Calling parent's method - c++

Question

I'm kinda newbie to all this c++ stuff, so this probably is a beginner's problem:
ListScreen.h
#ifndef _LISTSCREEN_H_
#define _LISTSCREEN_H_
#include "MAUI/Screen.h"
namespace CoolPlaces {
namespace Views {
using namespace MAUI;
class ListScreen : public Screen {
public:
ListScreen();
~ListScreen();
void keyPressEvent(int keyCode, int nativeCode) {}
void keyReleaseEvent(int keyCode, int nativeCode) {}
void pointerPressEvent(MAPoint2d point) {}
void pointerReleaseEvent(MAPoint2d point) {}
void pointerMoveEvent(MAPoint2d point) {}
void show();
};
}
}
#endif //_LISTSCREEN_H_
ListScreen.cpp
#include "MAUI/Screen.h"
#include "ListScreen.h"
using namespace MAUI;
using namespace CoolPlaces::Views;
void ListScreen::show() {
Screen::show();
};
I'm getting this error: D:\MosyncProjects\Views\ListScreen.cpp:22: Error: Unresolved symbol '__ZN4MAUI6Screen4showEv' line 22 in this Screen::show(); call (for purpose of this topic I removed some code). So what exactly am I doing wrong here?

Answer 1

You're including the header file, which tells that the function Screen::show() exists, but probably not linking the library, which has the implementation.
See this page: http://www.mosync.com/docs/sdk/cpp/guides/libs/working-with-mosync-libraries/index.html
Specifically:
As well as referencing the header files in your application code, you also need to specify the actual libraries that you want to use in the project's Build Settings (Project > Properties > MoSync Project > Build Settings):
It looks like maui.lib should contain the screen code.