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
@@ -25,7 +25,6 @@ int main( int argc, char** argv )

    for(;;)
    {
-        char key;
        int i, count = (unsigned)rng%100 + 1;

        vector<Point> points;
@@ -58,7 +57,7 @@ int main( int argc, char** argv )

        imshow("hull", img);

-        key = (char)waitKey();
+        char key = (char)waitKey();
        if( key == 27 || key == 'q' || key == 'Q' ) // 'ESC'
            break;
    }