一、真相
二、代码
import os from time import sleep import tkinter import tkinter.filedialog import tkinter.messagebox from PIL import ImageGrab, Image root = tkinter.Tk() root.geometry('100x40+400+300') root.resizable(False, False) class MyCapture: def __init__(self, png): # 变量X和Y用来记录鼠标左键按下的位置 self.X = tkinter.IntVar(value=0) self.Y = tkinter.IntVar(value=0) # 获取屏幕尺寸 screenWidth = root.winfo_screenwidth() screenHeight = root.winfo_screenheight() # 创建顶级组件容器，与屏幕尺寸一样大 self.top = tkinter.Toplevel(root, width=screenWidth, height=screenHeight) # 不显示最大化、最小化按钮 self.top.overrideredirect(True) self.image = tkinter.PhotoImage(file=png) # 创建画布 self.canvas = tkinter.Canvas(self.top, bg='white', width=screenWidth, height=screenHeight) # 显示全屏截图，在全屏截图上进行区域截图 self.canvas.create_image(screenWidth // 2, screenHeight // 2, image=self.image) # 获取鼠标左键抬起的位置，取色 def onLeftButtonUp(event): im = Image.open(png) color = im.getpixel((event.x, event.y))[:3] color = map(lambda x: hex(x)[2:], color) color = map(lambda x: x if len(x) == 2 else '0' + x, color) color = '#' + ''.join(color) tkinter.messagebox.showinfo('', str(color)) # 关闭当前窗口 self.top.destroy() self.canvas.bind('<ButtonRelease-1>', onLeftButtonUp) self.canvas.pack(fill=tkinter.BOTH, expand=tkinter.YES) # 开始截图 def buttonCaptureClick(): # 最小化主窗口 root.state('icon') sleep(0.2) filename = 'temp.png' im = ImageGrab.grab() im.save(filename) im.close() # 显示全屏幕截图 w = MyCapture(filename) buttonCapture.wait_window(w.top) # 截图结束，恢复主窗口，并删除临时的全屏幕截图文件 root.state('normal') os.remove(filename) buttonCapture = tkinter.Button(root, text='取色', command=buttonCaptureClick) buttonCapture.place(x=10, y=10, width=80, height=20) # 启动消息主循环 root.mainloop()
