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PO
 

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    <p>Are you sure that it's called automatically or do you have code in your widget that calls it?</p> <p>It's good practice to call it since it sets <code>_started</code> to <code>true</code> which is used by quite a few widgets for determining behavior and/or layout. Most widgets require that you call it (as you've seen).</p> <p><code>startup</code> is heavily used by composite widgets that need to control sub-widgets. </p> <p>Basically, anything that inherits from <code>dijit._Widget</code> should call startup after instantiation.</p> <p><strong>EDITS:</strong></p> <p>There's an <a href="http://www.sitepen.com/blog/2007/11/13/dissecting-dijit/" rel="nofollow noreferrer">article on SitePen</a> about the dijit lifecycle which discusses startup a bit in the article itself and in the comments. It's over two years old though and I think things have changed.</p> <p>The <a href="http://books.google.com/books?id=PgK1GbyiiDUC&amp;pg=PA341&amp;lpg=PA341&amp;dq=dijit+startup&amp;source=bl&amp;ots=6mtKbCG2vS&amp;sig=cmEW74yQnUgSUBJ9zpPZ3J2bKTo&amp;hl=en&amp;ei=_tSKSuePHYvOlAfglIwu&amp;sa=X&amp;oi=book_result&amp;ct=result&amp;resnum=5#v=onepage&amp;q=dijit%20startup&amp;f=false" rel="nofollow noreferrer">O'Reilly dojo book</a> also talks about startup but it says it should be called on containiner widgets. I've had to call it on the grid though so that doesn't make sense either.</p> <p>It doesn't really hurt anything by calling it (unless you call it before children are added to your widget). I'd say always call it.</p>
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    1. POWhen do I have to call the startup() method of programmatically instantiated widgets?
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    1. COI just re-tried, and you are right. Even for my own widget, I have to call startup() myself. Dojo Campus' examples for dijit.layout.ContentPane (http://docs.dojocampus.org/dijit/layout/ContentPane) doesn't call the startup() method. What about this widget ?
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    2. COHmm, you are right. Not quite sure why startup isn't called on that example. I've just always called it out of habit.
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