How does Opencv create a window? Method of creating and displaying windows through opencv

1. NamedWindow(): used to create a window and name it;
2. Imshow(): display a window, which can be called directly to display a window
3. DestroyAllWindows(): close all windows;
4. ResizeWindow: Sets the size of the window.

import cv2 # 导入opencv

cv2.namedWindow('new',cv2.WINDOW_NORMAL) 
# WINDOW_AUTOSIZE 窗口自动大小，不能调整窗口大小
# WINDOW_NORMAL 窗口可以调整大小
cv2.resizeWindow('new',600,400)
# 设置窗口的大小，new是被设置窗口的名称，600是宽度，400是高度
cv2.imshow('new',0)
# 显示窗口，new是被显示的窗口名称，0是输入的数组，没有就填0
cv2.waitKey(0)
# 显示窗口等待时间，单位是毫秒，数值为0就一直显示