Correct mouse event coordinates in wxMSW wxUIActionSimulator.

[wxWidgets.git] / src / gtk / utilsgtk.cpp

diff --git a/src/gtk/utilsgtk.cpp b/src/gtk/utilsgtk.cpp
index f9c83e3166ac6eb56ceee38c827e0f3dd398e901..0d1add821a5f4df361239cfc164b12d5bda2eb89 100644 (file)
--- a/src/gtk/utilsgtk.cpp
+++ b/src/gtk/utilsgtk.cpp
@@ -19,45 +19,40 @@
 #endif
 
 #include "wx/apptrait.h"
 #endif
 
 #include "wx/apptrait.h"

-

 #include "wx/process.h"
 #include "wx/process.h"

-
+#include "wx/sysopt.h"

 #include "wx/unix/execute.h"
 
 #include "wx/unix/execute.h"
 

-#ifdef __WXDEBUG__
+#include "wx/gtk/private/timer.h"
+#include "wx/evtloop.h"
+
+#include <gtk/gtk.h>
+#ifdef GDK_WINDOWING_WIN32
+#include <gdk/gdkwin32.h>
+#endif
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+
+#if wxDEBUG_LEVEL

     #include "wx/gtk/assertdlg_gtk.h"
     #if wxUSE_STACKWALKER
         #include "wx/stackwalk.h"
     #endif // wxUSE_STACKWALKER
     #include "wx/gtk/assertdlg_gtk.h"
     #if wxUSE_STACKWALKER
         #include "wx/stackwalk.h"
     #endif // wxUSE_STACKWALKER

-#endif // __WXDEBUG__
+#endif // wxDEBUG_LEVEL

 
 #include <stdarg.h>
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 
 #include <stdarg.h>
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/types.h>

-#include <sys/wait.h>   // for WNOHANG
+#ifdef __UNIX__

 #include <unistd.h>
 #include <unistd.h>

-
-#include "glib.h"
-#include "gdk/gdk.h"
-#include "gtk/gtk.h"
-#include "gdk/gdkx.h"
-
-#ifdef HAVE_X11_XKBLIB_H
-    /* under HP-UX and Solaris 2.6, at least, XKBlib.h defines structures with
-     * field named "explicit" - which is, of course, an error for a C++
-     * compiler. To be on the safe side, just redefine it everywhere. */
-    #define explicit __wx_explicit
-
-    #include "X11/XKBlib.h"
-
-    #undef explicit
-#endif // HAVE_X11_XKBLIB_H
-
+#endif

 
 #if wxUSE_DETECT_SM
 
 #if wxUSE_DETECT_SM

-    #include "X11/Xlib.h"
-    #include "X11/SM/SMlib.h"
+    #include <X11/SM/SMlib.h>
+
+    #include "wx/unix/utilsx11.h"

 #endif
 
 //-----------------------------------------------------------------------------
 #endif
 
 //-----------------------------------------------------------------------------


@@ -78,57 +73,6 @@ void wxBell()
 }
 #endif
 
 }
 #endif
 

-/* Don't synthesize KeyUp events holding down a key and producing
-   KeyDown events with autorepeat. */
-#ifdef HAVE_X11_XKBLIB_H
-bool wxSetDetectableAutoRepeat( bool flag )
-{
-    Bool result;
-    XkbSetDetectableAutoRepeat( GDK_DISPLAY(), flag, &result );
-    return result;       /* true if keyboard hardware supports this mode */
-}
-#else
-bool wxSetDetectableAutoRepeat( bool WXUNUSED(flag) )
-{
-    return false;
-}
-#endif
-
-// Escapes string so that it is valid Pango markup XML string:
-wxString wxEscapeStringForPangoMarkup(const wxString& str)
-{
-    size_t len = str.length();
-    wxString out;
-    out.Alloc(len);
-    for (size_t i = 0; i < len; i++)
-    {
-        wxChar c = str[i];
-        switch (c)
-        {
-            case _T('&'):
-                out << _T("&amp;");
-                break;
-            case _T('<'):
-                out << _T("&lt;");
-                break;
-            case _T('>'):
-                out << _T("&gt;");
-                break;
-            case _T('\''):
-                out << _T("&apos;");
-                break;
-            case _T('"'):
-                out << _T("&quot;");
-                break;
-            default:
-                out << c;
-                break;
-        }
-    }
-    return out;
-}
-
-

