opening a selected file or directory
<p>I will try to explain this clearly.  Using the mouse, we select files or directories in explorer, and what I want to know is, when an item gets selected (may be a file or a dir), I want to open the selected item programmatically.</p>

<p>It's a bit difficult for me.  I want to know how to get the window handle of a selected
 or focused file or dir.  Thanks.</p>
