Undefined reference to BApplication

Forum thread started by matio on Tue, 2010-03-16 19:21

I am trying to compile the code at the bottom of the post, but when I do it says: Undefined reference to BApplication

   // file: funkyapp.h
 
   class FunkyApplication : public BApplication 
   {
   public:
      FunkyApplication();
   };
 
   // file: funkyapp.cpp
 
   #include <Window.h>
   #include <Application.h> 
 
   #include "funkyapp.h" 
 
 
   int main() 
   { 
      // create a new FunkyApplication (inherited from BApplication) object
 
      FunkyApplication myFunkyApplication;
 
      // enter the message loop
 
      myFunkyApplication.Run(); 
 
   }
 
   // the constructor
 
   FunkyApplication::FunkyApplication()
      : BApplication("application/x-vnd.funkyapp")
   {
      // we cannot do  BWindow myFunkyWindow(BRect(10,10,210,110), "Funky Title", B_TITLED_WINDOW, NULL ); 
      // like we did with BApplication, because Show() will return immediately. If allocated on the
      // stack, the memory used by myFunkyWindow would be released while in use.
 
      BWindow* myFunkyWindow = new BWindow(BRect(10,10,210,110), "Funky Title", B_TITLED_WINDOW, NULL ); 
 
      // make window visible
 
      myFunkyWindow->Show();
   }

Comments

Re: Undefined reference to BApplication

by stargater - 2010-03-16 21:30

you need to include on top in the header "funkyapp.h:

#include < Application.h>

...


and in funkyapp.cpp

#include "funkyapp.h" 

#include < Window.h>
...

Re: Undefined reference to BApplication

by koki - 2010-03-17 23:54

When entering code, please enclose it between the <code> tags so that it displays correctly. ;)

Re: Undefined reference to BApplication

by matio - 2010-03-18 15:47

Sorry, I'm not quite sure what you mean about the includes, I tried reordering them (is that what you meant, I didn't think it was...):

   // file: funkyapp.cpp


   #include "funkyapp.h"
   #include 



   int main()
   {
      // create a new FunkyApplication (inherited from BApplication) object

      FunkyApplication myFunkyApplication;

      // enter the message loop

      myFunkyApplication.Run();

   }

   // the constructor
     FunkyApplication::FunkyApplication()
      : BApplication("application/x-vnd.funkyapp")
   {
      // we cannot do  BWindow myFunkyWindow(BRect(10,10,210,110), "Funky Title", B_TITLED_WINDOW, NULL );
      // like we did with BApplication, because Show() will return immediately. If allocated on the
      // stack, the memory used by myFunkyWindow would be released while in use.

      BWindow* myFunkyWindow = new BWindow(BRect(10,10,210,110), "Funky Title", B_TITLED_WINDOW, NULL );

      // make window visible
        myFunkyWindow->Show();
   }





// header
   // file: funkyapp.h
   #include 
   class FunkyApplication : public BApplication
   {
   public:
      FunkyApplication();
   };