title: using strcpy_s for TCHAR pointer (Microsoft Specific)
body: <p>I was wondering which is the correct way?</p>
  
  <pre><code>_tcscpy(tchar_pointer, _tcslen(tchar_pointer), _T("Hello World"));
  </code></pre>
  
  <p>or</p>
  
  <pre><code>_tcscpy(tchar_pointer, _tcsclen(tchar_pointer), _T("Hello World"));
  </code></pre>
  
  <p>or</p>
  
  <pre><code>_tcscpy(tchar_pointer, ???, _T("Hello World"));
  </code></pre>