 // ----------------------------------------------------------------------------
 // display characterstics
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // display characterstics
 // ----------------------------------------------------------------------------


@@ -150,20 +94,9 @@ void wxDisplaySizeMM( int *width, int *height )
     if (height) *height = gdk_screen_height_mm();
 }
 
     if (height) *height = gdk_screen_height_mm();
 }
 

-void wxClientDisplayRect(int *x, int *y, int *width, int *height)
-{
-    // This is supposed to return desktop dimensions minus any window
-    // manager panels, menus, taskbars, etc.  If there is a way to do that
-    // for this platform please fix this function, otherwise it defaults
-    // to the entire desktop.
-    if (x) *x = 0;
-    if (y) *y = 0;
-    wxDisplaySize(width, height);
-}
-

 void wxGetMousePosition( int* x, int* y )
 {
 void wxGetMousePosition( int* x, int* y )
 {

-    gdk_window_get_pointer( (GdkWindow*) NULL, x, y, (GdkModifierType*) NULL );
+    gdk_window_get_pointer(gtk_widget_get_root_window(wxGetRootWindow()), x, y, NULL);

 }
 
 bool wxColourDisplay()
 }
 
 bool wxColourDisplay()


@@ -173,7 +106,7 @@ bool wxColourDisplay()
 
 int wxDisplayDepth()
 {
 
 int wxDisplayDepth()
 {

-    return gdk_drawable_get_visual( wxGetRootWindow()->window )->depth;
+    return gtk_widget_get_visual(wxGetRootWindow())->depth;

 }
 
 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
 }
 
 wxWindow* wxFindWindowAtPoint(const wxPoint& pt)


@@ -183,102 +116,104 @@ wxWindow* wxFindWindowAtPoint(const wxPoint& pt)
 
 #if !wxUSE_UNICODE
 
 
 #if !wxUSE_UNICODE
 

-wxCharBuffer wxConvertToGTK(const wxString& s, wxFontEncoding enc)
+WXDLLIMPEXP_CORE wxCharBuffer
+wxConvertToGTK(const wxString& s, wxFontEncoding enc)

 {
 {

-    wxCharBuffer buf;
-    if ( enc == wxFONTENCODING_UTF8 )
+    wxWCharBuffer wbuf;
+    if ( enc == wxFONTENCODING_SYSTEM || enc == wxFONTENCODING_DEFAULT )

     {
     {

-        // no need for conversion at all, but do check that we have a valid
-        // UTF-8 string because passing invalid UTF-8 to GTK+ is going to
-        // result in a GTK+ error message and, especially, loss of data which
-        // was supposed to be shown in the GUI
-        if ( wxConvUTF8.ToWChar(NULL, 0, s, s.length()) == wxCONV_FAILED )
-        {
-            // warn the programmer that something is probably wrong in his code
-            //
-            // NB: don't include the string in output because chances are that
-            //     this invalid UTF-8 string could result in more errors itself
-            //     if the application shows logs in the GUI and so we get into
-            //     an infinite loop
-            wxLogDebug(_T("Invalid UTF-8 string in wxConvertToGTK()"));
-
-            // but still try to show at least something on the screen
-            wxMBConvUTF8 utf8permissive(wxMBConvUTF8::MAP_INVALID_UTF8_TO_OCTAL);
-            wxWCharBuffer wbuf(utf8permissive.cMB2WC(s));
-            buf = wxConvUTF8.cWC2MB(wbuf);
-        }
-        else // valid UTF-8 string, no need to convert
-        {
-            buf = wxCharBuffer(s);
-        }
+        wbuf = wxConvUI->cMB2WC(s.c_str());

     }
     }

-    else // !UTF-8
+    else // another encoding, use generic conversion class

     {
     {

-        wxWCharBuffer wbuf;
-        if ( enc == wxFONTENCODING_SYSTEM || enc == wxFONTENCODING_DEFAULT )
-        {
-            wbuf = wxConvUI->cMB2WC(s);
-        }
-        else // another encoding, use generic conversion class
-        {
-            wbuf = wxCSConv(enc).cMB2WC(s);
-        }
+        wbuf = wxCSConv(enc).cMB2WC(s.c_str());
+    }

