調整大小后如何獲取Tkinter Text小部件的高度？

Question

調整大小后如何獲取Tkinter Text小部件的高度？ 如何獲得新的行數高度？

import tkinter as tk

class MainWindow:
    def __init__(self, parent):
        self.viewText = tk.Text(parent, height=32, width=20)
        self.viewText.grid(row=0, column=0, sticky=tk.NSEW)

        parent.grid_rowconfigure(0, weight=1)
        parent.grid_columnconfigure(0, weight=1)

if __name__ == "__main__":
    app = tk.Tk()
    window = MainWindow(app)
    app.mainloop()

Answer 1

綁定<Configure>事件。 例如：

import tkinter.font as tkfont

def on_configure(ev):
    """Get the current font and convert the pixel size into character sizes"""
    font = tkfont.nametofont(ev.widget.cget("font"))
    width = int(ev.width / font.measure("0"))
    height = int(ev.height / font.metrics('linespace'))
    print("{0}x{1}".format(width, height))

text.bind('<Configure>', on_configure)