New code for char and key events under GTK 2.0. This

uses the built-in input method which is required
    even for getting European characters. Key down
    events probably don't work anymore. It is still
    impossible to receive Unicode characters due to
    the limitations of wxKeyEvent.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@17579 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/defs.h

@@ -2088,6 +2088,9 @@ typedef GtkWidget *WXWidget;
 typedef struct _PangoContext         PangoContext;
 typedef struct _PangoLayout          PangoLayout;
 typedef struct _PangoFontDescription PangoFontDescription;
+
+/* Input method thing */
+typedef struct _GtkIMMulticontext    GtkIMMulticontext;
 #endif // GTK+ 2.0
 
 #endif // GTK

include/wx/gtk/window.h

@@ -195,11 +195,15 @@ public:
     // this widget will be queried for GTK's focus events
     GtkWidget           *m_focusWidget;
 
+#ifdef __WXGTK20__
+    GtkIMMulticontext   *m_imContext;
+#else
 #if HAVE_XIM
     // XIM support for wxWindows
     GdkIC               *m_ic;
     GdkICAttr           *m_icattr;
 #endif
+#endif
 
 #ifndef __WXGTK20__
     // The area to be cleared (and not just refreshed)

include/wx/gtk1/window.h

@@ -195,11 +195,15 @@ public:
     // this widget will be queried for GTK's focus events
     GtkWidget           *m_focusWidget;
 
+#ifdef __WXGTK20__
+    GtkIMMulticontext   *m_imContext;
+#else
 #if HAVE_XIM
     // XIM support for wxWindows
     GdkIC               *m_ic;
     GdkICAttr           *m_icattr;
 #endif
+#endif
 
 #ifndef __WXGTK20__
     // The area to be cleared (and not just refreshed)

samples/erase/erase.cpp

@@ -73,9 +73,11 @@ public:
     MyCanvas( MyFrame *parent );
 
     void OnPaint( wxPaintEvent &event );
+    void OnChar( wxKeyEvent &event );
     void OnEraseBackground( wxEraseEvent &event );
 
     wxBitmap    m_bitmap;
+    wxString    m_text;
 
 private:
     DECLARE_EVENT_TABLE()
@@ -160,6 +162,7 @@ void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 
 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
     EVT_PAINT(  MyCanvas::OnPaint)
+    EVT_CHAR(  MyCanvas::OnChar)
     EVT_ERASE_BACKGROUND(  MyCanvas::OnEraseBackground)
 END_EVENT_TABLE()
 
@@ -176,6 +179,22 @@ MyCanvas::MyCanvas( MyFrame *parent )
     new wxStaticBitmap( this, -1, m_bitmap, wxPoint(80,20) );
 }
 
+void MyCanvas::OnChar( wxKeyEvent &event )
+{
+    // some test cases
+    switch (event.m_keyCode)
+    {
+        case WXK_UP: m_text += wxT( "<UP>" ); break;
+        case WXK_LEFT: m_text += wxT( "<LEFT>" ); break;
+        case WXK_RIGHT: m_text += wxT( "<RIGHT>" ); break;
+        case WXK_DOWN: m_text += wxT( "<DOWN>" ); break;
+        case WXK_RETURN: m_text += wxT( "<ENTER>" ); break;
+        default: m_text += event.m_keyCode; break;
+    }
+    
+    Refresh();
+}
+
 void MyCanvas::OnPaint( wxPaintEvent &event )
 {
     wxPaintDC dc(this);
@@ -189,6 +208,14 @@ void MyCanvas::OnPaint( wxPaintEvent &event )
     dc.SetTextForeground(*wxBLUE);
     dc.DrawText(_T("This text is drawn from OnPaint"), 65, 65);
     
+    wxString tmp;
+    tmp.Printf( _T("Hit any key to display more text: %s"), m_text.c_str() );
+    int w,h;
+    dc.GetTextExtent( tmp, &w, &h );
+    dc.SetBrush( *wxWHITE_BRUSH );
+    dc.DrawRectangle( 65, 85, w, h );
+    dc.DrawText( tmp, 65, 85 );
+
 #if 0
     wxRegionIterator upd( GetUpdateRegion() );
     while (upd)

src/gtk/window.cpp

@@ -1061,6 +1061,7 @@ wxTranslateGTKKeyEventToWx(wxKeyEvent& event,
     return TRUE;
 }
 
