diff --git a/samples/image/canvas.cpp b/samples/image/canvas.cpp
index 42a4d44bc6..9a634fed4f 100644
--- a/samples/image/canvas.cpp
+++ b/samples/image/canvas.cpp
@@ -36,81 +36,6 @@
 #include "canvas.h"
 
 
-// ============================================================================
-// implementations
-// ============================================================================
-
-class ImageRGBMatcher
-{
-public:
-    ImageRGBMatcher(const wxImage& image, int tolerance)
-        : m_image(image)
-        , m_tolerance(tolerance)
-    {
-    }
-
-    bool match(const wxImage& other)
-    {
-        if ( other.GetWidth() != m_image.GetWidth() )
-            return false;
-
-        if ( other.GetHeight() != m_image.GetHeight() )
-            return false;
-
-        if ( memcmp(other.GetData(), m_image.GetData(),
-                    other.GetWidth()*other.GetHeight()*3) == 0 )
-            return true;
-
-        const unsigned char* d1 = m_image.GetData();
-        const unsigned char* d2 = other.GetData();
-        for ( int x = 0; x < m_image.GetWidth(); ++x )
-        {
-            for ( int y = 0; y < m_image.GetHeight(); ++y )
-            {
-                const unsigned char diff = *d1 > * d2 ? *d1 - *d2 : *d2 - *d1;
-                if (diff > m_tolerance)
-                {
-                    m_diffDesc.Printf
-                               (
-                                    "first mismatch is at (%d, %d) which "
-                                    "has value 0x%06x instead of the "
-                                    "expected 0x%06x",
-                                    x, y, *d2, *d1
-                               );
-
-                    // Don't show all mismatches, there may be too many of them.
-                    return false;
-                }
-
-                ++d1;
-                ++d2;
-            }
-        }
-
-        // We can only get here when the images are different AND we've not exited the
-        // method from the loop. That implies the tolerance must have caused this.
-        wxASSERT_MSG(m_tolerance > 0, "Unreachable without tolerance");
-
-        return true;
-    }
-
-private:
-    const wxImage m_image;
-    const int m_tolerance;
-    mutable wxString m_diffDesc;
-};
-
-inline ImageRGBMatcher RGBSameAs(const wxImage& image)
-{
-    return ImageRGBMatcher(image, 0);
-}
-
-// Allows small differences (within given tolerance) for r, g, and b values.
-inline ImageRGBMatcher RGBSimilarTo(const wxImage& image, int tolerance)
-{
-    return ImageRGBMatcher(image, tolerance);
-}
-
 //-----------------------------------------------------------------------------
 // MyCanvas
 //-----------------------------------------------------------------------------
@@ -181,16 +106,6 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
     else
     {
         my_toucan = wxBitmap(image);
-        bool result = false;
-        {
-                if( my_toucan.IsOk() )
-                {
-                    auto match = RGBSimilarTo( my_toucan.ConvertToImage() , 2 );
-                    result = match.match(image);
-                }
-
-        }
-
     }
 
     my_toucan_flipped_horiz = wxBitmap(image.Mirror(true));
diff --git a/samples/image/image.cpp b/samples/image/image.cpp
index 294a4f0220..eb65cd2ffc 100644
--- a/samples/image/image.cpp
+++ b/samples/image/image.cpp
@@ -1012,6 +1012,10 @@ protected:
     }
 };
 
+// ============================================================================
+// implementations
+// ============================================================================
+
 //-----------------------------------------------------------------------------
 // MyImageFrame
 //-----------------------------------------------------------------------------
@@ -1153,7 +1157,6 @@ MyFrame::MyFrame()
     // 500 width * 2750 height
     m_canvas->SetScrollbars( 10, 10, 50, 275 );
     m_canvas->SetCursor(wxImage("cursor.png"));
-
 }
 
 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
diff --git a/samples/minimal/minimal.cpp b/samples/minimal/minimal.cpp
old mode 100755
new mode 100644
index 8a54da7680..470e765423
--- a/samples/minimal/minimal.cpp
+++ b/samples/minimal/minimal.cpp
@@ -63,8 +63,6 @@ public:
     // event handlers (these functions should _not_ be virtual)
     void OnQuit(wxCommandEvent& event);
     void OnAbout(wxCommandEvent& event);
-    void OnPaint(wxPaintEvent& event);
-    void OnClick(wxMouseEvent& event);
 
 private:
     // any class wishing to process wxWidgets events must use this macro
@@ -97,8 +95,6 @@ enum
 wxBEGIN_EVENT_TABLE(MyFrame, wxFrame)
     EVT_MENU(Minimal_Quit,  MyFrame::OnQuit)
     EVT_MENU(Minimal_About, MyFrame::OnAbout)
-    EVT_PAINT( MyFrame::OnPaint)
-    EVT_LEFT_DOWN( MyFrame::OnClick)
 wxEND_EVENT_TABLE()
 
 // Create a new application object: this macro will allow wxWidgets to create
@@ -181,18 +177,6 @@ MyFrame::MyFrame(const wxString& title)
 #endif // wxUSE_STATUSBAR
 }
 
-void MyFrame::OnPaint(wxPaintEvent& event)
-{
-    wxPaintDC dc(this);
-    wxRect update = GetUpdateRegion().GetBox();
-    printf("update %d,%d,%d,%d\n",update.GetX(), update.GetY(), update.GetWidth(), update.GetHeight());
-}
-
-void MyFrame::OnClick(wxMouseEvent& event)
-{
-    wxRect r( event.GetX(), event.GetY(),2,2);
-    RefreshRect(r);
-}
 
 // event handlers