diff --git a/samples/sashtest/sashtest.cpp b/samples/sashtest/sashtest.cpp
index 9ae3762560..6bcf61a6ce 100644
--- a/samples/sashtest/sashtest.cpp
+++ b/samples/sashtest/sashtest.cpp
@@ -43,7 +43,9 @@ bool MyApp::OnInit(void)
   // Create the main frame window
 
   frame = new MyFrame(NULL, -1, "Sash Demo", wxPoint(0, 0), wxSize(500, 400),
-      wxDEFAULT_FRAME_STYLE | wxHSCROLL | wxVSCROLL);
+                      wxDEFAULT_FRAME_STYLE |
+                      wxNO_FULL_REPAINT_ON_RESIZE |
+                      wxHSCROLL | wxVSCROLL);
 
   // Give it an icon (this is ignored in MDI mode: uses resources)
 #ifdef __WXMSW__
@@ -98,7 +100,11 @@ MyFrame::MyFrame(wxWindow *parent, const wxWindowID id, const wxString& title, c
   // Create some dummy layout windows
 
   // A window like a toolbar
-  wxSashLayoutWindow* win = new wxSashLayoutWindow(this, ID_WINDOW_TOP, wxDefaultPosition, wxSize(200, 30), wxNO_BORDER|wxSW_3D);
+  wxSashLayoutWindow* win =
+      new wxSashLayoutWindow(this, ID_WINDOW_TOP,
+                             wxDefaultPosition, wxSize(200, 30),
+                             wxNO_BORDER | wxSW_3D | wxCLIP_CHILDREN);
+
   win->SetDefaultSize(wxSize(1000, 30));
   win->SetOrientation(wxLAYOUT_HORIZONTAL);
   win->SetAlignment(wxLAYOUT_TOP);
@@ -108,7 +114,9 @@ MyFrame::MyFrame(wxWindow *parent, const wxWindowID id, const wxString& title, c
   m_topWindow = win;
 
   // A window like a statusbar
-  win = new wxSashLayoutWindow(this, ID_WINDOW_BOTTOM, wxDefaultPosition, wxSize(200, 30), wxNO_BORDER|wxSW_3D);
+  win = new wxSashLayoutWindow(this, ID_WINDOW_BOTTOM,
+                               wxDefaultPosition, wxSize(200, 30),
+                               wxNO_BORDER | wxSW_3D | wxCLIP_CHILDREN);
   win->SetDefaultSize(wxSize(1000, 30));
   win->SetOrientation(wxLAYOUT_HORIZONTAL);
   win->SetAlignment(wxLAYOUT_BOTTOM);
@@ -118,7 +126,9 @@ MyFrame::MyFrame(wxWindow *parent, const wxWindowID id, const wxString& title, c
   m_bottomWindow = win;
 
   // A window to the left of the client window
-  win = new wxSashLayoutWindow(this, ID_WINDOW_LEFT1, wxDefaultPosition, wxSize(200, 30), wxNO_BORDER|wxSW_3D);
+  win = new wxSashLayoutWindow(this, ID_WINDOW_LEFT1,
+                               wxDefaultPosition, wxSize(200, 30),
+                               wxNO_BORDER | wxSW_3D | wxCLIP_CHILDREN);
   win->SetDefaultSize(wxSize(120, 1000));
   win->SetOrientation(wxLAYOUT_VERTICAL);
   win->SetAlignment(wxLAYOUT_LEFT);
@@ -134,7 +144,9 @@ MyFrame::MyFrame(wxWindow *parent, const wxWindowID id, const wxString& title, c
   m_leftWindow1 = win;
 
   // Another window to the left of the client window
-  win = new wxSashLayoutWindow(this, ID_WINDOW_LEFT2, wxDefaultPosition, wxSize(200, 30), wxNO_BORDER|wxSW_3D);
+  win = new wxSashLayoutWindow(this, ID_WINDOW_LEFT2,
+                               wxDefaultPosition, wxSize(200, 30),
+                               wxNO_BORDER | wxSW_3 | wxCLIP_CHILDREND);
   win->SetDefaultSize(wxSize(120, 1000));
   win->SetOrientation(wxLAYOUT_VERTICAL);
   win->SetAlignment(wxLAYOUT_LEFT);
@@ -206,8 +218,10 @@ void MyFrame::OnSashDrag(wxSashEvent& event)
 void MyFrame::OnNewWindow(wxCommandEvent& WXUNUSED(event))
 {
       // Make another frame, containing a canvas
-      MyChild *subframe = new MyChild(frame, "Canvas Frame", wxPoint(10, 10), wxSize(300, 300),
-                             wxDEFAULT_FRAME_STYLE);
+      MyChild *subframe = new MyChild(frame, "Canvas Frame",
+                                      wxPoint(10, 10), wxSize(300, 300),
+                                      wxDEFAULT_FRAME_STYLE |
+                                      wxNO_FULL_REPAINT_ON_RESIZE);
 
       char titleBuf[100];
       sprintf(titleBuf, "Canvas Frame %d", winNumber);
@@ -263,8 +277,9 @@ BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
 END_EVENT_TABLE()
 
 // Define a constructor for my canvas
-MyCanvas::MyCanvas(wxWindow *parent, const wxPoint& pos, const wxSize& size):
- wxScrolledWindow(parent, -1, pos, size, wxSUNKEN_BORDER)
+MyCanvas::MyCanvas(wxWindow *parent, const wxPoint& pos, const wxSize& size)
+        : wxScrolledWindow(parent, -1, pos, size,
+                           wxSUNKEN_BORDER | wxNO_FULL_REPAINT_ON_RESIZE)
 {
     SetBackgroundColour(* wxWHITE);
 }