update samples: waitKey() usage

Original commit is a5f19f7dd6ae5bc93f73e0417a9e0bfd34c01672
2016-08-12 15:11:30 +02:00
parent 4e7b521438
commit 6d34d6b47e
76 changed files with 142 additions and 154 deletions
@@ -351,7 +351,7 @@ int main( int argc, char** argv )
        for( k = 0; k < small_canvas.rows; k += 16 )
            line(small_canvas, Point(0, k), Point(small_canvas.cols, k), Scalar(0,255,0), 1);
        imshow("rectified", small_canvas);
-        int c = waitKey(0);
+        char c = (char)waitKey(0);
        if( c == 27 || c == 'q' || c == 'Q' )
            break;
    }