Bug#173071: Attempted to reproduce failed

[Justin Pryzby <justinpryzby@users.sourceforge.net>]

Attached is a gtk2 program which sets the "primary selection".  As
written, it should set the selection to be a string of "length" 6:
"\0\0\0\0\0\0".  Middle clicking in xterm does not cause anything to be
pasted, and it does not crash.  I recommend that this bug is closed.
(As an afterthought, I note that we're talking different graphics
libraries here: gtk and qt(kde)).
Justin

CFLAGS=-I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/pango-1.0 -I/usr/include/freetype2 -I/usr/X11R6/include -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include  -Wl,--export-dynamic -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgdk_pixbuf-2.0 -lm -lpangoxft-1.0 -lpangox-1.0 -lpango-1.0 -lgobject-2.0 -lgmodule-2.0 -ldl -lglib-2.0
CFLAGS+=-O3 -W
all: gtkcopy

// file:///usr/share/doc/libgtk2.0-doc/gtk-tutorial/x1893.html
#include <stdlib.h>
#include <gtk/gtk.h>
#include <time.h>
#include <string.h>

GtkWidget *selection_button;
GtkWidget *selection_widget;

/* Callback when the user toggles the selection */
static void selection_toggled(GtkWidget *widget,
		gint *have_selection)
{
	if (GTK_TOGGLE_BUTTON (widget)->active) {
		*have_selection = gtk_selection_owner_set (selection_widget,
				GDK_SELECTION_PRIMARY,
				GDK_CURRENT_TIME);
		/* if claiming the selection failed, we return the
		 * button to the out state */
		if (!*have_selection)
			gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (widget), FALSE);
	} else {
		if (*have_selection) {
			/* Before clearing the selection by setting the
			 * owner to NULL, we check if we are the actual
			 * owner
			 */
			if (gdk_selection_owner_get(GDK_SELECTION_PRIMARY) == widget->window)
				gtk_selection_owner_set (NULL, GDK_SELECTION_PRIMARY, GDK_CURRENT_TIME);
			*have_selection = FALSE;
		}
	}
}

/* Called when another application claims the selection */
static gboolean selection_clear(GtkWidget *widget, GdkEventSelection *event,
		gint *have_selection )
{
	*have_selection = FALSE;
	gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON (selection_button), FALSE);

	return TRUE;
}

/* Supplies the current time as the selection. */
static void selection_handle(GtkWidget *widget, 
		GtkSelectionData *selection_data,
		guint             info,
		guint             time_stamp,
		gpointer          data)
{
	gchar *timestr;
	time_t current_time;

	current_time = time(NULL);
	timestr = asctime (localtime (&current_time)); 
	/* When we return a single string, it should not be
	 * null terminated.  That will be done for us. */

	timestr="\0\0\0\0\0\0";
	gtk_selection_data_set(selection_data, GDK_SELECTION_TYPE_STRING,
			8, timestr, 6);
}

int main(int argc, char *argv[])
{
	GtkWidget *window;

	static int have_selection = FALSE;

	gtk_init (&argc, &argv);

	/* Create the toplevel window */
	window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
	gtk_window_set_title (GTK_WINDOW (window), "Event Box");
	gtk_container_set_border_width (GTK_CONTAINER (window), 10);

	g_signal_connect (G_OBJECT (window), "destroy",
			G_CALLBACK (exit), NULL);

	/* Create a toggle button to act as the
	 * selection */
	selection_widget = gtk_invisible_new ();
	selection_button = gtk_toggle_button_new_with_label ("Claim Selection");
	gtk_container_add (GTK_CONTAINER (window), selection_button);
	gtk_widget_show (selection_button);

	g_signal_connect (G_OBJECT (selection_button), "toggled",
			G_CALLBACK (selection_toggled), (gpointer) &have_selection);
	g_signal_connect (G_OBJECT (selection_widget), "selection_clear_event",
			G_CALLBACK (selection_clear), (gpointer) &have_selection);

	gtk_selection_add_target (selection_widget,
			GDK_SELECTION_PRIMARY,
			GDK_SELECTION_TYPE_STRING,
			1);
	g_signal_connect (G_OBJECT (selection_widget), "selection_get",
			G_CALLBACK (selection_handle), (gpointer) &have_selection);

	gtk_widget_show (selection_button);
	gtk_widget_show (window);

	gtk_main ();

	return 0;
}

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