Test focus event generation for all pages of the widgets sample

Previously this was done only for wxSearchCtrl, extend this now to all
the widgets in order to be able to check whether the expected events are
generated.

samples/widgets/widgets.cpp

@@ -210,6 +210,10 @@ protected:
     WidgetsPage *CurrentPage();
 
 private:
+    void OnWidgetFocus(wxFocusEvent& event);
+
+    void ConnectToWidgetEvents();
+
     // the panel containing everything
     wxPanel *m_panel;
 
@@ -668,6 +672,19 @@ WidgetsPage *WidgetsFrame::CurrentPage()
     return wxStaticCast(page, WidgetsPage);
 }
 
+void WidgetsFrame::ConnectToWidgetEvents()
+{
+    const Widgets& widgets = CurrentPage()->GetWidgets();
+
+    for ( Widgets::const_iterator it = widgets.begin();
+            it != widgets.end();
+            ++it )
+    {
+        (*it)->Bind(wxEVT_SET_FOCUS, &WidgetsFrame::OnWidgetFocus, this);
+        (*it)->Bind(wxEVT_KILL_FOCUS, &WidgetsFrame::OnWidgetFocus, this);
+    }
+}
+
 WidgetsFrame::~WidgetsFrame()
 {
 #if USE_LOG
@@ -723,7 +740,10 @@ void WidgetsFrame::OnPageChanged(WidgetsBookCtrlEvent& event)
         wxWindowUpdateLocker noUpdates(curPage);
         curPage->CreateContent();
         curPage->Layout();
+
+        ConnectToWidgetEvents();
     }
+
     // re-apply the attributes to the widget(s)
     curPage->SetUpWidget();
 
@@ -890,6 +910,9 @@ void WidgetsFrame::OnSetBorder(wxCommandEvent& event)
     WidgetsPage *page = CurrentPage();
 
     page->RecreateWidget();
+
+    ConnectToWidgetEvents();
+
     // re-apply the attributes to the widget(s)
     page->SetUpWidget();
 }
@@ -1172,6 +1195,14 @@ void WidgetsFrame::OnSetHint(wxCommandEvent& WXUNUSED(event))
 
 #endif // wxUSE_MENUS
 
+void WidgetsFrame::OnWidgetFocus(wxFocusEvent& event)
+{
+    wxLogMessage("Widgets %s focus",
+                 event.GetEventType() == wxEVT_SET_FOCUS ? "got" : "lost");
+
+    event.Skip();
+}
+
 // ----------------------------------------------------------------------------
 // WidgetsPageInfo
 // ----------------------------------------------------------------------------