为什么有时候waitkey 停不下来 的原因



从官方的API reference查到的，yes!

Note

This function is the only method in HighGUI that can fetch and handle events, so it needs to be called periodically for normal event processing unless HighGUI is used within an environment that takes care of event processing.

Note

The function only works if there is at least one HighGUI window created and the window is active. If there are several HighGUI windows, any of them can be active.