Unresolved external symbol errors in basic project

enjoysmath

mainwindow.obj:-1: error: LNK2019: unresolved external symbol "public: __cdecl Editor::Editor(class QString &,class QMainWindow *)" (??0Editor@@QEAA@AEAVQString@@PEAVQMainWindow@@@Z) referenced in function "private: void __cdecl MainWindow::on_actionNew_triggered(void)" (?on_actionNew_triggered@MainWindow@@AEAAXXZ)

On a very basic app. I created an Editor class using the C++ header / source convention and am getting weird errors like this. No cyclically included headers.

Is this a no brainer or do you need more info from me?

I am getting these even though I write out the functions in the header file and remove the editor.cpp from the project. IT'S WEIRD.

SGaist

Hi,

Did you properly export/import the class ?

Can you show the header you wrote ?

enjoysmath

This post is deleted!

enjoysmath

This post is deleted!

enjoysmath

@SGaist Still getting the error. Here is my editor.h:

#ifndef EDITOR_H
#define EDITOR_H

#include <QMainWindow>
#include <QGraphicsView>

class Editor : public QGraphicsView
{
public:
    Editor(QString& name, QMainWindow* window);
    QString& tabName();

private:
    QMainWindow* m_window;
    QString m_name;
};

#endif // EDITOR_H

And my editor.cpp:

#include "editor.h"

Editor::Editor(QString& name, QMainWindow* window)
{
    m_name = name;
    m_window = window;
}

QString& Editor::tabName() {
    return m_name;
}

enjoysmath

Okay I fixed it by just creating a Qt Form Class with the new item wizard and renaming everything with QWidget to QGraphicsView, etc

SGaist

Can you show your new version of your code ?