adapting ownership semantics to cocoa convention

[wxWidgets.git] / src / ribbon / page.cpp

diff --git a/src/ribbon/page.cpp b/src/ribbon/page.cpp
index dd6e2a11ef68aa9a79cc28408e370e7a9bb05f21..3448462420b4bfe709af4b5a3c81e97e2f127818 100644 (file)
--- a/src/ribbon/page.cpp
+++ b/src/ribbon/page.cpp
@@ -373,6 +373,8 @@ void wxRibbonPage::SetSizeWithScrollButtonAdjustment(int x, int y, int width, in
             }
         }
     }
+    if (width < 0) width = 0;
+    if (height < 0) height = 0;
     SetSize(x, y, width, height);
 }
 
@@ -413,9 +415,12 @@ void wxRibbonPage::OnSize(wxSizeEvent& evt)
 {
     wxSize new_size = evt.GetSize();
 
-    wxMemoryDC temp_dc;
-    wxRect invalid_rect = m_art->GetPageBackgroundRedrawArea(temp_dc, this, m_old_size, new_size);
-    Refresh(true, &invalid_rect);
+    if (m_art)
+    {
+        wxMemoryDC temp_dc;
+        wxRect invalid_rect = m_art->GetPageBackgroundRedrawArea(temp_dc, this, m_old_size, new_size);
+        Refresh(true, &invalid_rect);
+    }
 
     m_old_size = new_size;