mirror of
https://gitlab.gnome.org/GNOME/gtk.git
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99 lines
2.4 KiB
C
99 lines
2.4 KiB
C
/* This file extracted from the GTK tutorial. */
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/* gettargets.c */
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#include <gtk/gtk.h>
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void selection_received (GtkWidget *widget,
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GtkSelectionData *selection_data,
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gpointer data);
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/* Signal handler invoked when user clicks on the "Get Targets" button */
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void
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get_targets (GtkWidget *widget, gpointer data)
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{
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static GdkAtom targets_atom = GDK_NONE;
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/* Get the atom corresonding to the string "TARGETS" */
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if (targets_atom == GDK_NONE)
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targets_atom = gdk_atom_intern ("TARGETS", FALSE);
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/* And request the "TARGETS" target for the primary selection */
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gtk_selection_convert (widget, GDK_SELECTION_PRIMARY, targets_atom,
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GDK_CURRENT_TIME);
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}
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/* Signal handler called when the selections owner returns the data */
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void
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selection_received (GtkWidget *widget, GtkSelectionData *selection_data,
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gpointer data)
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{
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GdkAtom *atoms;
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GList *item_list;
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int i;
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/* **** IMPORTANT **** Check to see if retrieval succeeded */
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if (selection_data->length < 0)
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{
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g_print ("Selection retrieval failed\n");
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return;
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}
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/* Make sure we got the data in the expected form */
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if (selection_data->type != GDK_SELECTION_TYPE_ATOM)
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{
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g_print ("Selection \"TARGETS\" was not returned as atoms!\n");
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return;
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}
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/* Print out the atoms we received */
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atoms = (GdkAtom *)selection_data->data;
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item_list = NULL;
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for (i=0; i<selection_data->length/sizeof(GdkAtom); i++)
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{
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char *name;
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name = gdk_atom_name (atoms[i]);
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if (name != NULL)
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g_print ("%s\n",name);
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else
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g_print ("(bad atom)\n");
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}
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return;
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}
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int
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main (int argc, char *argv[])
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{
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GtkWidget *window;
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GtkWidget *button;
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gtk_init (&argc, &argv);
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/* Create the toplevel window */
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window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
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gtk_window_set_title (GTK_WINDOW (window), "Event Box");
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gtk_container_border_width (GTK_CONTAINER (window), 10);
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gtk_signal_connect (GTK_OBJECT (window), "destroy",
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GTK_SIGNAL_FUNC (gtk_exit), NULL);
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/* Create a button the user can click to get targets */
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button = gtk_button_new_with_label ("Get Targets");
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gtk_container_add (GTK_CONTAINER (window), button);
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gtk_signal_connect (GTK_OBJECT(button), "clicked",
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GTK_SIGNAL_FUNC (get_targets), NULL);
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gtk_signal_connect (GTK_OBJECT(button), "selection_received",
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GTK_SIGNAL_FUNC (selection_received), NULL);
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gtk_widget_show (button);
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gtk_widget_show (window);
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gtk_main ();
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return 0;
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}
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