Use g_signal* instead of deprecated gtk_signal*. Use proper casts for the arguments.

Worth norting from the GTK+ docs: "For future usage, direct use of the GSignal API is recommended, this avoids
significant performance hits where GtkArg structures have to be converted into GValues."


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@37061 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/checkbox.cpp

@@ -161,10 +161,8 @@ bool wxCheckBox::Create(wxWindow *parent,
     }
     SetLabel( label );
 
-    gtk_signal_connect( GTK_OBJECT(m_widgetCheckbox),
-                        "toggled",
-                        GTK_SIGNAL_FUNC(gtk_checkbox_toggled_callback),
-                        (gpointer *)this );
+    g_signal_connect (m_widgetCheckbox, "toggled",
+                      G_CALLBACK (gtk_checkbox_toggled_callback), this);
 
     m_parent->DoAddChild( this );