Re: I cannnot update progressbar..

[Andreas Scherf <scherfa fh-trier de>]

Naoko Shimakawa wrote:
> 
> Hello.
> I was starting gtk 2weeks ago so I'm beginer.
> And I'm sorry my poor English.
> 
> I'm trying updating progressbar. But it is not success.
> FAQ says "use while( gtk_main_iteration() );".
> I try it and I read archives of mailing list.
> But I cannot find my mistake.
> 
> Please teach me something wrong...
> Calling this function, the dialog is appeared.
> But label and progress bar show after for loop finished.
> 
> -----------------------------------------------------------------
> void progressbar_test()
> {
>     GtkWidget       *dlg;
>     GtkWidget       *vbox;
>     GtkWidget       *lbl;
>     GtkWidget       *pbar;
>     int             val;
>     gfloat          gflt;
>     char    buf[MAX_BUF];
> 
>     //create dlg
>     dlg = gtk_dialog_new();
>     gtk_window_set_title( GTK_WINDOW( dlg ), "ProgressBar" );
>     gtk_widget_set_usize( dlg, 200, 100 );
>     vbox = GTK_DIALOG( dlg )->vbox;
> 
>     //create lbl
>     lbl = gtk_label_new( "progressbar!" );
>     gtk_box_pack_start( GTK_BOX(vbox), lbl, TRUE, TRUE, 1 );
>     gtk_widget_show( lbl );
> 
>     //progress bar
>     pbar = gtk_progress_bar_new();
>     gtk_box_pack_start( GTK_BOX( GTK_DIALOG( dlg )->action_area ),
>                          pbar, TRUE, TRUE, 2 );
>     gtk_progress_set_format_string( GTK_PROGRESS( pbar ), "%p%%" );
>     gtk_widget_show( pbar );
> 
>     //show dialog
>     gdk_threads_enter();
>     gtk_widget_show( dlg );
>     gdk_threads_leave();
> 
>     //update progress bar
>     for( gflt=0; gflt<=1;  ){
>         gtk_progress_bar_update( (GtkProgressBar*)pbar, gflt );
>         gflt += 0.1;
>         sleep(1);
>         if ( gflt > 1 ) break;
>         //update?
>         while( gtk_main_iteration() );
It must be (for example):
gtk_progress_set_value (GTK_PROGRESS (progressbar), progress_adj);
      while (gtk_events_pending ())
	gtk_main_iteration ();
 
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