# ScrolledWindow (C)

Monica Kochofar
monicakochofar@gmail.com 2012
Adds scrollbars to its child widget
Mario Blättermann
mario.blaettermann@gmail.com 2011, 2013, 2016, 2018, 2021

# ScrolledWindow

An image in a scrolled window.

#include <gtk/gtk.h>

static void activate (GtkApplication *app, gpointer user_data) { /* Declare variables */ GtkWidget *window; GtkWidget *scrolled_window; GtkWidget *image;

/* Create a window with a title, and a default size */ window = gtk_application_window_new (app); gtk_window_set_title (GTK_WINDOW (window), "ScrolledWindow Example"); gtk_window_set_default_size (GTK_WINDOW (window), 220, 200);

/* Create the scrolled window. Usually NULL is passed for both parameters so * that it creates the horizontal/vertical adjustments automatically. Setting * the scrollbar policy to automatic allows the scrollbars to only show up * when needed. */ scrolled_window = gtk_scrolled_window_new (NULL, NULL); /* Set the border width */ gtk_container_set_border_width (GTK_CONTAINER (scrolled_window), 10); /* Extract our desired image from a file that we have */ image = gtk_image_new_from_file ("gnome-image.png"); /* And add it to the scrolled window */ gtk_container_add (GTK_CONTAINER (scrolled_window), image); /* Set the policy of the horizontal and vertical scrollbars to automatic. * What this means is that the scrollbars are only present if needed. */ gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);

gtk_container_add (GTK_CONTAINER (window), scrolled_window);

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 diesem Beispiel haben wir Folgendes verwendet:

GtkApplication

GtkWindow

GtkScrolledWindow

GtkPolicyType