[python]使用滑鼠指定範圍螢幕截圖，儲存截圖+將截圖寫入剪貼簿

 1.安裝元件

pip install opencv-python

2.參考程式碼

import cv2

import time,PIL,os

from PIL import ImageGrab

import numpy as np

import tkinter as tk

from tkinter import *

import win32clipboard as clip

from ctypes import *

import win32con

window = tk.Tk()

window.wm_attributes('-topmost',1)  #固定最上層

window.wm_attributes('-toolwindow',1)  #去除最大最小化按鈕

window.resizable(0,0)  #禁止改變大小

window.title('螢幕截圖')

window.geometry("270x170+1370+250")

window.focus_set()

#截图

def cut():

    global img

    scrren_cut()

    img = cv2.imread('screen.jpg')

    cv2.namedWindow('image')

    cv2.setMouseCallback('image', on_mouse)

    cv2.imshow('image', img)

    cv2.waitKey(0)

    os.remove('screen.jpg')

def scrren_cut():

    beg = time.time()

    debug = False

    # img = ImageGrab.grab(bbox=(250, 161, 1141, 610))

    image = ImageGrab.grab()

    image.save("screen.jpg")

    # PIL image to OpenCV image

def on_mouse(event, x, y, flags, param):

    global img, point1, point2

    img2 = img.copy()

    if event == cv2.EVENT_LBUTTONDOWN:         #左鍵點擊

        point1 = (x,y)

        cv2.circle(img2, point1, 10, (0,255,0), 5)

        cv2.imshow('image', img2)

    elif event == cv2.EVENT_MOUSEMOVE and (flags & cv2.EVENT_FLAG_LBUTTON):               #按住左鍵拖曳

        cv2.rectangle(img2, point1, (x,y), (255,0,0), 5)

        cv2.imshow('image', img2)

    elif event == cv2.EVENT_LBUTTONUP:         #左鍵放開

        point2 = (x,y)

        cv2.rectangle(img2, point1, point2, (0,0,255), 5)

        cv2.imshow('image', img2)

        min_x = min(point1[0],point2[0])    

        min_y = min(point1[1],point2[1])

        width = abs(point1[0] - point2[0])

        height = abs(point1[1] -point2[1])

        cut_img = img[min_y:min_y+height, min_x:min_x+width]

        cv2.imwrite('cut.bmp', cut_img)

        aString=windll.user32.LoadImageW(0,"cut.bmp",win32con.IMAGE_BITMAP,0,0,win32con.LR_LOADFROMFILE)

        print(aString)

        if aString !=0: ## 寫入剪貼簿並關閉CV視窗

            clip.OpenClipboard()

            clip.EmptyClipboard()

            clip.SetClipboardData(win32con.CF_BITMAP, aString)

            clip.CloseClipboard()

            cv2.destroyAllWindows()

window.bind("<F11>",lambda event:cut()) #F11截圖

window.mainloop()