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82f6ccd79c
2008-08-11 Sven Neumann <sven@gimp.org> * examples/*: updated the (quite outdated) examples to use canonical signal names as well. Removed some unneeded casts and trailing whitespace while I was on it... svn path=/trunk/; revision=21071
98 lines
2.6 KiB
C
98 lines
2.6 KiB
C
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#include <stdlib.h>
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#include <gtk/gtk.h>
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static 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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static void get_targets( GtkWidget *widget,
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gpointer data )
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{
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static GdkAtom targets_atom = GDK_NONE;
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GtkWidget *window = (GtkWidget *)data;
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/* Get the atom corresponding 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 (window, 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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static void selection_received( GtkWidget *widget,
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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 main( int argc,
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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_set_border_width (GTK_CONTAINER (window), 10);
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g_signal_connect (window, "destroy",
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G_CALLBACK (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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g_signal_connect (button, "clicked",
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G_CALLBACK (get_targets), (gpointer) window);
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g_signal_connect (window, "selection-received",
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G_CALLBACK (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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