diff --git a/samples/aui/auidemo.cpp b/samples/aui/auidemo.cpp
index c8e425d531..7e85086561 100644
--- a/samples/aui/auidemo.cpp
+++ b/samples/aui/auidemo.cpp
@@ -290,7 +290,7 @@ public:
         //vert->Add(1, 1, 1, wxEXPAND);
 
         wxBoxSizer* s1 = new wxBoxSizer(wxHORIZONTAL);
-        m_border_size = new wxSpinCtrl(this, ID_PaneBorderSize, wxString::Format(wxT("%d"), frame->GetDockArt()->GetMetric(wxAUI_DOCKART_PANE_BORDER_SIZE)), wxDefaultPosition, wxSize(50,20), wxSP_ARROW_KEYS, 0, 100, frame->GetDockArt()->GetMetric(wxAUI_DOCKART_PANE_BORDER_SIZE));
+        m_border_size = new wxSpinCtrl(this, ID_PaneBorderSize, wxString::Format(wxT("%d"), frame->GetDockArt()->GetMetric(wxAUI_DOCKART_PANE_BORDER_SIZE)), wxDefaultPosition, wxDefaultSize, wxSP_ARROW_KEYS, 0, 100, frame->GetDockArt()->GetMetric(wxAUI_DOCKART_PANE_BORDER_SIZE));
         s1->Add(1, 1, 1, wxEXPAND);
         s1->Add(new wxStaticText(this, wxID_ANY, wxT("Pane Border Size:")));
         s1->Add(m_border_size);
@@ -299,7 +299,7 @@ public:
         //vert->Add(s1, 0, wxEXPAND | wxLEFT | wxBOTTOM, 5);
 
         wxBoxSizer* s2 = new wxBoxSizer(wxHORIZONTAL);
-        m_sash_size = new wxSpinCtrl(this, ID_SashSize, wxString::Format(wxT("%d"), frame->GetDockArt()->GetMetric(wxAUI_DOCKART_SASH_SIZE)), wxDefaultPosition, wxSize(50,20), wxSP_ARROW_KEYS, 0, 100, frame->GetDockArt()->GetMetric(wxAUI_DOCKART_SASH_SIZE));
+        m_sash_size = new wxSpinCtrl(this, ID_SashSize, wxString::Format(wxT("%d"), frame->GetDockArt()->GetMetric(wxAUI_DOCKART_SASH_SIZE)), wxDefaultPosition, wxDefaultSize, wxSP_ARROW_KEYS, 0, 100, frame->GetDockArt()->GetMetric(wxAUI_DOCKART_SASH_SIZE));
         s2->Add(1, 1, 1, wxEXPAND);
         s2->Add(new wxStaticText(this, wxID_ANY, wxT("Sash Size:")));
         s2->Add(m_sash_size);
@@ -308,7 +308,7 @@ public:
         //vert->Add(s2, 0, wxEXPAND | wxLEFT | wxBOTTOM, 5);
 
         wxBoxSizer* s3 = new wxBoxSizer(wxHORIZONTAL);
-        m_caption_size = new wxSpinCtrl(this, ID_CaptionSize, wxString::Format(wxT("%d"), frame->GetDockArt()->GetMetric(wxAUI_DOCKART_CAPTION_SIZE)), wxDefaultPosition, wxSize(50,20), wxSP_ARROW_KEYS, 0, 100, frame->GetDockArt()->GetMetric(wxAUI_DOCKART_CAPTION_SIZE));
+        m_caption_size = new wxSpinCtrl(this, ID_CaptionSize, wxString::Format(wxT("%d"), frame->GetDockArt()->GetMetric(wxAUI_DOCKART_CAPTION_SIZE)), wxDefaultPosition, wxDefaultSize, wxSP_ARROW_KEYS, 0, 100, frame->GetDockArt()->GetMetric(wxAUI_DOCKART_CAPTION_SIZE));
         s3->Add(1, 1, 1, wxEXPAND);
         s3->Add(new wxStaticText(this, wxID_ANY, wxT("Caption Size:")));
         s3->Add(m_caption_size);