 
 

-        if ( wbuf )
-            buf = wxConvUTF8.cWC2MB(wbuf);
+    if ( !wbuf && !s.empty() )
+    {
+        // conversion failed, but we still want to show something to the user
+        // even if it's going to be wrong it is better than nothing
+        //
+        // we choose ISO8859-1 here arbitrarily, it's just the most common
+        // encoding probably and, also importantly here, conversion from it
+        // never fails as it's done internally by wxCSConv
+        wbuf = wxCSConv(wxFONTENCODING_ISO8859_1).cMB2WC(s.c_str());

     }
 
     }
 

-    return buf;
+    return wxConvUTF8.cWC2MB(wbuf);
+}
+
+WXDLLIMPEXP_CORE wxCharBuffer
+wxConvertFromGTK(const wxString& s, wxFontEncoding enc)
+{
+    // this conversion should never fail as GTK+ always uses UTF-8 internally
+    // so there are no complications here
+    const wxWCharBuffer wbuf(wxConvUTF8.cMB2WC(s.c_str()));
+    if ( enc == wxFONTENCODING_SYSTEM )
+        return wxConvUI->cWC2MB(wbuf);
+
+    return wxCSConv(enc).cWC2MB(wbuf);

 }
 
 #endif // !wxUSE_UNICODE
 
 }
 
 #endif // !wxUSE_UNICODE
 

+// Returns NULL if version is certainly greater or equal than major.minor.micro
+// Returns string describing the error if version is lower than
+// major.minor.micro OR it cannot be determined and one should not rely on the
+// availability of pango version major.minor.micro, nor the non-availability
+const gchar *wx_pango_version_check (int major, int minor, int micro)
+{
+    // NOTE: you don't need to use this macro to check for Pango features
+    //       added in pango-1.4 or earlier since GTK 2.4 (our minimum requirement
+    //       for GTK lib) required pango 1.4...
+
+#ifdef PANGO_VERSION_MAJOR
+    if (!gtk_check_version (2,11,0))
+    {
+        // GTK+ 2.11 requires Pango >= 1.15.3 and pango_version_check
+        // was added in Pango 1.15.2 thus we know for sure the pango lib we're
+        // using has the pango_version_check function:
+        return pango_version_check (major, minor, micro);
+    }
+
+    return "can't check";
+#else // !PANGO_VERSION_MAJOR
+    wxUnusedVar(major);
+    wxUnusedVar(minor);
+    wxUnusedVar(micro);
+
+    return "too old headers";
+#endif
+}
+
+

 // ----------------------------------------------------------------------------
 // subprocess routines
 // ----------------------------------------------------------------------------
 
 extern "C" {
 // ----------------------------------------------------------------------------
 // subprocess routines
 // ----------------------------------------------------------------------------
 
 extern "C" {

-static
-void GTK_EndProcessDetector(gpointer data, gint source,
-                            GdkInputCondition WXUNUSED(condition) )
+static gboolean EndProcessDetector(GIOChannel* source, GIOCondition, void* data)

 {
 {

-   wxEndProcessData *proc_data = (wxEndProcessData *)data;
+    wxEndProcessData * const
+        proc_data = static_cast<wxEndProcessData *>(data);

 
 

-   // has the process really terminated? unfortunately GDK (or GLib) seem to
-   // generate G_IO_HUP notification even when it simply tries to read from a
-   // closed fd and hasn't terminated at all
-   int pid = (proc_data->pid > 0) ? proc_data->pid : -(proc_data->pid);
-   int status = 0;
-   int rc = waitpid(pid, &status, WNOHANG);
+    // child exited, end waiting
+    close(g_io_channel_unix_get_fd(source));

 
 

-   if ( rc == 0 )
-   {
-       // no, it didn't exit yet, continue waiting
-       return;
-   }
+    wxHandleProcessTermination(proc_data);

 
 

-   // set exit code to -1 if something bad happened
-   proc_data->exitcode = rc != -1 && WIFEXITED(status) ? WEXITSTATUS(status)
-                                                      : -1;
-
-   // child exited, end waiting
-   close(source);
-
-   // don't call us again!
-   gdk_input_remove(proc_data->tag);
-
-   wxHandleProcessTermination(proc_data);
+    // don't call us again!
+    return false;

