fixed some more MSVC2010 warnings

samples/c/fback.cpp

@@ -6,7 +6,7 @@
 using namespace cv;
 
 void drawOptFlowMap(const Mat& flow, Mat& cflowmap, int step,
-                    double scale, const Scalar& color)
+                    double, const Scalar& color)
 {
     for(int y = 0; y < cflowmap.rows; y += step)
         for(int x = 0; x < cflowmap.cols; x += step)
@@ -18,7 +18,7 @@ void drawOptFlowMap(const Mat& flow, Mat& cflowmap, int step,
         }
 }
 
-int main(int argc, char** argv)
+int main(int, char**)
 {
     VideoCapture cap(0);
     

samples/c/find_obj_calonder.cpp

@@ -1,5 +1,7 @@
 //Calonder descriptor sample
+#include <stdio.h>
 
+#if 0
 #include <cxcore.h>
 #include <cv.h>
 #include <cvaux.h>
@@ -84,13 +86,14 @@ float CalcAffineReprojectionError(const vector<CvPoint>& p1, const vector<CvPoin
     
     return error;
 }
+#endif
 
-
-int main( int argc, char** argv )
+int main( int, char** )
 {
 	printf("calonder_sample is under construction\n");
 	return 0;
 
+#if 0
 	IplImage* test_image;
 	IplImage* train_image;
 	if (argc < 3)
@@ -302,4 +305,5 @@ int main( int argc, char** argv )
 	cvReleaseImage(&test_image);
 
 	return 0;
+#endif
 }

samples/c/grabcut.cpp

@@ -149,7 +149,7 @@ void GCApplication::setLblsInMask( int flags, Point p, bool isPr )
     }
 }
 
-void GCApplication::mouseClick( int event, int x, int y, int flags, void* param )
+void GCApplication::mouseClick( int event, int x, int y, int flags, void* )
 {
     // TODO add bad args check
     switch( event )

samples/c/watershed.cpp

@@ -14,7 +14,7 @@ IplImage* markers = 0;
 IplImage* img0 = 0, *img = 0, *img_gray = 0, *wshed = 0;
 CvPoint prev_pt = {-1,-1};
 
-void on_mouse( int event, int x, int y, int flags, void* param )
+void on_mouse( int event, int x, int y, int flags, void* )
 {
     if( !img )
         return;