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
@@ -279,8 +279,8 @@ static void DrawOpenGLMSER(Mat img, Mat result)
    for (;;)
        {
        updateWindow("OpenGL");
-        int key = waitKey(40);
-        if ((key & 0xff) == 27)
+        char key = (char)waitKey(40);
+        if (key == 27)
            break;
        if (key == 0x20)
            rotateEnable = !rotateEnable;