title: What if I don't call ReleaseBuffer after GetBuffer?
body: <p>From <a href="https://stackoverflow.com/questions/559483/cstring-to-char">CString to char*</a>, <code>ReleaseBuffer()</code> must be used after <code>GetBuffer()</code>. But why? What will happen if I don't use <code>ReleaseBuffer()</code> after <code>GetBuffer()</code>?</p>
  
  <p>Can somebody show me an example? Thanks.</p>