ClassTypes-Gui.html#t%3AQUndoStack"
>QUndoStack</A
> ()) ((,) (<A HREF="Qtc-ClassTypes-Core.html#t%3AQObject"
>QObject</A
> t1) (<A HREF="Qtc-ClassTypes-Core.html#t%3AQEvent"
>QEvent</A
> t2))</TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
></TD
></TR
><TR
><TD CLASS="s15"
></TD
></TR
><TR
><TD CLASS="decl"
><SPAN CLASS="keyword"
>class</SPAN
>  <A NAME="t:Qreceivers"
><A NAME="t%3AQreceivers"
></A
></A
><B
>Qreceivers</B
> x0 x1  <SPAN CLASS="keyword"
>where</SPAN
></TD
></TR
><TR
><TD CLASS="body"
><TABLE