[MonoDevelop] Threading issues
Luciano _
lnc19 at hotmail.com
Mon Feb 26 08:33:37 EST 2007
Hi. I guess you will need to read this:
http://www.mono-project.com/Responsive_Applications
The explanation: (As i understand it): Gtk works on its own thread, and all
the operation must be called from this thread, all the calls from other
thread could cause unpredictable behaviors.
The easy approach for your code is to use:
Gtk.Application.Invoke ( delegate
{
PBStatus.Fraction = 0.20;
});
Only a thought: I guess that you don't need other (second one) thread to
update your ProgressBar, The progress bar will be updated from the new
thread . I mean: You have the current thread, and you call the second thread
to Perform your operations and this thread will update your applications.
If you wish an example, i used in my own app.
Is called from here:
http://gcomandos.svn.sourceforge.net/viewvc/gcomandos/trunk/gComandos/gComandos/ui/windows/FindFiles.cs?revision=81&view=markup
And the object that make the operations is here:
http://gcomandos.svn.sourceforge.net/viewvc/gcomandos/trunk/gComandos/gComandos/fs/Search.cs?revision=64&view=markup
>From: "Neil Munro" <neilmunro at gmail.com>
>To: monodevelop-list at lists.ximian.com
>Subject: [MonoDevelop] Threading issues
>Date: Fri, 23 Feb 2007 22:47:14 +0000
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>
>Hi, I posted here a while back about a progress bar issue I had, to be told
>I needed to learn about threading to make it work, I am learning from Mono:
>Kick start and Mono: A Developers guide and both have a bit about threading
>but I still cannot seem to get it right. It is still regarding how to get a
>progress bar to work but I seem to have trouble with threads any help would
>be appreciated.
>
>This is the code i have written so far
>
> Thread thread;
>
> ThreadStart download = new ThreadStart ( vDownload );
> thread = new Thread ( download );
> thread.Start ( );
>
> ThreadStart apb = new ThreadStart ( AdjustProgressBar1 );
> thread = new Thread ( apb );
> thread.Start ( );
>
> protected void AdjustProgressBar1 ( )
> {
> PBStatus.Fraction = 0.20;
> }
>
>protected virtual void vDownload()
> {
> try
> {
> StreamWriter GenerateScript = new StreamWriter ( "download.sh"
>);
> GenerateScript.WriteLine ( "#!/bin/bash" );
> GenerateScript.WriteLine ( "mkdir temp" );
> GenerateScript.WriteLine ( "cd temp" );
> GenerateScript.WriteLine ( "wget {0}", ENURL.Text );
> GenerateScript.Close ( );
>
> ProcessStartInfo ExeScript = new ProcessStartInfo ( );
> ExeScript.FileName = "chmod";
> ExeScript.Arguments = "+x download.sh";
> Process process = Process.Start ( ExeScript );
> process.WaitForExit ( );
> process.Close ( );
>
> ProcessStartInfo RunScript = new ProcessStartInfo ( );
> RunScript.FileName = "sh";
> RunScript.Arguments = "download.sh";
> Process process2 = Process.Start ( RunScript );
> process2.WaitForExit ( );
> process2.Close ( );
> }
>
> catch (Exception ex)
> {
> ENInfo.Text = ex.Message;
> }
>
> /*finally
> {
> PBStatus.Fraction = 0.20;
> }*/
> }
>
>Neil Munro
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