View source for SCREENTHROW and NOSCREENTHROW (JANUS DEFINE parameters)

{{DISPLAYTITLE:SCREENTHROW and NOSCREENTHROW}}
<span class="pageSubtitle">Throw or don't throw [[WebScreenException class|WebScreenException]] exceptions on client errors.</span>

<var>SCREENTHROW</var> and <var>NOSCREENTHROW</var> are parameters on <var>[[JANUS DEFINE]]</var>, which indicate whether or not [[WebScreenException class|WebScreenException]] exceptions are to be thrown on client errors. 

Indicates whether or not <var>[[WebScreenException class|WebScreenException]]</var> exceptions are to be thrown on client errors. <var>NOSCREENTHROW</var>, the default, indicates that <var>WebScreenException</var> exceptions will not be thrown on client errors. When <var>NOSCREENTHROW</var> is used, client errors will typically result in a redisplay of the page in standard [[Janus Web Legacy Support|Janus Web legacy]] mode (<var>[[XMLSCREEN and NOXMLSCREEN (JANUS DEFINE parameters)|NOXMLSCREEN]]</var>) and a user restart in [[Janus Web Legacy XML Support|Janus Web Legacy XML]] mode (<var>[[XMLSCREEN and NOXMLSCREEN (JANUS DEFINE parameters)|XMLSCREEN]]</var>)  

The <var>SCREENTHROW</var> and <var>NOSCREENTHROW</var> parameters are available in Model 204 7.6 and later. 

You can override the <var>SCREENTHROW</var> and <var>NOSCREENTHROW</var> parameters on the <var>JANUS DEFINE</var> command on a URL basis using the like-named parameters in <var>[[JANUS WEB SCREEN]]</var> rules.

After a <var>WebScreenException</var> is thrown, the Janus Web inputs are still available to the application, so you can use <var>SCREENTHROW</var> to allow a Janus Web Legacy application to switch modes, by catching a response from a client that is not a response to the 3270 screen read page.

Valid only for <var>[[JANUS DEFINE#type|WEBSERV]]</var> ports.

==See also==

<ul>
<li>[[List of Janus commands]]
<li>[[JANUS DEFINE#parmlist|List of JANUS DEFINE parameters]]
</ul>

[[Category:JANUS DEFINE parameters|SCREENTHROW and NOSCREENTHROW]]