X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/3379ed3789e405f874d9db757d95346f1d378795..a8f6ef519066976e75833343952f7b6dd70dafa0:/samples/widgets/combobox.cpp

diff --git a/samples/widgets/combobox.cpp b/samples/widgets/combobox.cpp
index 365b2778f0..b4a4ecc961 100644
--- a/samples/widgets/combobox.cpp
+++ b/samples/widgets/combobox.cpp
@@ -133,8 +133,8 @@ protected:
                *m_textDelete;
 
 private:
-    DECLARE_EVENT_TABLE();
-    DECLARE_WIDGETS_PAGE(ComboboxWidgetsPage);
+    DECLARE_EVENT_TABLE()
+    DECLARE_WIDGETS_PAGE(ComboboxWidgetsPage)
 };
 
 // ----------------------------------------------------------------------------
@@ -182,8 +182,6 @@ ComboboxWidgetsPage::ComboboxWidgetsPage(wxNotebook *notebook,
                                        wxImageList *imaglist)
                   : WidgetsPage(notebook)
 {
-    imaglist->Add(wxBitmap(combobox_xpm));
-
     // init everything
     m_chkSort =
     m_chkReadonly = (wxCheckBox *)NULL;
@@ -191,6 +189,8 @@ ComboboxWidgetsPage::ComboboxWidgetsPage(wxNotebook *notebook,
     m_combobox = (wxComboBox *)NULL;
     m_sizerCombo = (wxSizer *)NULL;
 
+    imaglist->Add(wxBitmap(combobox_xpm));
+
     /*
        What we create here is a frame having 3 panes: style pane is the
        leftmost one, in the middle the pane with buttons allowing to perform
@@ -441,38 +441,49 @@ void ComboboxWidgetsPage::OnButtonAddSeveral(wxCommandEvent& event)
 
 void ComboboxWidgetsPage::OnUpdateUICurText(wxUpdateUIEvent& event)
 {
-    event.SetText( wxString::Format(_T("%d"), m_combobox->GetSelection()) );
+    if (m_combobox)
+        event.SetText( wxString::Format(_T("%d"), m_combobox->GetSelection()) );
 }
 
 void ComboboxWidgetsPage::OnUpdateUIResetButton(wxUpdateUIEvent& event)
 {
-    event.Enable( m_chkSort->GetValue() || m_chkReadonly->GetValue() );
+    if (m_combobox)
+        event.Enable( m_chkSort->GetValue() || m_chkReadonly->GetValue() );
 }
 
 void ComboboxWidgetsPage::OnUpdateUIDeleteButton(wxUpdateUIEvent& event)
 {
-    unsigned long n;
-    event.Enable(m_textDelete->GetValue().ToULong(&n) &&
-                    (n < (unsigned)m_combobox->GetCount()));
+    if (m_combobox)
+    {
+      unsigned long n;
+      event.Enable(m_textDelete->GetValue().ToULong(&n) &&
+  		 (n < (unsigned)m_combobox->GetCount()));
+    }
 }
 
 void ComboboxWidgetsPage::OnUpdateUIDeleteSelButton(wxUpdateUIEvent& event)
 {
-    event.Enable(m_combobox->GetSelection() != -1);
+    if (m_combobox)
+        event.Enable(m_combobox->GetSelection() != -1);
 }
 
 void ComboboxWidgetsPage::OnUpdateUIClearButton(wxUpdateUIEvent& event)
 {
-    event.Enable(m_combobox->GetCount() != 0);
+    if (m_combobox)
+        event.Enable(m_combobox->GetCount() != 0);
 }
 
 void ComboboxWidgetsPage::OnUpdateUIAddSeveral(wxUpdateUIEvent& event)
 {
-    event.Enable(!(m_combobox->GetWindowStyle() & wxCB_SORT));
+    if (m_combobox)
+        event.Enable(!(m_combobox->GetWindowStyle() & wxCB_SORT));
 }
 
 void ComboboxWidgetsPage::OnComboText(wxCommandEvent& event)
 {
+    if (!m_combobox)
+	return;
+    
     wxString s = event.GetString();
 
     wxASSERT_MSG( s == m_combobox->GetValue(),