 }
 }
 
 }
 }
 

-int wxAddProcessCallback(wxEndProcessData *proc_data, int fd)
+int wxGUIAppTraits::AddProcessCallback(wxEndProcessData *proc_data, int fd)

 {
 {

-    int tag = gdk_input_add(fd,
-                            GDK_INPUT_READ,
-                            GTK_EndProcessDetector,
-                            (gpointer)proc_data);
-
-    return tag;
+    GIOChannel* channel = g_io_channel_unix_new(fd);
+    GIOCondition cond = GIOCondition(G_IO_IN | G_IO_HUP | G_IO_ERR);
+    unsigned id = g_io_add_watch(channel, cond, EndProcessDetector, proc_data);
+    g_io_channel_unref(channel);
+    return int(id);

 }
 
 
 }
 
 


@@ -297,32 +232,35 @@ wxPortId wxGUIAppTraits::GetToolkitVersion(int *verMaj, int *verMin) const
     return wxPORT_GTK;
 }
 
     return wxPORT_GTK;
 }
 

-#if wxUSE_DETECT_SM
-static wxString GetSM()
+#if wxUSE_TIMER
+
+wxTimerImpl *wxGUIAppTraits::CreateTimerImpl(wxTimer *timer)

 {
 {

-    class Dpy
-    {
-    public:
-        Dpy() { m_dpy = XOpenDisplay(NULL); }
-        ~Dpy() { if ( m_dpy ) XCloseDisplay(m_dpy); }
+    return new wxGTKTimerImpl(timer);
+}

 
 

-        operator Display *() const { return m_dpy; }
-    private:
-        Display *m_dpy;
-    } dpy;
+#endif // wxUSE_TIMER

 
 

+#if wxUSE_DETECT_SM
+static wxString GetSM()
+{
+    wxX11Display dpy;

     if ( !dpy )
         return wxEmptyString;
 
     if ( !dpy )
         return wxEmptyString;
 

+    char smerr[256];

     char *client_id;
     SmcConn smc_conn = SmcOpenConnection(NULL, NULL,
                                          999, 999,
                                          0 /* mask */, NULL /* callbacks */,
                                          NULL, &client_id,
     char *client_id;
     SmcConn smc_conn = SmcOpenConnection(NULL, NULL,
                                          999, 999,
                                          0 /* mask */, NULL /* callbacks */,
                                          NULL, &client_id,

-                                         0, NULL);
+                                         WXSIZEOF(smerr), smerr);

 
     if ( !smc_conn )
 
     if ( !smc_conn )

+    {
+        wxLogDebug("Failed to connect to session manager: %s", smerr);

         return wxEmptyString;
         return wxEmptyString;

+    }

 
     char *vendor = SmcVendor(smc_conn);
     wxString ret = wxString::FromAscii( vendor );
 
     char *vendor = SmcVendor(smc_conn);
     wxString ret = wxString::FromAscii( vendor );


@@ -340,9 +278,21 @@ static wxString GetSM()
 // wxGUIAppTraits
 //-----------------------------------------------------------------------------
 
 // wxGUIAppTraits
 //-----------------------------------------------------------------------------
 

-#ifdef __WXDEBUG__
+wxEventLoopBase *wxGUIAppTraits::CreateEventLoop()
+{
+    return new wxEventLoop();
+}
+

 
 

-#if wxUSE_STACKWALKER
+#if wxUSE_INTL
+void wxGUIAppTraits::SetLocale()
+{
+    gtk_set_locale();
+    wxUpdateLocaleIsUtf8();
+}
+#endif
+
+#if wxDEBUG_LEVEL && wxUSE_STACKWALKER

 
 // private helper class
 class StackDump : public wxStackWalker
 
 // private helper class
 class StackDump : public wxStackWalker


@@ -381,81 +331,183 @@ private:
     GtkAssertDialog *m_dlg;
 };
 
     GtkAssertDialog *m_dlg;
 };
 

-// the callback functions must be extern "C" to comply with GTK+ declarations
-extern "C"
+static void get_stackframe_callback(void* p)

