这条语句是什么意思？int c = waitKey(0);

[nullnullptr]

int c = waitKey(0);
OpenCV 里面为什么可以这样用，这样有什么意义？

[小灸舞]

waitKey有两个作用：
1. It waits for x milliseconds for a key press. If a key was pressed during that time, it returns the key's ASCII code. Otherwise, it returns -1.
2It handles any windowing events, such as creating windows with cv::namedWindow(), or showing images with cv::imshow().

[nullnullptr]

引用 1 楼 qq423399099 的回复:

waitKey有两个作用： 1. It waits for x milliseconds for a key press. If a key was pressed during that time, it returns the key's ASCII code. Otherwise, it returns -1. 2It handles any windowing events, such as creating windows with cv::namedWindow(), or showing images with cv::imshow().

哇哇哇懂了！！！查了好久都没找到这样清楚的解释

[nullnullptr]

引用 1 楼 qq423399099 的回复:

waitKey有两个作用： 1. It waits for x milliseconds for a key press. If a key was pressed during that time, it returns the key's ASCII code. Otherwise, it returns -1. 2It handles any windowing events, such as creating windows with cv::namedWindow(), or showing images with cv::imshow().

好像很容易就能查到 不知道我之前怎么没找到

[paschen]

就调用这个函数嘛，只要知道这个函数是做什么很容易就明白了

[nullnullptr]

引用 4 楼 paschen 的回复:

就调用这个函数嘛，只要知道这个函数是做什么很容易就明白了

嗯嗯是啊 菜鸟一枚 懂了嘿嘿

[赵4老师]

VS IDE中，在不明白的符号上点鼠标右键，选转到定义。