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
@@ -105,13 +105,13 @@ int main( int argc, char** argv )
    {
        imshow("image", isColor ? image : gray);

-        int c = waitKey(0);
-        if( (c & 255) == 27 )
+        char c = (char)waitKey(0);
+        if( c == 27 )
        {
            cout << "Exiting ...\n";
            break;
        }
-        switch( (char)c )
+        switch( c )
        {
        case 'c':
            if( isColor )