 {
 {

-    void get_stackframe_callback(StackDump *dump)
-    {
-        // skip over frames up to including wxOnAssert()
-        dump->ProcessFrames(3);
-    }
+    StackDump* dump = static_cast<StackDump*>(p);
+    // skip over frames up to including wxOnAssert()
+    dump->ProcessFrames(3);

 }
 
 }
 

-#endif      // wxUSE_STACKWALKER
+#endif // wxDEBUG_LEVEL && wxUSE_STACKWALKER

 
 bool wxGUIAppTraits::ShowAssertDialog(const wxString& msg)
 {
 
 bool wxGUIAppTraits::ShowAssertDialog(const wxString& msg)
 {

-    // under GTK2 we prefer to use a dialog widget written using directly GTK+;
-    // in fact we cannot use a dialog written using wxWidgets: it would need
-    // the wxWidgets idle processing to work correctly!
-    GtkWidget *dialog = gtk_assert_dialog_new();
-    gtk_assert_dialog_set_message(GTK_ASSERT_DIALOG(dialog), msg.mb_str());
+#if wxDEBUG_LEVEL
+    // we can't show the dialog from another thread
+    if ( wxIsMainThread() )
+    {
+        // under GTK2 we prefer to use a dialog widget written using directly
+        // in GTK+ as use a dialog written using wxWidgets would need the
+        // wxWidgets idle processing to work correctly which might not be the
+        // case when assert happens
+        GtkWidget *dialog = gtk_assert_dialog_new();
+        gtk_assert_dialog_set_message(GTK_ASSERT_DIALOG(dialog), msg.mb_str());

 
 #if wxUSE_STACKWALKER
 
 #if wxUSE_STACKWALKER

-    // don't show more than maxLines or we could get a dialog too tall to be
-    // shown on screen: 20 should be ok everywhere as even with 15 pixel high
-    // characters it is still only 300 pixels...
-    static const int maxLines = 20;
-
-    // save current stack frame...
-    StackDump dump(GTK_ASSERT_DIALOG(dialog));
-    dump.SaveStack(maxLines);
-
-    // ...but process it only if the user needs it
-    gtk_assert_dialog_set_backtrace_callback(GTK_ASSERT_DIALOG(dialog),
-                                             (GtkAssertDialogStackFrameCallback)get_stackframe_callback,
-                                             &dump);
-#endif      // wxUSE_STACKWALKER
-
-    gint result = gtk_dialog_run(GTK_DIALOG (dialog));
-    bool returnCode = false;
-    switch (result)
-    {
-    case GTK_ASSERT_DIALOG_STOP:
-        wxTrap();
-        break;
-    case GTK_ASSERT_DIALOG_CONTINUE:
-        // nothing to do
-        break;
-    case GTK_ASSERT_DIALOG_CONTINUE_SUPPRESSING:
-        // no more asserts
-        returnCode = true;
-        break;
-
-    default:
-        wxFAIL_MSG( _T("unexpected return code from GtkAssertDialog") );
+        // save the current stack ow...
+        StackDump dump(GTK_ASSERT_DIALOG(dialog));
+        dump.SaveStack(100); // showing more than 100 frames is not very useful
+
+        // ...but process it only if the user needs it
+        gtk_assert_dialog_set_backtrace_callback
+        (
+            GTK_ASSERT_DIALOG(dialog),
+            get_stackframe_callback,
+            &dump
+        );
+#endif // wxUSE_STACKWALKER
+
+        gint result = gtk_dialog_run(GTK_DIALOG (dialog));
+        bool returnCode = false;
+        switch (result)
+        {
+            case GTK_ASSERT_DIALOG_STOP:
+                wxTrap();
+                break;
+            case GTK_ASSERT_DIALOG_CONTINUE:
+                // nothing to do
+                break;
+            case GTK_ASSERT_DIALOG_CONTINUE_SUPPRESSING:
+                // no more asserts
+                returnCode = true;
+                break;
+
+            default:
+                wxFAIL_MSG( wxT("unexpected return code from GtkAssertDialog") );
+        }
+
+        gtk_widget_destroy(dialog);
+        return returnCode;

     }
     }

+#endif // wxDEBUG_LEVEL

 
 

-    gtk_widget_destroy(dialog);
-    return returnCode;
+    return wxAppTraitsBase::ShowAssertDialog(msg);