+#ifndef __WXGTK20__
 static gint gtk_window_key_press_callback( GtkWidget *widget,
                                            GdkEventKey *gdk_event,
                                            wxWindow *win )
@@ -1208,36 +1209,6 @@ static gint gtk_window_key_press_callback( GtkWidget *widget,
         }
     }
 
-    // Doesn't work.
-#if 0 
-    // Pressing F10 will activate the menu bar of the top frame
-    if ( (!ret) &&
-         (gdk_event->keyval == GDK_F10) )
-    {
-        wxWindowGTK *ancestor = win;
-        while (ancestor)
-        {
-            if (wxIsKindOf(ancestor,wxFrame))
-            {
-                wxFrame *frame = (wxFrame*) ancestor;
-                wxMenuBar *menubar = frame->GetMenuBar();
-                if (menubar)
-                {
-                    wxNode *node = menubar->GetMenus().First();
-                    if (node)
-                    {
-                        wxMenu *firstMenu = (wxMenu*) node->Data();
-                        gtk_menu_item_select( GTK_MENU_ITEM(firstMenu->m_owner) );
-                        ret = TRUE;
-                        break;
-                    }
-                }
-            }
-            ancestor = ancestor->GetParent();
-        }
-    }
-#endif // 0
-
     if (ret)
     {
         gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "key_press_event" );
@@ -1246,6 +1217,165 @@ static gint gtk_window_key_press_callback( GtkWidget *widget,
     
