Out-of-line definition of --constructor-- does not match any declaration in --class--

[Forfunckle]

I have this header file (graphics_view_zoom.h):

#include <QObject>
#include <view.h>

class Graphics_view_zoom : public QObject {
  Q_OBJECT
public:
  Graphics_view_zoom(View* view);
  // stuff

private:
  View* _view;
  // other stuff

};

And this cpp file (graphics_view_zoom.cpp):

#include "Graphics_view_zoom.h"
#include <view.h>

Graphics_view_zoom::Graphics_view_zoom(View* view) // error: out-of-line definition of 'Graphics_view_zoom' does not match any declaration in 'Graphics_view_zoom'
  : QObject(view), _view(view)
{
   // more stuff
}

Why does this happen? It works fine when I use QGraphicsView* instead of View* (my custom class View inherits from QGraphicsView). Any help is appreciated!

[SGaist]

Hi,

In your declaration you pass an instance and in the implementation you pass a pointer.

[Pl45m4]

@Forfunckle

Is your custom View class a QObject? Otherwise your call of the QObject() c'tor with view as argument won't work.