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
@@ -74,19 +74,19 @@ int main( int argc, char** argv )

    for(;;)
    {
-        int c = waitKey(0);
+        char c = (char)waitKey(0);

-        if( (char)c == 27 )
+        if( c == 27 )
            break;

-        if( (char)c == 'r' )
+        if( c == 'r' )
        {
            markerMask = Scalar::all(0);
            img0.copyTo(img);
            imshow( "image", img );
        }

-        if( (char)c == 'w' || (char)c == ' ' )
+        if( c == 'w' || c == ' ' )
        {
            int i, j, compCount = 0;
            vector<vector<Point> > contours;