Why do i get this error?

[Pawel]

Hi,
I'm actually learning how to code with QT and I can't understand why the following error appears.

Here is my Code:

#include <QApplication>
#include <QHBoxLayout>
#include <QSlider>
#include <QSpinBox>
 
int main(int argc, char *argv[]){
    QApplication app(argc, argv);
 
    QWidget *window = new QWidget();
    window->setWindowTitle("Enter yout Age!");
 
    QSpinBox *spinbox = new QSpinBox;
    QSlider *slider = new QSlider(QT::Horizontal);
    spinbox->setRange(0, 130);
    slider->setRange(0, 130);
 
    QObject::connect(spinbox, SIGNAL(valueChanged(int)), slider, SLOT(setValue(int)));
    QObject::connect(slider, SIGNAL(valueChanged(int)), spinbox, SLOT(setValue(int)));
    spinbox->setValue(35);
 
    QHBoxLayout *layout = new QHBoxLayout;
    layout->addWidget(spinbox);
    layout->addWidget(slider);
    window->setLayout(layout);
 
    window->show();
 
    return app.exec();
}

#include <QApplication>
#include <QHBoxLayout>
#include <QSlider>
#include <QSpinBox>

int main(int argc, char *argv[]){
    QApplication app(argc, argv);

    QWidget *window = new QWidget();
    window->setWindowTitle("Enter yout Age!");

    QSpinBox *spinbox = new QSpinBox;
    QSlider *slider = new QSlider(QT::Horizontal);
    spinbox->setRange(0, 130);
    slider->setRange(0, 130);

    QObject::connect(spinbox, SIGNAL(valueChanged(int)), slider, SLOT(setValue(int)));
    QObject::connect(slider, SIGNAL(valueChanged(int)), spinbox, SLOT(setValue(int)));
    spinbox->setValue(35);

    QHBoxLayout *layout = new QHBoxLayout;
    layout->addWidget(spinbox);
    layout->addWidget(slider);
    window->setLayout(layout);

    window->show();

    return app.exec();
}

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And I get this error:

main.cpp
.\main.cpp(13) : error C2653: 'QT': is not a class or namespace
.\main.cpp(13) : error C2065: 'Horizontal': undeclared identifier

Can someone help me?

[Zlatomir]

It because there is no QT namespace, the correct version is Qt::Horizontal (is t not T)

[Pawel]

AHmm, why didn't I realize it myself?
Big thx
Now I can go on ^^