diff --git a/common/rfb/ScaleFilters.cxx b/common/rfb/ScaleFilters.cxx
new file mode 100644
index 0000000..d5530b7
--- /dev/null
+++ b/common/rfb/ScaleFilters.cxx
@@ -0,0 +1,87 @@
+/* Copyright (C) 2006 TightVNC Team.  All Rights Reserved.
+ *    
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+#include <string.h>
+#include <assert.h>
+#include <math.h>
+
+#include <rfb/ScaleFilters.h>
+
+using namespace rfb;
+
+//
+// -=- 1-D filters functions
+//
+
+// Nearest neighbor filter function
+double nearest_neighbor(double x) {
+  if (x < -0.5) return 0.0;
+  if (x < 0.5) return 1.0;
+  return 0.0;
+}
+
+// Linear filter function
+double linear(double x) {
+  if (x < -1.0) return 0.0;
+  if (x < 0.0) return 1.0+x;
+  if (x < 1.0) return 1.0-x;
+  return 0.0;
+}
+
+// Cubic filter functions
+double cubic(double x) {
+  double t;
+  if (x < -2.0) return 0.0;
+  if (x < -1.0) {t = 2.0+x; return t*t*t/6.0;}
+  if (x < 0.0) return (4.0+x*x*(-6.0+x*-3.0))/6.0;
+  if (x < 1.0) return (4.0+x*x*(-6.0+x*3.0))/6.0;
+  if (x < 2.0) {t = 2.0-x; return t*t*t/6.0;}
+  return 0.0;
+}
+
+// Sinc filter function
+double sinc(double x) {
+  if (x == 0.0) return 1.0;
+  else return sin(pi*x)/(pi*x);
+}
+
+
+//
+// -=- ScaleFilters class
+//
+
+SFilter &ScaleFilters::operator[](unsigned int filter_id) {
+  assert(filter_id < scaleFilterMaxNumber);
+  return filters[filter_id];
+}
+
+void ScaleFilters::initFilters() {
+  filters[scaleFilterNearestNeighbor] = create("Nearest neighbor", 0.5, nearest_neighbor);
+  filters[scaleFilterBilinear] = create("Bilinear", 1, linear);
+  filters[scaleFilterBicubic] = create("Bicubic", 2, cubic);
+  filters[scaleFilterSinc]  = create("Sinc", 4, sinc);
+}
+
+SFilter ScaleFilters::create(char *name_, double radius_, filter_func func_) {
+  SFilter filter;
+  strncpy(filter.name, name_, sizeof(filter.name)-1); 
+  filter.name[sizeof(filter.name)-1] = '\0';
+  filter.radius = radius_;
+  filter.func = func_;
+  return filter;
+}
\ No newline at end of file
diff --git a/common/rfb/ScaleFilters.h b/common/rfb/ScaleFilters.h
index d4da365..0ec0730 100644
--- a/common/rfb/ScaleFilters.h
+++ b/common/rfb/ScaleFilters.h
@@ -22,9 +22,6 @@
 //  
 // 
 
-#include <assert.h>
-#include <math.h>
-
 namespace rfb {
 
   typedef double (*filter_func)(double x);
@@ -39,42 +36,6 @@
   const unsigned int scaleFilterMaxNumber = 3;
 
   //
-  // -=- 1-D filters functions
-  //
-
-  // Nearest neighbor filter function
-  double nearest_neighbor(double x) {
-    if (x < -0.5) return 0.0;
-    if (x < 0.5) return 1.0;
-    return 0.0;
-  }
-
-  // Linear filter function
-  double linear(double x) {
-    if (x < -1.0) return 0.0;
-    if (x < 0.0) return 1.0+x;
-    if (x < 1.0) return 1.0-x;
-    return 0.0;
-  }
-
-  // Cubic filter functions
-  double cubic(double x) {
-    double t;
-    if (x < -2.0) return 0.0;
-    if (x < -1.0) {t = 2.0+x; return t*t*t/6.0;}
-    if (x < 0.0) return (4.0+x*x*(-6.0+x*-3.0))/6.0;
-    if (x < 1.0) return (4.0+x*x*(-6.0+x*3.0))/6.0;
-    if (x < 2.0) {t = 2.0-x; return t*t*t/6.0;}
-    return 0.0;
-  }
-
-  // Sinc filter function
-  double sinc(double x) {
-    if (x == 0.0) return 1.0;
-    else return sin(pi*x)/(pi*x);
-  }
-
-  //
   // -=- Scale filters structures and routines
   //
 
@@ -97,27 +58,12 @@
   public:
     ScaleFilters() { initFilters(); };
 
-    SFilter &operator[](unsigned int filter_id) {
-      assert(filter_id < scaleFilterMaxNumber);
-      return filters[filter_id];
-    }
+    SFilter &operator[](unsigned int filter_id);
 
   protected:
-    void initFilters() {
-      filters[scaleFilterNearestNeighbor] = create("Nearest neighbor", 0.5, nearest_neighbor);
-      filters[scaleFilterBilinear] = create("Bilinear", 1, linear);
-      filters[scaleFilterBicubic] = create("Bicubic", 2, cubic);
-      filters[scaleFilterSinc]  = create("Sinc", 4, sinc);
-    }
+    void initFilters();
 
-    SFilter create(char *name_, double radius_, filter_func func_) {
-      SFilter filter;
-      strncpy(filter.name, name_, sizeof(filter.name)-1); 
-      filter.name[sizeof(filter.name)-1] = '\0';
-      filter.radius = radius_;
-      filter.func = func_;
-      return filter;
-    }
+    SFilter create(char *name_, double radius_, filter_func func_);
 
     SFilter filters[scaleFilterMaxNumber+1];
   };
diff --git a/common/rfb/rfb.dsp b/common/rfb/rfb.dsp
index b8f6e47..cfabeba 100644
--- a/common/rfb/rfb.dsp
+++ b/common/rfb/rfb.dsp
@@ -275,6 +275,10 @@
 # End Source File
 # Begin Source File
 
+SOURCE=.\ScaleFilters.cxx
+# End Source File
+# Begin Source File
+
 SOURCE=.\SConnection.cxx
 # End Source File
 # Begin Source File