[GTK3] GtkEntry, why "focus-in-event" does not work ?

[Gilles DOFFE <g doffe gmail com>]

Hello,

Below a simple application with a GtkButton and a GtkEntry.
Two callbacks associated to this widgets following this rules :
1) When I click on the GtkButton, it should display the GtkEntry pointer
value.
2) When I focus on the GtkEntry, it should display the GtkButton pointer
value.

Case 1) works perfectly but case 2) always give a different value for the
GtkButton pointer ?!

Did i miss something ?

Thanks,
Gilles

#include <gtk/gtk.h>

void
onEntryFocusIn(GtkWidget *entry, gpointer pData)
{
    printf("pData   = %p\n", (GtkWidget *)pData);
}

int main(int argc, char **argv)
{
    GtkWidget *pWindow = NULL;
    GtkWidget *pButton = NULL;
    GtkWidget *pEntry = NULL;
    GtkWidget *pHbx = NULL;

    gtk_init(NULL, NULL);

    pWindow = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    pButton = gtk_button_new();
    pEntry = gtk_entry_new();
    pHbx = gtk_hbox_new(FALSE, FALSE);

    gtk_box_pack_start(GTK_BOX(pHbx), GTK_WIDGET(pButton), FALSE, FALSE, 0);
    gtk_box_pack_start(GTK_BOX(pHbx), GTK_WIDGET(pEntry), FALSE, FALSE, 0);

    gtk_container_add(pWindow, pHbx);

    g_signal_connect(G_OBJECT(pWindow), "destroy", (GCallback)
gtk_main_quit, NULL);

    /* THIS WORKS : */
    g_signal_connect(G_OBJECT(pButton), "clicked", (GCallback)
onEntryFocusIn, (gpointer)pEntry);

    /* THIS DOES NOT WORK : */
    g_signal_connect(G_OBJECT(pEntry), "focus-in-event", (GCallback)
onEntryFocusIn, (gpointer)pButton);

    gtk_widget_show_all(pWindow);

    printf("pEntry  = %p\n", pEntry);
    printf("pButton = %p\n", pButton);

    gtk_main();
}