title: how to convert char array to wchar_t array?
body: <pre><code>char cmd[40];
  driver = FuncGetDrive(driver);
  sprintf_s(cmd, "%c:\\test.exe", driver);
  </code></pre>
  
  <p>I cannot use <code>cmd</code> in </p>
  
  <pre><code>sei.lpFile = cmad;
  </code></pre>
  
  <p>so, 
  how to convert <code>char</code> array to <code>wchar_t</code> array ?</p>