<tr><td></td><td valign="top"><em>mask</em>&nbsp;</td><td> Mask associated with the line edit. See the
documentation for QLineEdit about masks

<tr><td></td><td valign="top"><em>whatsThis</em>&nbsp;</td><td> a QWhatsThis text for the input widget.

<tr><td></td><td valign="top"><em>completionList</em>&nbsp;</td><td> a list of items which should be used for input completion
</td></tr> </table></dl>
<p> <dl class="return" compact><dt><b>Returns:</b></dt><dd> String user entered if Ok was pressed, else a null 