     return FALSE;
 }
+#endif
+
+#ifdef __WXGTK20__
+static gint gtk_window_key_press_callback( GtkWidget *widget,
+                                           GdkEventKey *gdk_event,
+                                           wxWindow *win )
+{
+    if (g_isIdle)
+        wxapp_install_idle_handler();
+
+    if (!win->m_hasVMT)
+        return FALSE;
+    if (g_blockEventsOnDrag)
+        return FALSE;
+    
+    bool ret = FALSE;
+    bool dont_use_IM = FALSE;
+    
+    wxKeyEvent event( wxEVT_KEY_DOWN );
+    long keycode = wxTranslateKeySymToWXKey( gdk_event->keyval, FALSE );
+    if (keycode)
+    {
+        // We were able to decode the key press without
+        // any input method, so don't use it.
+        dont_use_IM = TRUE;
+         
+        // now fill all the other fields
+        int x = 0;
+        int y = 0;
+        GdkModifierType state;
+        if (gdk_event->window)
+            gdk_window_get_pointer(gdk_event->window, &x, &y, &state);
+
+        event.SetTimestamp( gdk_event->time );
+        event.m_shiftDown = (gdk_event->state & GDK_SHIFT_MASK) != 0;
+        event.m_controlDown = (gdk_event->state & GDK_CONTROL_MASK) != 0;
+        event.m_altDown = (gdk_event->state & GDK_MOD1_MASK) != 0;
+        event.m_metaDown = (gdk_event->state & GDK_MOD2_MASK) != 0;
+        event.m_keyCode = keycode;
+        event.m_scanCode = gdk_event->keyval;
+        event.m_rawCode = (wxUint32) gdk_event->keyval;
+        event.m_rawFlags = 0;
+        event.m_x = x;
+        event.m_y = y;
+        event.SetEventObject( win );
+        
+        // send key down event
+        ret = win->GetEventHandler()->ProcessEvent( event );
+        
+        if (!ret)        
+        {
+            // Implement OnCharHook by checking ancesteror top level windows
+            wxWindow *parent = win;
+            while (parent && !parent->IsTopLevel())
+            parent = parent->GetParent();
+            if (parent)
+            {
+                event.SetEventType( wxEVT_CHAR_HOOK );
+                ret = parent->GetEventHandler()->ProcessEvent( event );
+            }
+
+            if (!ret)
+            {
+                event.SetEventType(wxEVT_CHAR);
+                ret = win->GetEventHandler()->ProcessEvent( event );
+            }
+        }
+        
+        // win is a control: tab can be propagated up
+        if ( !ret &&
+             ((gdk_event->keyval == GDK_Tab) || (gdk_event->keyval == GDK_ISO_Left_Tab)) &&
+            win->GetParent() && (win->GetParent()->HasFlag( wxTAB_TRAVERSAL)) )
+        {
+            wxNavigationKeyEvent new_event;
+            new_event.SetEventObject( win->GetParent() );
+            // GDK reports GDK_ISO_Left_Tab for SHIFT-TAB
+            new_event.SetDirection( (gdk_event->keyval == GDK_Tab) );
+            // CTRL-TAB changes the (parent) window, i.e. switch notebook page
+            new_event.SetWindowChange( (gdk_event->state & GDK_CONTROL_MASK) );
+            new_event.SetCurrentFocus( win );
+            ret = win->GetParent()->GetEventHandler()->ProcessEvent( new_event );
+        }
+
+        if ( !ret &&
+             (gdk_event->keyval == GDK_Escape) )
+        {
+            wxWindow *winForCancel = win, *btnCancel = NULL;
+            while ( winForCancel )
+            {
+                btnCancel = winForCancel->FindWindow(wxID_CANCEL);
+                if ( btnCancel ) break;
+
+                if ( winForCancel->IsTopLevel() ) break;
+                
+                winForCancel = winForCancel->GetParent();
+            }
+
+            if ( btnCancel )
+            {
+                wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
+                event.SetEventObject(btnCancel);
+                ret = btnCancel->GetEventHandler()->ProcessEvent(event);
+            }
+        }
+    }
+        
+    if (ret)
+    {
+        gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "key_press_event" );
+        return TRUE;
+    }
+    
+    if (!dont_use_IM && win->m_imContext)
+    {
+        // In GTK 2.0, we need to hand over the key
+        // event to an input method and the IM will
+        // emit a "commit" event containing the
+        // actual utf8 character.  
+        gtk_im_context_filter_keypress ( (GtkIMContext*) win->m_imContext, gdk_event );
+        
+        return TRUE;
+    }
+    
+    return FALSE;
+}
+
+static void gtk_wxwindow_commit_cb (GtkIMContext *context,
+						   const gchar  *str,
+						   wxWindow     *window)
+{
+    bool ret = FALSE;   
+    
+    wxKeyEvent event( wxEVT_KEY_DOWN );
+    
+    // I wonder how well keyval represents a Unicode char
+    gunichar ch = g_utf8_get_char( str );
+    event.m_keyCode = ch;
+    
+    if (!ret)
+    {
+        // Implement OnCharHook by checking ancesteror top level windows
+        wxWindow *parent = window;
+        while (parent && !parent->IsTopLevel())
+        parent = parent->GetParent();
+        if (parent)
+        {
+            event.SetEventType( wxEVT_CHAR_HOOK );
+            ret = parent->GetEventHandler()->ProcessEvent( event );
+        }
+
+        if (!ret)
+        {
+            event.SetEventType(wxEVT_CHAR);
+            ret = window->GetEventHandler()->ProcessEvent( event );
+        }
+    }
+}
+#endif
+
 
 //-----------------------------------------------------------------------------
 // "key_release_event" from any window
@@ -2121,7 +2251,7 @@ static void gtk_window_destroy_callback( GtkWidget* widget, wxWindow *win )
    been realized, so we do this directly after realization. */
 
 static gint
-gtk_window_realized_callback( GtkWidget *WXUNUSED(m_widget), wxWindow *win )
+gtk_window_realized_callback( GtkWidget *m_widget, wxWindow *win )
 {
     DEBUG_MAIN_THREAD
 
@@ -2134,6 +2264,14 @@ gtk_window_realized_callback( GtkWidget *WXUNUSED(m_widget), wxWindow *win )
     if (win->m_delayedForegroundColour)
         win->GtkSetForegroundColour( win->GetForegroundColour() );
         
+#ifdef __WXGTK20__
+    if (win->m_imContext)
+    {
+        GtkPizza *pizza = GTK_PIZZA( m_widget );
+        gtk_im_context_set_client_window( (GtkIMContext*) win->m_imContext, pizza->bin_window );
+    }
+#endif
+
     wxWindowCreateEvent event( win );
     event.SetEventObject( win );
     win->GetEventHandler()->ProcessEvent( event );
@@ -2393,10 +2531,14 @@ void wxWindowGTK::Init()
     m_delayedForegroundColour = FALSE;
     m_delayedBackgroundColour = FALSE;
 