 }
 
 }
 

-#endif  // __WXDEBUG__
-

 wxString wxGUIAppTraits::GetDesktopEnvironment() const
 {
 wxString wxGUIAppTraits::GetDesktopEnvironment() const
 {

+    wxString de = wxSystemOptions::GetOption(wxT("gtk.desktop"));

 #if wxUSE_DETECT_SM
 #if wxUSE_DETECT_SM

-    const wxString SM = GetSM();
-
-    if (SM == wxT("GnomeSM"))
-        return wxT("GNOME");
+    if ( de.empty() )
+    {
+        static const wxString s_SM = GetSM();

 
 

-    if (SM == wxT("KDE"))
-        return wxT("KDE");
+        if (s_SM == wxT("GnomeSM"))
+            de = wxT("GNOME");
+        else if (s_SM == wxT("KDE"))
+            de = wxT("KDE");
+    }

 #endif // wxUSE_DETECT_SM
 
 #endif // wxUSE_DETECT_SM
 

-    return wxEmptyString;
+    return de;
+}
+
+#ifdef __WXGTK26__
+
+// see the hack below in wxCmdLineParser::GetUsageString().
+// TODO: replace this hack with a g_option_group_get_entries()
+//       call as soon as such function exists;
+//       see http://bugzilla.gnome.org/show_bug.cgi?id=431021 for the relative
+//       feature request
+struct _GOptionGroup
+{
+  gchar           *name;
+  gchar           *description;
+  gchar           *help_description;
+
+  GDestroyNotify   destroy_notify;
+  gpointer         user_data;
+
+  GTranslateFunc   translate_func;
+  GDestroyNotify   translate_notify;
+  gpointer     translate_data;
+
+  GOptionEntry    *entries;
+  gint             n_entries;
+
+  GOptionParseFunc pre_parse_func;
+  GOptionParseFunc post_parse_func;
+  GOptionErrorFunc error_func;
+};
+
+wxString wxGetNameFromGtkOptionEntry(const GOptionEntry *opt)
+{
+    wxString ret;
+
+    if (opt->short_name)
+        ret << wxT("-") << opt->short_name;
+    if (opt->long_name)
+    {
+        if (!ret.empty())
+            ret << wxT(", ");
+        ret << wxT("--") << opt->long_name;
+
+        if (opt->arg_description)
+            ret << wxT("=") << opt->arg_description;
+    }
+
+    return wxT("  ") + ret;

 }
 
 }
 

+#endif // __WXGTK26__

 
 

+wxString
+wxGUIAppTraits::GetStandardCmdLineOptions(wxArrayString& names,
+                                          wxArrayString& desc) const
+{
+    wxString usage;
+
+#ifdef __WXGTK26__
+    if (!gtk_check_version(2,6,0))
+    {
+        // since GTK>=2.6, we can use the glib_check_version() symbol...
+
+        // check whether GLib version is greater than 2.6 but also lower than 2.31
+        // because, as we use the undocumented _GOptionGroup struct, we don't want
+        // to run this code with future versions which might change it (2.30 is the
+        // latest one at the time of this writing)
+        if (glib_check_version(2,6,0) == NULL && glib_check_version(2,31,0))
+        {
+            usage << _("The following standard GTK+ options are also supported:\n");
+
+            // passing true here means that the function can open the default
+            // display while parsing (not really used here anyhow)
+            GOptionGroup *gtkOpts = gtk_get_option_group(true);
+
+            // WARNING: here we access the internals of GOptionGroup:
+            GOptionEntry *entries = ((_GOptionGroup*)gtkOpts)->entries;
+            unsigned int n_entries = ((_GOptionGroup*)gtkOpts)->n_entries;
+            wxArrayString namesOptions, descOptions;
+
+            for ( size_t n = 0; n < n_entries; n++ )
+            {
+                if ( entries[n].flags & G_OPTION_FLAG_HIDDEN )
+                    continue;       // skip
+
+                names.push_back(wxGetNameFromGtkOptionEntry(&entries[n]));
+
+                const gchar * const entryDesc = entries[n].description;
+                desc.push_back(wxString(entryDesc));
+            }
+
+            g_option_group_free (gtkOpts);
+        }
+    }
+#else
+    wxUnusedVar(names);
+    wxUnusedVar(desc);
+#endif // __WXGTK26__
+
+    return usage;
+}