I am working on MS Visual Studio. I keep on getting this error:

"Run-Time Check Failure #3 - The variable 'test' is being used without being initialized."

I don't have any idea how to solve this. Here is the code that I'm currently tries to modify:

STDMETHODIMP CButtonDemoBHO::Exec(const GUID*, DWORD nCmdID, DWORD d, VARIANTARG*, VARIANTARG* pvaOut)
     {

   CRebarHandler *test;

   switch (nCmdID){
   case BUTTON_PRESSED:
   MessageBox(m_hWnd, L"You have pressed the button", L"Button Pressed", MB_OK);
   test->findButton(m_hWnd);
      test->setmenu();
      break;

      case MENU_ITEM_SELECT:
   MessageBox(m_hWnd, L"You have simulated a button press with the menu ", L"Menu Pressed", MB_OK);
   break;

      }

return S_OK; }