+#ifdef __WXGTK20__
+    m_imContext = NULL;
+#else            
 #ifdef HAVE_XIM
     m_ic = (GdkIC*) NULL;
     m_icattr = (GdkICAttr*) NULL;
 #endif
+#endif
 }
 
 wxWindowGTK::wxWindowGTK()
@@ -2517,6 +2659,17 @@ bool wxWindowGTK::Create( wxWindow *parent,
     gtk_signal_connect( GTK_OBJECT(m_vAdjust), "value_changed",
           (GtkSignalFunc) gtk_window_vscroll_callback, (gpointer) this );
 
+#ifdef __WXGTK20__
+    // Create input method handler
+    m_imContext = (GtkIMMulticontext*) gtk_im_multicontext_new ();
+    
+    // Cannot handle drawing preedited text yet
+    gtk_im_context_set_use_preedit( (GtkIMContext*) m_imContext, FALSE );
+  
+    g_signal_connect (G_OBJECT (m_imContext), "commit",
+        G_CALLBACK (gtk_wxwindow_commit_cb), this);
+#endif
+
     gtk_widget_show( m_wxwindow );
 
     if (m_parent)
@@ -2642,6 +2795,18 @@ void wxWindowGTK::PostCreation()
 #else
             // gtk_widget_set_redraw_on_allocate( GTK_WIDGET(m_wxwindow), HasFlag( wxNO_FULL_REPAINT_ON_RESIZE ) );
 #endif
+
+#ifdef __WXGTK20__
+        // Create input method handler
+        m_imContext = (GtkIMMulticontext*) gtk_im_multicontext_new ();
+    
+        // Cannot handle drawing preedited text yet
+        gtk_im_context_set_use_preedit( (GtkIMContext*) m_imContext, FALSE );
+  
+        g_signal_connect (G_OBJECT (m_imContext), "commit",
+            G_CALLBACK (gtk_wxwindow_commit_cb), this);
+#endif
+
         }
 
         // these are called when the "sunken" or "raised" borders are drawn

src/gtk1/window.cpp

@@ -1061,6 +1061,7 @@ wxTranslateGTKKeyEventToWx(wxKeyEvent& event,
     return TRUE;
 }
 
+#ifndef __WXGTK20__
 static gint gtk_window_key_press_callback( GtkWidget *widget,
                                            GdkEventKey *gdk_event,
                                            wxWindow *win )
@@ -1208,36 +1209,6 @@ static gint gtk_window_key_press_callback( GtkWidget *widget,
         }
     }
 
-    // Doesn't work.
-#if 0 
-    // Pressing F10 will activate the menu bar of the top frame
-    if ( (!ret) &&
-         (gdk_event->keyval == GDK_F10) )
-    {
-        wxWindowGTK *ancestor = win;
-        while (ancestor)
-        {
-            if (wxIsKindOf(ancestor,wxFrame))
-            {
-                wxFrame *frame = (wxFrame*) ancestor;
-                wxMenuBar *menubar = frame->GetMenuBar();
-                if (menubar)
-                {
-                    wxNode *node = menubar->GetMenus().First();
-                    if (node)
-                    {
-                        wxMenu *firstMenu = (wxMenu*) node->Data();
-                        gtk_menu_item_select( GTK_MENU_ITEM(firstMenu->m_owner) );
-                        ret = TRUE;
-                        break;
-                    }
-                }
-            }
-            ancestor = ancestor->GetParent();
-        }
-    }
-#endif // 0
-
     if (ret)
     {
         gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "key_press_event" );
@@ -1246,6 +1217,165 @@ static gint gtk_window_key_press_callback( GtkWidget *widget,
     
