Python 2.7 pygame中的combobox，python 2.7

如何在pygame（python 2.7）中创建组合框

我不想使用tk或wx或任何其他gui只是pygame

import pygame


class ComboBox(pygame):
    def __init__(self, items, editable, dropdownWidth, width, value):
        self.items = items
        self.editable = editable  # True, the user can type a new value False, the user can only choose from the options
        self.dropdownwidth = dropdownWidth
        self.width = width
        self.value = value # i dont think there is need to

    def onSelChange(self, selection):
        pass

    def onEditChange(self, text):
        pass

    def onFocus(self, focused):
        pass

    def onEnter(self):
        pass

    def refresh(self):
        pass

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哦，这是个好问题。组合框有相当一点微妙的复杂性。没有组合框，只有选项框或文本输入：或