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<H1>[Gtk-sharp-list] How to show custom window and do the computation in the background</H1>
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<B>Maciej Pilichowski</B>
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<A HREF="mailto:gtk-sharp-list%40lists.ximian.com?Subject=%5BGtk-sharp-list%5D%20How%20to%20show%20custom%20window%20and%20do%20the%0A%09computation%20in%20the%20background&In-Reply-To=4C277534.8020507%40chrishowie.com"
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TITLE="[Gtk-sharp-list] How to show custom window and do the computation in the background">bluedzins at wp.pl
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<I>Sun Jun 27 13:13:30 EDT 2010</I>
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<PRE>On Sunday 27 June 2010 17:58:44 Christopher David Howie wrote:
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><i> The only thing you really have to worry about is if the Show() call
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</I>><i> happens after the Destroy() call. But again, as you should be
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</I>><i> using Application.Invoke() to call Destroy(), the dialog cannot be
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</I>><i> destroyed until it is shown, since it is shown before control
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</I>><i> returns to the GLib main loop.
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</I>><i>
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</I>><i> Make sense?
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</I>
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Yes, but with the shift I described not such worry:
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public void UpdateCorpusInfo()
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{
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var dlg = new ProgressDialog("My title");
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var thread = new Thread (new ParameterizedThreadStart
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(doUpdateCorpusInfo));
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thread.Start(dlg);
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}
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private void doUpdateCorpusInfo(object _arg)
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{
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var dlg = (ProgressDialog)_arg;
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try
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{
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Gtk.Application.Invoke (delegate{ dlg.Show(); });
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// loading data and refreshing GUI (via Invoke)
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}
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finally
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{
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if (dlg!=null)
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Gtk.Application.Invoke (delegate{ dlg.Destroy();});
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}
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}
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><i> I thought it already had an example of this... or maybe it was
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</I>><i> removed. I'm not sure. But I do recall reading such an example on
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</I>><i> the Mono website a while ago.
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</I>
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There are examples, but all scattered all over the page, there is no
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section (task oriented). So it was (for me at least) get the big
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picture.
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Cheers,
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</PRE>
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