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 39044e31e880958f4f78e19749928fd7629393b9..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;
 
@@ -251,10 +255,10 @@ class WXDLLIMPEXP_CORE wxSizerItem : public wxObject
 public:
     // window
     wxSizerItem( wxWindow *window,
-                 int proportion,
-                 int flag,
-                 int border,
-                 wxObject* userData );
+                 int proportion=0,
+                 int flag=0,
+                 int border=0,
+                 wxObject* userData=NULL );
 
     // window with flags
     wxSizerItem(wxWindow *window, const wxSizerFlags& flags)
@@ -266,10 +270,10 @@ public:
 
     // subsizer
     wxSizerItem( wxSizer *sizer,
-                 int proportion,
-                 int flag,
-                 int border,
-                 wxObject* userData );
+                 int proportion=0,
+                 int flag=0,
+                 int border=0,
+                 wxObject* userData=NULL );
 
     // sizer with flags
     wxSizerItem(wxSizer *sizer, const wxSizerFlags& flags)
@@ -282,10 +286,10 @@ public:
     // spacer
     wxSizerItem( int width,
                  int height,
-                 int proportion,
-                 int flag,
-                 int border,
-                 wxObject* userData);
+                 int proportion=0,
+                 int flag=0,
+                 int border=0,
+                 wxObject* userData=NULL);
 
     // spacer with flags
     wxSizerItem(int width, int height, const wxSizerFlags& flags)
@@ -311,6 +315,10 @@ public:
         { return m_minSize; }
     wxSize GetMinSizeWithBorder() const;
 
+    wxSize GetMaxSize() const
+        { return IsWindow() ? m_window->GetMaxSize() : wxDefaultSize; }
+    wxSize GetMaxSizeWithBorder() const;
+
     void SetMinSize(const wxSize& size)
     {
         if ( IsWindow() )
@@ -436,6 +444,10 @@ protected:
     void DoSetSizer(wxSizer *sizer);
     void DoSetSpacer(const wxSize& size);
 
+    // Add the border specified for this item to the given size
+    // if it's != wxDefaultSize, just return wxDefaultSize otherwise.
+    wxSize AddBorderToSize(const wxSize& size) const;
+
     // discriminated union: depending on m_kind one of the fields is valid
     enum
     {
@@ -601,7 +613,7 @@ public:
     virtual void DeleteWindows();
 
     // Inform sizer about the first direction that has been decided (by parent item)
-    // Returns true if it made use of the informtion (and recalculated min size)
+    // Returns true if it made use of the information (and recalculated min size)
     virtual bool InformFirstDirection( int WXUNUSED(direction), int WXUNUSED(size), int WXUNUSED(availableOtherDir) )
         { return false; }
 
@@ -703,6 +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;
@@ -1021,6 +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); }