--- /dev/null
+/* gcc -g -Wall -O2 -o dialog-test dialog-test.c `pkg-config --cflags --libs gtk+-3.0` */
+#include <gtk/gtk.h>
+
+static GtkWidget *window;
+static GtkWidget *width_chars_spin;
+static GtkWidget *default_width_spin;
+static GtkWidget *default_height_spin;
+static GtkWidget *resizable_check;
+
+static void
+show_dialog (void)
+{
+ GtkWidget *dialog;
+ GtkWidget *label;
+ gint width_chars, default_width, default_height;
+ gboolean resizable;
+
+ width_chars = gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (width_chars_spin));
+ default_width = gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (default_width_spin));
+ default_height = gtk_spin_button_get_value_as_int (GTK_SPIN_BUTTON (default_height_spin));
+ resizable = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (resizable_check));
+
+ dialog = gtk_dialog_new_with_buttons ("Test", GTK_WINDOW (window),
+ GTK_DIALOG_MODAL,
+ GTK_STOCK_CLOSE, GTK_RESPONSE_CANCEL,
+ NULL);
+
+ label = gtk_label_new ("Lorem ipsum dolor sit amet, consectetur adipiscing elit. "
+ "Nulla innn urna ac dui malesuada ornare. Nullam dictum "
+ "tempor mi et tincidunt. Aliquam metus nulla, auctor "
+ "vitae pulvinar nec, egestas at mi. Class aptent taciti "
+ "sociosqu ad litora torquent per conubia nostra, per "
+ "inceptos himenaeos. Aliquam sagittis, tellus congue "
+ "cursus congue, diam massa mollis enim, sit amet gravida "
+ "magna turpis egestas sapien. Aenean vel molestie nunc. "
+ "In hac habitasse platea dictumst. Suspendisse lacinia"
+ "mi eu ipsum vestibulum in venenatis enim commodo. "
+ "Vivamus non malesuada ligula.");
+
+ gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
+ gtk_label_set_width_chars (GTK_LABEL (label), width_chars);
+ gtk_window_set_default_size (GTK_WINDOW (dialog), default_width, default_height);
+ gtk_window_set_resizable (GTK_WINDOW (dialog), resizable);
+
+ gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
+ label, 0, TRUE, TRUE);
+
+ gtk_widget_show (label);
+
+ gtk_dialog_run (GTK_DIALOG (dialog));
+
+ gtk_widget_destroy (dialog);
+}
+
+static void
+create_window (void)
+{
+ GtkWidget *grid;
+ GtkWidget *label;
+ GtkWidget *button;
+
+ window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+ gtk_window_set_title (GTK_WINDOW (window), "Window size");
+ gtk_container_set_border_width (GTK_CONTAINER (window), 12);
+ gtk_window_set_resizable (GTK_WINDOW (window), FALSE);
+
+ grid = gtk_grid_new ();
+ gtk_grid_set_row_spacing (GTK_GRID (grid), 12);
+ gtk_grid_set_column_spacing (GTK_GRID (grid), 12);
+ gtk_container_add (GTK_CONTAINER (window), grid);
+
+ label = gtk_label_new ("Width chars");
+ gtk_widget_set_halign (label, GTK_ALIGN_START);
+ width_chars_spin = gtk_spin_button_new_with_range (-1, 1000, 1);
+ gtk_widget_set_halign (width_chars_spin, GTK_ALIGN_START);
+
+ gtk_grid_attach (GTK_GRID (grid), label, 0, 0, 1, 1);
+ gtk_grid_attach (GTK_GRID (grid), width_chars_spin, 1, 0, 1, 1);
+
+ label = gtk_label_new ("Default size");
+ gtk_widget_set_halign (label, GTK_ALIGN_START);
+ default_width_spin = gtk_spin_button_new_with_range (-1, 1000, 1);
+ gtk_widget_set_halign (default_width_spin, GTK_ALIGN_START);
+ default_height_spin = gtk_spin_button_new_with_range (-1, 1000, 1);
+ gtk_widget_set_halign (default_height_spin, GTK_ALIGN_START);
+
+ gtk_grid_attach (GTK_GRID (grid), label, 0, 1, 1, 1);
+ gtk_grid_attach (GTK_GRID (grid), default_width_spin, 1, 1, 1, 1);
+ gtk_grid_attach (GTK_GRID (grid), default_height_spin, 2, 1, 1, 1);
+
+ label = gtk_label_new ("Resizable");
+ gtk_widget_set_halign (label, GTK_ALIGN_START);
+ resizable_check = gtk_check_button_new ();
+ gtk_widget_set_halign (resizable_check, GTK_ALIGN_START);
+
+ gtk_grid_attach (GTK_GRID (grid), label, 0, 2, 1, 1);
+ gtk_grid_attach (GTK_GRID (grid), resizable_check, 1, 2, 1, 1);
+
+ button = gtk_button_new_with_label ("Show");
+ g_signal_connect (button, "clicked", G_CALLBACK (show_dialog), NULL);
+ gtk_grid_attach (GTK_GRID (grid), button, 2, 3, 1, 1);
+
+ gtk_widget_show_all (window);
+}
+
+int
+main (int argc, char *argv[])
+{
+ gtk_init (NULL, NULL);
+
+ create_window ();
+
+ gtk_main ();
+
+ return 0;
+}