     return FALSE;
 }
+#endif
+
+#ifdef __WXGTK20__
+static gint gtk_window_key_press_callback( GtkWidget *widget,
+                                           GdkEventKey *gdk_event,
+                                           wxWindow *win )
+{
+    if (g_isIdle)
+        wxapp_install_idle_handler();
+
+    if (!win->m_hasVMT)
+        return FALSE;
+    if (g_blockEventsOnDrag)
+        return FALSE;
+    
+    bool ret = FALSE;
+    bool dont_use_IM = FALSE;
+    
+    wxKeyEvent event( wxEVT_KEY_DOWN );
+    long keycode = wxTranslateKeySymToWXKey( gdk_event->keyval, FALSE );
+    if (keycode)
+    {
+        // We were able to decode the key press without
+        // any input method, so don't use it.
+        dont_use_IM = TRUE;
+         
+        // now fill all the other fields
+        int x = 0;
+        int y = 0;
+        GdkModifierType state;
+        if (gdk_event->window)
+            gdk_window_get_pointer(gdk_event->window, &x, &y, &state);
+
+        event.SetTimestamp( gdk_event->time );
+        event.m_shiftDown = (gdk_event->state & GDK_SHIFT_MASK) != 0;
+        event.m_controlDown = (gdk_event->state & GDK_CONTROL_MASK) != 0;
+        event.m_altDown = (gdk_event->state & GDK_MOD1_MASK) != 0;
+        event.m_metaDown = (gdk_event->state & GDK_MOD2_MASK) != 0;
+        event.m_keyCode = keycode;
+        event.m_scanCode = gdk_event->keyval;
+        event.m_rawCode = (wxUint32) gdk_event->keyval;
+        event.m_rawFlags = 0;
+        event.m_x = x;
+        event.m_y = y;
+        event.SetEventObject( win );
+        
+        // send key down event
+        ret = win->GetEventHandler()->ProcessEvent( event );
+        
+        if (!ret)        
+        {
+            // Implement OnCharHook by checking ancesteror top level windows
+            wxWindow *parent = win;
+            while (parent && !parent->IsTopLevel())
+            parent = parent->GetParent();
+            if (parent)
+            {
+                event.SetEventType( wxEVT_CHAR_HOOK );
+                ret = parent->GetEventHandler()->ProcessEvent( event );
+            }
+
+            if (!ret)
+            {
+                event.SetEventType(wxEVT_CHAR);
+                ret = win->GetEventHandler()->ProcessEvent( event );
+            }
+        }
+        
+        // win is a control: tab can be propagated up
+        if ( !ret &&
+             ((gdk_event->keyval == GDK_Tab) || (gdk_event->keyval == GDK_ISO_Left_Tab)) &&
+            win->GetParent() && (win->GetParent()->HasFlag( wxTAB_TRAVERSAL)) )
+        {
+            wxNavigationKeyEvent new_event;
+            new_event.SetEventObject( win->GetParent() );
+            // GDK reports GDK_ISO_Left_Tab for SHIFT-TAB
+            new_event.SetDirection( (gdk_event->keyval == GDK_Tab) );
+            // CTRL-TAB changes the (parent) window, i.e. switch notebook page
+            new_event.SetWindowChange( (gdk_event->state & GDK_CONTROL_MASK) );
+            new_event.SetCurrentFocus( win );
+            ret = win->GetParent()->GetEventHandler()->ProcessEvent( new_event );
+        }
+
+        if ( !ret &&
+             (gdk_event->keyval == GDK_Escape) )
+        {
+            wxWindow *winForCancel = win, *btnCancel = NULL;
+            while ( winForCancel )
+            {
+                btnCancel = winForCancel->FindWindow(wxID_CANCEL);
+                if ( btnCancel ) break;
+
+                if ( winForCancel->IsTopLevel() ) break;
+                
+                winForCancel = winForCancel->GetParent();
+            }
+
+            if ( btnCancel )
+            {
+                wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, wxID_CANCEL);
+                event.SetEventObject(btnCancel);
+                ret = btnCancel->GetEventHandler()->ProcessEvent(event);
+            }
+        }
+    }
+        
+    if (ret)
+    {
+        gtk_signal_emit_stop_by_name( GTK_OBJECT(widget), "key_press_event" );
+        return TRUE;
+    }
+    
+    if (!dont_use_IM && win->m_imContext)
+    {
+        // In GTK 2.0, we need to hand over the key
+        // event to an input method and the IM will
+        // emit a "commit" event containing the
+        // actual utf8 character.  
+        gtk_im_context_filter_keypress ( (GtkIMContext*) win->m_imContext, gdk_event );
+        
+        return TRUE;
+    }
+    
+    return FALSE;
+}
+
+static void gtk_wxwindow_commit_cb (GtkIMContext *context,
+						   const gchar  *str,
+						   wxWindow     *window)
+{
+    bool ret = FALSE;   
+    
+    wxKeyEvent event( wxEVT_KEY_DOWN );
+    
+    // I wonder how well keyval represents a Unicode char
+    gunichar ch = g_utf8_get_char( str );
+    event.m_keyCode = ch;
+    
+    if (!ret)
+    {
+        // Implement OnCharHook by checking ancesteror top level windows
+        wxWindow *parent = window;
+        while (parent && !parent->IsTopLevel())
+        parent = parent->GetParent();
+        if (parent)
+        {
+            event.SetEventType( wxEVT_CHAR_HOOK );
+            ret = parent->GetEventHandler()->ProcessEvent( event );
+        }
+
+        if (!ret)
+        {
+            event.SetEventType(wxEVT_CHAR);
+            ret = window->GetEventHandler()->ProcessEvent( event );
+        }
+    }
+}
+#endif
+
 
