This ProgressBar "fills in" by a fraction of the bar until it is full.
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#include <gtk/gtk.h> static gboolean fill (gpointer user_data) { GtkWidget *progress_bar = user_data; /*Get the current progress*/ gdouble fraction; fraction = gtk_progress_bar_get_fraction (GTK_PROGRESS_BAR (progress_bar)); /*Increase the bar by 10% each time this function is called*/ fraction += 0.1; /*Fill in the bar with the new fraction*/ gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (progress_bar), fraction); /*Ensures that the fraction stays below 1.0*/ if (fraction < 1.0) return TRUE; return FALSE; } static void activate (GtkApplication *app, gpointer user_data) { GtkWidget *window; GtkWidget *progress_bar; gdouble fraction = 0.0; /*Create a window with a title, and a default size*/ window = gtk_application_window_new (app); gtk_window_set_title (GTK_WINDOW (window), "ProgressBar Example"); gtk_window_set_default_size (GTK_WINDOW (window), 220, 20); /*Create a progressbar and add it to the window*/ progress_bar = gtk_progress_bar_new (); gtk_container_add (GTK_CONTAINER (window), progress_bar); /*Fill in the given fraction of the bar. Has to be between 0.0-1.0 inclusive*/ gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (progress_bar), fraction); /*Use the created fill function every 500 milliseconds*/ g_timeout_add (500, fill, GTK_PROGRESS_BAR (progress_bar)); gtk_widget_show_all (window); } int main (int argc, char **argv) { GtkApplication *app; int status; app = gtk_application_new ("org.gtk.example", G_APPLICATION_FLAGS_NONE); g_signal_connect (app, "activate", G_CALLBACK (activate), NULL); status = g_application_run (G_APPLICATION (app), argc, argv); g_object_unref (app); return status; }
In this sample we used the following:
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