diff --git a/apps/sample/trimesh_ant_freeglut/main.cpp b/apps/sample/trimesh_ant_freeglut/main.cpp
index 7a661c1a..278ab359 100644
--- a/apps/sample/trimesh_ant_freeglut/main.cpp
+++ b/apps/sample/trimesh_ant_freeglut/main.cpp
@@ -21,12 +21,12 @@
  *                                                                           *
  ****************************************************************************/
 
-/**
- * Minimal   trimesh viewer made with AntTweakBar and freglut
- *
- * This sample shows how to use togheter: 
- * - the trimesh loading and initialization
- * - basic usage of the default manipulators (the "Trackball")
+/**
+ * Minimal   trimesh viewer made with AntTweakBar and freglut
+ *
+ * This sample shows how to use togheter: 
+ * - the trimesh loading and initialization
+ * - basic usage of the default manipulators (the "Trackball")
  */
 
 
@@ -120,7 +120,7 @@ void Display(){
 		track.center=vcg::Point3f(0, 0, 0);
 		track.radius= 1;
 		track.GetView();
-		track.Apply(false);
+		track.Apply();
 		glPushMatrix();
 		float d=1.0f/mesh.bbox.Diag();
 		vcg::glScale(d);
diff --git a/apps/sample/trimesh_ant_qt/glwidget.cpp b/apps/sample/trimesh_ant_qt/glwidget.cpp
index 98f6c782..53583290 100644
--- a/apps/sample/trimesh_ant_qt/glwidget.cpp
+++ b/apps/sample/trimesh_ant_qt/glwidget.cpp
@@ -128,7 +128,7 @@ void GLWidget::paintGL ()
     track.radius= 1;
     track.GetView();
     glPushMatrix();
-    track.Apply(false);
+    track.Apply();
     glPushMatrix();
     if(mesh.vert.size()>0)
     {
diff --git a/apps/unsupported/shadevis/shadevis.cpp b/apps/unsupported/shadevis/shadevis.cpp
index 7b9488ad..bcbc7ae6 100644
--- a/apps/unsupported/shadevis/shadevis.cpp
+++ b/apps/unsupported/shadevis/shadevis.cpp
@@ -271,7 +271,7 @@ void  ViewDisplay (void)
   if(Q==&QL) DrawLightVector();	
   QL.GetView();
   QV.GetView();
-  QV.Apply(false);
+  QV.Apply();
   if(ShowDirFlag) DrawViewVector();
 
   float d = 2.0/m.bbox.Diag();
diff --git a/apps/unsupported/trackball_SDL/trackball_sdl.cpp b/apps/unsupported/trackball_SDL/trackball_sdl.cpp
index 0043f408..967644ed 100644
--- a/apps/unsupported/trackball_SDL/trackball_sdl.cpp
+++ b/apps/unsupported/trackball_SDL/trackball_sdl.cpp
@@ -203,7 +203,7 @@ void display(){
     glTranslate( -observerPos );
 
 		track.GetView();
-    track.Apply(false);
+	track.Apply();
     glPushMatrix();
     float d=mesh.bbox.Diag();
     glScale(1.5f/d);
diff --git a/apps/unsupported/trimesh_SDL/trimesh_sdl.cpp b/apps/unsupported/trimesh_SDL/trimesh_sdl.cpp
index 11aa4d40..2a03c09e 100644
--- a/apps/unsupported/trimesh_SDL/trimesh_sdl.cpp
+++ b/apps/unsupported/trimesh_SDL/trimesh_sdl.cpp
@@ -150,7 +150,7 @@ void display(){
     track.radius= 1;
 
 		track.GetView();
-    track.Apply(false);
+	track.Apply();
     glPushMatrix();
     float d=1.0f/mesh.bbox.Diag();
     glScale(d);
diff --git a/wrap/gui/activecoordinateframe.cpp b/wrap/gui/activecoordinateframe.cpp
index 0fb71abe..9891d18e 100644
--- a/wrap/gui/activecoordinateframe.cpp
+++ b/wrap/gui/activecoordinateframe.cpp
@@ -67,7 +67,7 @@ void ActiveCoordinateFrame::Render(QGLWidget* glw)
   manipulator->radius=size;
   manipulator->center=position;
   manipulator->GetView();
-  manipulator->Apply(false);  
+  manipulator->Apply();
    
   MovableCoordinateFrame::Render(glw);
   
diff --git a/wrap/gui/trackball.cpp b/wrap/gui/trackball.cpp
index 9f561195..c445a814 100644
--- a/wrap/gui/trackball.cpp
+++ b/wrap/gui/trackball.cpp
@@ -112,14 +112,6 @@ void Trackball::Apply () {
   glTranslate (-center);
 }
 
-void Trackball::Apply(bool ToDraw) {
-  Apply();
-  if(ToDraw){
-    DrawPostApply();
-  }
-}
-
-
 void Trackball::ApplyInverse() {
   glTranslate(center);
   glMultMatrix(track.InverseMatrix());
diff --git a/wrap/gui/trackball.h b/wrap/gui/trackball.h
index 27901f9a..fc70a36a 100644
--- a/wrap/gui/trackball.h
+++ b/wrap/gui/trackball.h
@@ -248,18 +248,15 @@ public:
     @brief Initialize the camera instance.
   */
   void GetView();
-  /*!
-    @brief Apply the current transformation on the OpenGL modelview matrix.
 
-    @param Draw true if has to call DrawPostApply() after the application.
-  */
-  void Apply(bool Draw);
   /*!
-    @brief Old application of the transformation.
+    @brief Application of the transformation.
+
+    @warning This function does \b not draw anything. You have to call DrawPostApply() after drawing everything.
 
-    @warning This function does \b not call DrawPostApply() after the application.
   */
   void Apply ();
+
   /*!
     @brief Draw the current manipulator.
 
@@ -269,6 +266,7 @@ public:
     @warning This function assumes that the OpenGL modelview matrix has been initialized with Apply ().
   */
   void DrawPostApply();
+
   /*!
     @brief Apply the \b inverse of current transformation on the OpenGL modelview matrix.
   */