Creating classes

[gabor53]

Hi,
I created a myDelegate class using File->NewFile->C++ class.
It created the following 2 files:
mydelegate.h:

#ifndef MYDELEGATE_H
#define MYDELEGATE_H

#include <QObject>
#include <QWidget>

class myDelegate : public QItemDelegate
{
public:
    myDelegate();
};

#endif // MYDELEGATE_H

and mydelegate.cpp:

#include "mydelegate.h"

myDelegate::myDelegate()
{

}

When I run build I keep getting the following error message:
C:\Programming\Projects\Folkfriends_1_0\mydelegate.h:8: error: expected class-name before '{' token
{
^
What did I miss?
Thank you.

[jsulm]

@gabor53
You forgot

#include <QItemDelegate>

in mydelegate.h

[VRonin]

You are also missing Q_OBJECT and the parent in the constructor. On top of that in Qt5 QItemDelegate is deprecated, use QStyledItemDelagate instead

mydelegate.h:

#ifndef MYDELEGATE_H
#define MYDELEGATE_H

#include <QStyledItemDelegate>

class myDelegate : public QStyledItemDelegate
{
Q_OBJECT
public:
    explicit myDelegate(QObject* parent = nullptr);
virtual ~myDelegate(); /* if there is the remote chance of your delegate becoming base class for another delegate save yourselves hours of debug for memory leaks and just declare a virtual destructor */
};

#endif // MYDELEGATE_H

mydelegate.cpp:

#include "mydelegate.h"

myDelegate::myDelegate(QObject* parent)
:QStyledItemDelegate(parent)
{

}
myDelegate::~myDelegate(){

}

[gabor53]

@VRonin
Thank you. It still gives me the following error message:
C:\Programming\Projects\Folkfriends_1_0\mydelegate.h:11: error: expected unqualified-id before '}' token
}
^

[gabor53]

The last error message was fixed by adding a ; after class myDelegate in mydelegate.h:

class myDelegate;

In return I got new error messages:
C:\Programming\Projects\Folkfriends_1_0\mydelegate.cpp:3: error: undefined reference to `vtable for myDelegate'
collect2.exe:-1: error: error: ld returned 1 exit status

[mrjj]

@gabor53 said in Creating classes:

table for myDelegate'

Clean All
Run qmake from the build menu.
Build all

Should cure it

[gabor53]

@mrjj
It did. Thank you.