diff --git a/src/common/wincmn.cpp b/src/common/wincmn.cpp
index 81eb2b5761..1222e79ce3 100644
--- a/src/common/wincmn.cpp
+++ b/src/common/wincmn.cpp
@@ -82,6 +82,19 @@
     #include "wx/sysopt.h"
 #endif
 
+// For reporting compile- and runtime version of GTK+ in the ctrl+alt+mclick dialog.
+// The gtk includes donn't pull any other header in, at least not on my system - MR
+#ifdef __WXGTK__
+    #ifdef __WXGTK20__
+        #include <gtk/gtkversion.h>
+    #else
+        #include <gtk/gtkfeatures.h>
+    #endif
+    extern const unsigned int gtk_major_version;
+    extern const unsigned int gtk_minor_version;
+    extern const unsigned int gtk_micro_version;
+#endif
+
 // ----------------------------------------------------------------------------
 // static data
 // ----------------------------------------------------------------------------
@@ -2280,7 +2293,7 @@ void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
 
         wxMessageBox(wxString::Format(
                                       _T(
-                                        "       wxWidgets Library (%s port)\nVersion %d.%d.%d%s%s, compiled at %s %s\n   Copyright (c) 1995-2005 wxWidgets team"
+                                        "       wxWidgets Library (%s port)\nVersion %d.%d.%d%s%s, compiled at %s %s%s\n   Copyright (c) 1995-2005 wxWidgets team"
                                         ),
                                       port.c_str(),
                                       wxMAJOR_VERSION,
@@ -2297,7 +2310,12 @@ void wxWindowBase::OnMiddleClick( wxMouseEvent& event )
                                       wxEmptyString,
 #endif
                                       __TDATE__,
-                                      __TTIME__
+                                      __TTIME__,
+#ifdef __WXGTK__
+                                      wxString::Format(_T("\nagainst GTK+ %d.%d.%d. Runtime GTK+ version: %d.%d.%d"), GTK_MAJOR_VERSION, GTK_MINOR_VERSION, GTK_MICRO_VERSION, gtk_major_version, gtk_minor_version, gtk_micro_version).c_str()
+#else
+                                      ""
+#endif
                                      ),
                      _T("wxWidgets information"),
                      wxICON_INFORMATION | wxOK,