C / C++ / MFC

void CTestDlg::FunWithFile
  (CFileDialog& cd)
{
  MessageBox(_T("Hello"), _T("Test Message"), MB_OK);
}

void CTestDlg::FunWithFile(CFileDialog& cd)
{
    MessageBox(_T("Hello"), _T("Test Message"), MB_OK);
}

<br />
--------------------Configuration: Test - Win32 Debug--------------------<br />
Compiling...<br />
TestDlg.cpp<br />
C:\Documents and Settings\np0383\My Documents\C++\Test\TestDlg.cpp(192) : error C2352: 'CWnd::MessageBoxA' : illegal call of non-static member function<br />
        c:\program files\microsoft visual studio\vc98\mfc\include\afxwin.h(2197) : see declaration of 'MessageBoxA'<br />
Error executing cl.exe.<br />
<br />
Test.exe - 1 error(s), 0 warning(s)<br />

class CTestDlg : public CDialog
{
...
static void FunWithFile(CFileDialog & cd);
...
};

void AnyFunctionYouWant()
{
   CFileDialog fd(TRUE);
   if( fd.DoModal() == IDOK )
   {
        CTestDlg::FunWithFile( fd );//uses the scope resolution operator
                                    //to access the function....
   }
}

 ::MessageBox(NULL, _T("blah blah"), _T("blah"), MB_OK);
//or
 AfxMessageBox(_T("blah blah blah");

CFooClass foo;<br />
foo.bar();

// These two lines do the same thing<br />
(*pfoo).bar();  // Method 1 - use the dereference operator<br />
pfoo->bar();    // Method 2 - use the -> operator

CReadIntoSybaseDlg::StartThreadFunc()
{
   m_pThWorker = AfxBeginThread(TestThread, this);//<-- note, passing this 
                                                  //ptr, not 0
}
UINT CReadIntoSybaseDlg::TestThread(LPVOID lpvParam)
{
   CReadIntoSybaseDlg * pThis = reinterpret_cast<CReadIntoSybaseDlg*>(lpvParam);
  ASSERT( pThis );//if this goes off, you passed the wrong param to 
                  //AfxBeginThread

  pThis->RunThread();
  return 0;
}