Don't create multiple parent-less top level frames in layout sample.

[wxWidgets.git] / include / wx / sizer.h

diff --git a/include/wx/sizer.h b/include/wx/sizer.h
index ff462469b230d46a5342a1a362c9de07328bfd13..29facff1e2278a182cd152c3d52c1762a4058f1f 100644 (file)
--- a/include/wx/sizer.h
+++ b/include/wx/sizer.h
@@ -125,6 +125,10 @@ public:
 
     wxSizerFlags& Border(int direction, int borderInPixels)
     {
+        wxCHECK_MSG( !(direction & ~wxALL), *this,
+                     wxS("direction must be a combination of wxDirection ")
+                     wxS("enum values.") );
+
         m_flags &= ~wxALL;
         m_flags |= direction;
 
@@ -711,6 +715,10 @@ public:
 
     void Show(bool show) { ShowItems(show); }
 
+    // This is the ShowItems() counterpart and returns true if any of the sizer
+    // items are shown.
+    virtual bool AreAnyItemsShown() const;
+
 protected:
     wxSize              m_size;
     wxSize              m_minSize;
@@ -1029,6 +1037,7 @@ public:
 
     // override to hide/show the static box as well
     virtual void ShowItems (bool show);
+    virtual bool AreAnyItemsShown() const;
 
     virtual bool Detach( wxWindow *window );
     virtual bool Detach( wxSizer *sizer ) { return wxBoxSizer::Detach(sizer); }