X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2b5f62a0b2db198609b45dec622a018dae37008e..bf6e8dc931325404850952d90d4998a306793dcd:/samples/widgets/notebook.cpp

diff --git a/samples/widgets/notebook.cpp b/samples/widgets/notebook.cpp
index 6eb8b1ae65..8534da6d87 100644
--- a/samples/widgets/notebook.cpp
+++ b/samples/widgets/notebook.cpp
@@ -134,6 +134,10 @@ protected:
     // get the numeric value of text ctrl
     int GetTextValue(wxTextCtrl *text) const;
 
+    // is the value in range?
+    bool IsValidValue(int val) const
+        { return (val >= 0) && (val < m_notebook->GetPageCount()); }
+
     // the controls
     // ------------
 
@@ -393,7 +397,7 @@ void NotebookWidgetsPage::CreateNotebook()
                                 notebook->GetPageImage(n));
         }
 
-        m_sizerNotebook->Remove(notebook);
+        m_sizerNotebook->Detach( notebook );
         delete notebook;
 
         // restore selection
@@ -458,7 +462,7 @@ void NotebookWidgetsPage::OnButtonDeleteAll(wxCommandEvent& WXUNUSED(event))
 void NotebookWidgetsPage::OnButtonSelectPage(wxCommandEvent& event)
 {
     int pos = GetTextValue(m_textSelect);
-    wxCHECK_RET( pos >= 0, _T("button should be disabled") );
+    wxCHECK_RET( IsValidValue(pos), _T("button should be disabled") );
 
     m_notebook->SetSelection(pos);
 }
@@ -472,7 +476,7 @@ void NotebookWidgetsPage::OnButtonAddPage(wxCommandEvent& WXUNUSED(event))
 void NotebookWidgetsPage::OnButtonInsertPage(wxCommandEvent& WXUNUSED(event))
 {
     int pos = GetTextValue(m_textInsert);
-    wxCHECK_RET( pos >= 0, _T("button should be disabled") );
+    wxCHECK_RET( IsValidValue(pos), _T("button should be disabled") );
 
     m_notebook->InsertPage(pos, CreateNewPage(), _T("Inserted page"), FALSE,
                            GetIconIndex());
@@ -481,24 +485,24 @@ void NotebookWidgetsPage::OnButtonInsertPage(wxCommandEvent& WXUNUSED(event))
 void NotebookWidgetsPage::OnButtonRemovePage(wxCommandEvent& WXUNUSED(event))
 {
     int pos = GetTextValue(m_textRemove);
-    wxCHECK_RET( pos >= 0, _T("button should be disabled") );
+    wxCHECK_RET( IsValidValue(pos), _T("button should be disabled") );
 
     m_notebook->DeletePage(pos);
 }
 
 void NotebookWidgetsPage::OnUpdateUISelectButton(wxUpdateUIEvent& event)
 {
-    event.Enable( GetTextValue(m_textSelect) >= 0 );
+    event.Enable( IsValidValue(GetTextValue(m_textSelect)) );
 }
 
 void NotebookWidgetsPage::OnUpdateUIInsertButton(wxUpdateUIEvent& event)
 {
-    event.Enable( GetTextValue(m_textInsert) >= 0 );
+    event.Enable( IsValidValue(GetTextValue(m_textInsert)) );
 }
 
 void NotebookWidgetsPage::OnUpdateUIRemoveButton(wxUpdateUIEvent& event)
 {
-    event.Enable( GetTextValue(m_textRemove) >= 0 );
+    event.Enable( IsValidValue(GetTextValue(m_textRemove)) );
 }
 
 void NotebookWidgetsPage::OnUpdateUIResetButton(wxUpdateUIEvent& event)