Question

如何获取用户选择的颜色并将其用作tkinter框架的背景颜色？

list2 = ["red", "red", "red", "red", "blue", "yellow"];
droplist = OptionMenu(root, c, *list2)
droplist.config(width=15)
c.set('select your colour')
droplist.place(x=240, y=320)
root.configure(bg=c)

Answer 1

让我们通过填写一些缺失的片段来完成这项工作：

{
  "name": "test",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "start": "node node_modules/react-native/local-cli/cli.js start",
    "test": "jest"
  },
  "dependencies": {
    "react": "16.8.3",
    "react-native": "0.59.9",
    "react-native-gesture-handler": "^1.3.0",
    "react-native-vector-icons": "^6.6.0",
    "react-navigation": "^3.11.0",
    "styled-components": "^4.3.2"
  },
  "devDependencies": {
    "@babel/core": "^7.5.0",
    "@babel/runtime": "^7.5.1",
    "babel-jest": "^24.8.0",
    "jest": "^24.8.0",
    "metro-react-native-babel-preset": "^0.55.0",
    "react-test-renderer": "16.8.3"
  },
  "jest": {
    "preset": "react-native"
  }
}

主要缺少的部分是与import tkinter as tk COLORS = ["red", "blue", 'green', 'cyan', 'magenta', "yellow"] def change_color(*args): root.configure(bg=color.get()) root = tk.Tk() root.minsize(width=200, height=200) color = tk.StringVar(root) color.trace('w', change_color) color.set(COLORS[0]) om = tk.OptionMenu(root, color, *COLORS) label = tk.Label(root, text='Select your color') om.pack(side="top") label.pack(side="top") root.mainloop()关联的StringVar，您可以通过它进行询问。要将回调函数与OptionMenu关联，我们 trace 更改为OptionMenu。

如何在Tkinter中设置用户选择的背景色？

1 个答案: