Don't directly include GTK+ semi-public headers.

Only the main headers (e.g. gtk/gtk.h) should be included and GTK+ 3 is strict about this. Enable compile-time checks for this that work with GTK+ 2.24.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@67137 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gtk/assertdlg_gtk.h

@@ -14,8 +14,7 @@
 extern "C" {
 #endif /* __cplusplus */
 
-#include <gtk/gtkdialog.h>
-#include <gtk/gtklabel.h>
+#include <gtk/gtk.h>
 
 #define GTK_TYPE_ASSERT_DIALOG            (gtk_assert_dialog_get_type ())
 #define GTK_ASSERT_DIALOG(object)         (G_TYPE_CHECK_INSTANCE_CAST ((object), GTK_TYPE_ASSERT_DIALOG, GtkAssertDialog))

include/wx/gtk/private/messagetype.h

@@ -11,7 +11,7 @@
 #ifndef _GTK_PRIVATE_MSGTYPE_H_
 #define _GTK_PRIVATE_MSGTYPE_H_
 
-#include <gtk/gtkmessagedialog.h>
+#include <gtk/gtk.h>
 
 namespace wxGTKImpl
 {

include/wx/gtk/private/win_gtk.h

@@ -10,7 +10,7 @@
 #ifndef _WX_GTK_PIZZA_H_
 #define _WX_GTK_PIZZA_H_
 
-#include <gtk/gtkfixed.h>
+#include <gtk/gtk.h>
 
 #define WX_PIZZA(obj) G_TYPE_CHECK_INSTANCE_CAST(obj, wxPizza::type(), wxPizza)
 #define WX_IS_PIZZA(obj) G_TYPE_CHECK_INSTANCE_TYPE(obj, wxPizza::type())