Cannot find .moc files - QObject Error?

[mjv817]

Hey guys, new to QT development and have been going through some example code. When I try to compile the code I receive an error msg about missing .moc files.

Currently on windows 10, using the QT Creator IDE. I Have a main.cpp file, header file, and definition file.

.pro file

/QT       += core gui

CONFIG += c++11

TARGET = NewGUI

TEMPLATE = app

SOURCES += \
    hello.cpp
    finddialog.cpp



HEADERS += \
    finddialog.h

/

.header file

/#ifndef FINDDIALOG_H
#define FINDDIALOG_H
#include <QDialog>

class QCheckBox;
class QLabel;
class QLineEdit;
class QPushButton;


class FindDialog : public QDialog
{
    Q_OBJECT
public:
    FindDialog(QWidget *parent = 0);
signals:
    void findNext(const QString &str, Qt::CaseSensitivity cs);
    void findPrev(const QString &str, Qt::CaseSensitivity cs);

private slots:
    void findClicked();
    void enableFindButton(const QString &text);
private:
    QLabel *label;
    QLineEdit *lineEdit;
    QCheckBox *caseCheckBox;
    QCheckBox *backwardCheckBox;
    QPushButton *findButton;
    QPushButton *closeButton;
};

#endif // FINDDIALOG_H

/

finddialog.cpp

/#include <QtGui>
#include "finddialog.h"


FindDialog::FindDialog(QWidget *parent) : QDialog(parent)
{
    label = new QLabel(tr("Find &what:"));
    lineEdit = new QLineEdit;
    label->setBuddy(lineEdit);

    caseCheckBox = new QCheckBox(tr("Match &case"));
    backwardCheckBox = newQCheckBox(tr("Search &backward"));


    findButton = new QPushButton(tr("&Find"));
    findButton->setDefault(true);

    findButton->setEnabled(false);
    closeButton = new QPushButton(tr("Close"));

    connect(lineEdit,SIGNAL(textChanged(const QString &)), this, SLOT(enableFindButton(const QString &)));

    connect(findButton, SIGNAL(clicked()),this, SLOT(findClicked()));

    connect(closeButton, SIGNAL(clicked()), this, SLOT(close()));


    QHBoxLayout *topLeftLayout = new QHBoxLayout;
    topLeftLayout->addWidget(label);
    topLeftLayout->addWidget(lineEdit);


    QVBoxLayout *leftLayout = new QVBoxLayout;
    leftLayout->addLayout(topLeftLayout);
    leftLayout->addWidget(caseCheckBox);
    leftLayout->addWidget(backwardCheckBox);

    QVBoxLayout *rightLayout = new QVBoxLayout;
    rightLayout->addWidget(findButton);
    rightLayout->addWidget(closeButton);
    rightLayout->addStretch();

    QHBoxLayout *mainLayout = new QHBoxLayout;
    mainLayout->addLayout(leftLayout);
    mainLayout->addLayout(rightLayout);
    setLayout(mainLayout);

    setWindowTitle(tr("Find"));
    setFixedHeight(sizeHint().height());



}

void FindDialog::findClicked()
{
    QString text = lineEdit->text();
    Qt::CaseSensitivity cs = caseCheckBox->isChecked() ? Qt::CaseSensitive : Qt::CaseInsensitive;

    if (backwardCheckBox->isChecked()) {
        emit findPrevious(text, cs);
    }
    else {
        emit findNext(text,cs);
    }

}

void FindDialog::enableFindButton(const QString &text)
{
    findButton->setEnabled(!text.isEmpty());
}
/

main

/#include <QApplication>
#include "finddialog.h"
#include "main.moc"
int main (int argc, char *argv[])
{



    QApplication app(argc, argv);
    FindDialog *dialog = new FindDialog;

    dialog->show();
    return app.exec();


    return app.exec();

}



/

[SGaist]

Hi and welcome to devnet,

Which version of Qt are you using ?

There's no need for than main.moc include.

[mjv817]

@SGaist

Running 4.1.0 (Community)

When I remove the #include main.moc file the compiler generates several linkage errors. The book I am reading through mentions this issue and says to run the qmake file again to fix this problem. From my limited understanding the .moc file generation should happen automatically once I regenerate the make file. Not sure why that is not happening.

[SGaist]

4.1 ? That version is almost 11 years old.

Since you are starting, please get Qt 5. The current version is 5.7 with 5.8 beta also available.

[mjv817]

OK went and downloaded the .exe again to reinstall. It appears I am running QT 5.7. I am still having this issue though. So after doing a bit more search I found one error,

I needed to replace #include<QtGui> with <QtWidgets>.

Now I am receiving two errors for the same problem. "identifier not found" in my finddialog file.

Edit

Figured out the rest of my errors. Had a misspelled variable. Got it working now.

Thanks!

[SGaist]

Great !

Since you have it working now, please mark the thread as solved using the "Topic Tools" button so that other forum users may know a solution have been found :)