use WString instead.
listen to the clicked() signal if you want to react to a single click, or activated() signal if you want to react to a doulbe click.
see WDate::fromString() static methods.
Use internalPath() instead, which is consistent with the internal paths generated by Wt.
The value returned is somewhat browser-specific, and it is therefore recommended to use the key() method instead.
layoutAlignment
is no longer needed and its value is ignored