Hello all,
In an image processing application, I have a set of Radio buttons toselect the method to process my image.This works fine.As processes are long, I have added a GtkProgressBar. But now, the Radiobuttons are not updated according to my selection. During the process,the GUI is blocked except the progress bar using gtk_grab_add().If I don't block the GUI, the Radio buttons are of course correctlyupdated. But preventing other GUI modifications during process ismandatory for me.
I tried to add "while (gtk_events_pending()) gtk_main_iteration();" atdifferent positions in the callback function before launching theprocess but it does not change anything.
Any idea on how to make these buttons to updated according to theselection ?
Here is the skeleton of the application :
/* Progress_bar.c : 3 functions to initialize, update and reset theGtkProgressBar */int progressbar_init(GtkWidget *main_window){ /* pbar is declared global */ pbar = lookup_widget(main_window, "progressbar"); if (pbar == NULL) return 0;
gtk_grab_add(pbar); gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(pbar), 0.0); while (gtk_events_pending()) gtk_main_iteration();
return 1;}
void progressbar_update(gdouble percent){ gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(pbar), percent); while (gtk_events_pending()) gtk_main_iteration();}
void progressbar_reset(void){ gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(pbar), 0.0); while (gtk_events_pending()) gtk_main_iteration(); gtk_grab_remove(pbar);}
/* Callback_for_process.c */void on_method1_radio_button_pressed(GtkButton *button, gpointeruser_data){ [...] progressbar_init(main_window); for (i=0; i<nb_pixels; i++) /* inner process */ { [...] progressbar_update((gdouble) i / nb_pixels); } progessbar_reset();}
Kind regards,-- Stéphane Albine-mail: stephane point albin chez free point frwww: http://stephane.albin.free.fr
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