 //-----------------------------------------------------------------------------
 // "key_release_event" from any window
@@ -2121,7 +2251,7 @@ static void gtk_window_destroy_callback( GtkWidget* widget, wxWindow *win )
    been realized, so we do this directly after realization. */
 
 static gint
-gtk_window_realized_callback( GtkWidget *WXUNUSED(m_widget), wxWindow *win )
+gtk_window_realized_callback( GtkWidget *m_widget, wxWindow *win )
 {
     DEBUG_MAIN_THREAD
 
@@ -2134,6 +2264,14 @@ gtk_window_realized_callback( GtkWidget *WXUNUSED(m_widget), wxWindow *win )
     if (win->m_delayedForegroundColour)
         win->GtkSetForegroundColour( win->GetForegroundColour() );
         
+#ifdef __WXGTK20__
+    if (win->m_imContext)
+    {
+        GtkPizza *pizza = GTK_PIZZA( m_widget );
+        gtk_im_context_set_client_window( (GtkIMContext*) win->m_imContext, pizza->bin_window );
+    }
+#endif
+
     wxWindowCreateEvent event( win );
     event.SetEventObject( win );
     win->GetEventHandler()->ProcessEvent( event );
@@ -2393,10 +2531,14 @@ void wxWindowGTK::Init()
     m_delayedForegroundColour = FALSE;
     m_delayedBackgroundColour = FALSE;
 
+#ifdef __WXGTK20__
+    m_imContext = NULL;
+#else            
 #ifdef HAVE_XIM
     m_ic = (GdkIC*) NULL;
     m_icattr = (GdkICAttr*) NULL;
 #endif
+#endif
 }
 
 wxWindowGTK::wxWindowGTK()
@@ -2517,6 +2659,17 @@ bool wxWindowGTK::Create( wxWindow *parent,
     gtk_signal_connect( GTK_OBJECT(m_vAdjust), "value_changed",
           (GtkSignalFunc) gtk_window_vscroll_callback, (gpointer) this );
 
+#ifdef __WXGTK20__
+    // Create input method handler
+    m_imContext = (GtkIMMulticontext*) gtk_im_multicontext_new ();
+    
+    // Cannot handle drawing preedited text yet
+    gtk_im_context_set_use_preedit( (GtkIMContext*) m_imContext, FALSE );
+  
+    g_signal_connect (G_OBJECT (m_imContext), "commit",
+        G_CALLBACK (gtk_wxwindow_commit_cb), this);
+#endif
+
     gtk_widget_show( m_wxwindow );
 
     if (m_parent)
@@ -2642,6 +2795,18 @@ void wxWindowGTK::PostCreation()
 #else
             // gtk_widget_set_redraw_on_allocate( GTK_WIDGET(m_wxwindow), HasFlag( wxNO_FULL_REPAINT_ON_RESIZE ) );
 #endif
+
+#ifdef __WXGTK20__
+        // Create input method handler
+        m_imContext = (GtkIMMulticontext*) gtk_im_multicontext_new ();
+    
+        // Cannot handle drawing preedited text yet
+        gtk_im_context_set_use_preedit( (GtkIMContext*) m_imContext, FALSE );
+  
+        g_signal_connect (G_OBJECT (m_imContext), "commit",
+            G_CALLBACK (gtk_wxwindow_commit_cb), this);
+#endif
+
         }
 
         // these are called when the "sunken" or "raised" borders are drawn