Tkinter：如何使用單獨的Window要求用戶通過按鈕輸入并將該值回傳給原始函式

我目前必須只使用 Tkinter 用 Python 撰寫一個國際象棋游戲才能獲得我的高中文憑，我目前正在努力解決以下問題：當一個棋子到達后線時，它可以被提升。我想創建一個帶有 Buttons 的彈出視窗，用戶可以點擊按鈕來選擇他的 pawn 應該被提升到什么樣的棋子。它目前看起來像這樣：

def getPromotePawnPiece() -> str:
    optionsWindow = Toplevel()
    selected_piece = "None"
    pawnField = Button(optionsWindow, text="Pawn", anchor=W, command=lambda: 
                               returnPieceSelected("Pawn", optionsWindow, selected_piece))
    rookField = Button(optionsWindow, text="Rook", anchor=W, command=lambda: 
                               returnPieceSelected("Rook", optionsWindow, selected_piece))
    bishopField = Button(optionsWindow, text="Bishop", anchor=W, command=lambda: 
                               returnPieceSelected("Bishop", optionsWindow, selected_piece))
    knightField = Button(optionsWindow, text="Knight", anchor=W, command=lambda: 
                               returnPieceSelected("Knight", optionsWindow, selected_piece))
    queenField = Button(optionsWindow, text="Queen", anchor=W, command=lambda: 
                               returnPieceSelected("Queen", optionsWindow, selected_piece))

pawnField.grid(row=1, column=0, sticky=NSEW)
rookField.grid(row=1, column=1, sticky=NSEW)
bishopField.grid(row=1, column=3, sticky=NSEW)
knightField.grid(row=1, column=2, sticky=NSEW)
queenField.grid(row=1, column=4, sticky=NSEW)

def returnPieceSelected(selected_piece_via_button: str, window: Toplevel, selected_piece_var: 
str):
     window.destroy()
     selected_piece_var = selected_piece_via_button

視窗已成功創建，但我無法獲取有關哪個按鈕已被單擊到原始根視窗的資訊 如果有幫助：“主”視窗是全域創建的，在 Pawn 到達后呼叫 getPromotePiece()最后一行

uj5u.com熱心網友回復：

首先使用StringVarfor selected_piece，這樣就可以在里面設定了returnPieceSelected()。

然后使用optionsWindow.wait_window()insidegetPromotePawnPiece()等待選擇：

def returnPieceSelected(selected_piece_via_button: str, window: Toplevel, selected_piece_var: StringVar):
    window.destroy()
    # save selection
    selected_piece_var.set(selected_piece_via_button)

def getPromotePawnPiece() -> str:

    optionsWindow = Toplevel()
    selected_piece = StringVar(value="None") # use StringVar instead of normal string
    pawnField = Button(optionsWindow, text="Pawn", anchor=W, command=lambda:
                               returnPieceSelected("Pawn", optionsWindow, selected_piece))
    rookField = Button(optionsWindow, text="Rook", anchor=W, command=lambda:
                               returnPieceSelected("Rook", optionsWindow, selected_piece))
    bishopField = Button(optionsWindow, text="Bishop", anchor=W, command=lambda:
                               returnPieceSelected("Bishop", optionsWindow, selected_piece))
    knightField = Button(optionsWindow, text="Knight", anchor=W, command=lambda:
                               returnPieceSelected("Knight", optionsWindow, selected_piece))
    queenField = Button(optionsWindow, text="Queen", anchor=W, command=lambda:
                               returnPieceSelected("Queen", optionsWindow, selected_piece))

    pawnField.grid(row=1, column=0, sticky=NSEW)
    rookField.grid(row=1, column=1, sticky=NSEW)
    bishopField.grid(row=1, column=3, sticky=NSEW)
    knightField.grid(row=1, column=2, sticky=NSEW)
    queenField.grid(row=1, column=4, sticky=NSEW)

    # wait for user selection
    optionsWindow.wait_window()

    # return user selection
    return selected_piece.get()

標籤：Python 特金特

上一篇：嘗試用tkinter觀察兩個IntVar并選擇最低的數字

下一篇：如何在使用Tkinter選擇和洗掉后創建單選按鈕時取消選擇它？