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<center><h1>Class <a href="type_Uq_tcl.tcl_event_system.html">Uq_tcl.tcl_event_system</a></h1></center> <br> <pre><span class="keyword">class</span> <a name="TYPEtcl_event_system"></a>tcl_event_system : <code class="type">?run:<a href="Uq_tcl.html#TYPErunner">runner</a> -> unit -> </code><code class="type"><a href="Unixqueue.event_system.html">Unixqueue.event_system</a></code></pre>This class is an alternate implementation of the Unixqueue event systems for the TCL event loop. Use this class instead of <code class="code">unix_event_system</code>. <p> Both Unixqueue and TCL provide event queues for system events, and it is possible to merge both queues such that events may happen and be processed on one queue while the other queue blocks. <p> To achieve this, just use this class instead of <code class="code">unix_event_system</code>. It automatically creates handlers for the TCL loop when necessary. However, you must not invoke the method <code class="code">run</code>, as this class does not provide its own event loop. Instead, ensure that <code class="code">Tk.mainLoop</code> is called. <p> Of course, this is all intended to help writing applications which have a graphical user interface (GUI) built with labltk, and some network functionality which is designed to work in the background. Simply create your GUI with labltk, and after the button is pressed which starts the network I/O, you add resources to this event queue, and the I/O will be processed concurrently with any user input coming from the GUI. <p> Note: The implementation is not thread-safe (and neither TCL).<br> <hr width="100%"> </body></html>
