Macros not working in XPCOM

[Nikhil Kadu]

Hi Everybody,

 

I am building a simple component with basic functionalities.

 

My code is:-

 

#include <stdio.h>

#include "nsIGenericFactory.h"

#ifndef MOZILLA_STRICT_API
#define MOZILLA_STRICT_API
#endif

#include "nsIModule.h"
#include "nsIFactory.h"
#include "nsIComponentManager.h"
#include "nsIComponentRegistrar.h"

#include "plstr.h"
#include "stdio.h"
#include "nsCOMPtr.h"
#include "nsMemory.h"

#define SAMPLE_CID \
{ 0x777f7150, 0x4a2b, 0x4301, \
{ 0xad, 0x10, 0x5e, 0xab, 0x25, 0xb3, 0x22, 0xaa}}

class Sample: public nsISupports {   
public: 
  Sample(); 
  virtual ~Sample(); 

  NS_DECL_ISUPPORTS
}; 

Sample::Sample()  !
{ 
  // note: in newer versions of Gecko (1.3 or later)
  // you don't have to do this:
  NS_INIT_ISUPPORTS(); 
} 
Sample::~Sample() 
{ 
} 

NS_IMPL_ISUPPORTS(Sample, nsISupports);

NS_GENERIC_FACTORY_CONSTRUCTOR(Sample);

static const nsModuleComponentInfo components[] =
{
  { "Pretty Class Name",
    SAMPLE_CID,
    "@company.com/sample"
    SampleConstructor
  }
};

NS_IMPL_NSGETMODULE(nsSampleModule, components)

 

 

I am getting the error "nsISupports cannot instantiate abstract class due to member funtions Queryinterface, Addref,Release"

 

When i searched the implementation of these functions, i just got their declaration in nsISupportsbase.h ... Where is there implementation ??

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