使用Grid布局时如何调整Tkinter Entry高度并实现文本自动换行？

哦，这个问题我之前也踩过坑！Tkinter里的Entry组件本质就是单行输入控件，所以哪怕你用ipady参数把它的高度拉高，它还是只能支持单行输入，文字只会在中间一行显示，根本没法自动换行。

要实现多行输入+自动换行的需求，你应该用Text组件来替代Entry，这才是Tkinter专门用来处理多行文本输入的控件。

修改后的代码示例 #

我把你原代码里的messageEntry部分替换成了Text组件，还做了一些适配性调整：

def sendMail(senderEmail, senderPassword):
    global server
    sendMailFont = ['Consolas', 10]
    sendMailWindow = Tk()
    sendMailWindow.title("Sendmail")
    sendMailWindow.resizable(False, False)
    sendMailWindow.focus_force()
    # sendMailWindow.iconbitmap('info icon.ico')
    sendMailWindow.config(bg = "#DCDCDC")
    loggedInLabel = Label(sendMailWindow, font = (sendMailFont), text = "Logged in as {}".format(senderEmail), bg = "#DCDCDC")
    loggedInLabel.grid(row = 0, column = 0)
    subjectLabel = Label(sendMailWindow, font = (sendMailFont), text = "Subject", bg = "#DCDCDC")
    subjectLabel.grid(row = 2, column = 0, sticky = "w")
    subjectEntry = Entry(sendMailWindow, font = (sendMailFont), bg = "#FFFFFF", width = 37)
    subjectEntry.grid(row = 3, column = 0, sticky = "w", ipady = 2)
    messageLabel = Label(sendMailWindow, font = (sendMailFont), text = "Message", bg = "#DCDCDC")
    messageLabel.grid(row = 5, column = 0, sticky = "w")
    
    # 替换Entry为Text组件，实现多行输入和自动换行
    messageText = Text(sendMailWindow, font = (sendMailFont), bg = "#FFFFFF", width = 35, height = 8, wrap="word")
    messageText.grid(row = 6, column = 0, sticky = "w")
    
    hiddenLabel = Label(sendMailWindow, font = ('Consolas', 1), text = "", bg = "#DCDCDC")
    hiddenLabel.grid(row = 1, column = 0, sticky = "we")
    hiddenLabel = Label(sendMailWindow, font = ('Consolas', 10), text = "", bg = "#DCDCDC")
    hiddenLabel.grid(row = 4, column = 0, sticky = "we")
    sendMailWindow.mainloop()

关键修改点说明 #

• 替换控件类型：把Entry换成Text，Text天生支持多行输入。
• 设置高度：用height参数控制显示的行数（这里设为8行），比ipady更直观。
• 自动换行：添加wrap="word"参数，实现按单词自动换行（如果想按字符换行可以用wrap="char"）。
• 获取内容：如果之后需要获取输入的消息内容，要改用messageText.get("1.0", END)，而不是Entry的get()方法。

这样修改后，用户就能在消息输入框里输入多行文本，并且内容会自动换行显示啦！

内容的提问来源于stack exchange，提问作者Andrej