        return false;
    }
}

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