[英]How to remember tkinter window position in python 3?
我有一個 tkinter gui,我希望它在重新啟動時保留原來的窗口位置和大小。
這是一個說明如何設置特定位置和尺寸的答案,但沒有說明如何記住設置: 如何指定 Tkinter 窗口打開的位置?
非常感謝任何幫助。
從會話到會話記住設置的唯一方法是將它們寫入文件。 因此,獲取根窗口幾何圖形(它是一個字符串)並將其寫入文件。 如果希望函數作為鈎子自動執行,請將其綁定到“<Configure>”事件:
def save_size(event):
with open("myapp.conf", "w") as conf:
conf.write(root.geometry()) # Assuming root is the root window
root.bind("<Configure>",save_size)
您可以稍后從文件中讀取幾何圖形並恢復它。
#Here I save the x and y position of the window to a file "myapp.conf"
#Here I see if the file exists.
if os.path.isfile("myapp.conf"):
#Here I read the X and Y positon of the window from when I last closed it.
with open("myapp.conf", "r") as conf:
root.geometry(conf.read())
else:
#Default window position.
root.geometry('610x270+0+0')
def on_close():
#custom close options, here's one example:
#close = messagebox.askokcancel("Close", "Would you like to close the program?")
#if close:
#Here I write the X Y position of the window to a file "myapp.conf"
with open("myapp.conf", "w") as conf:
conf.write(root.geometry())
root.destroy()
root.protocol("WM_DELETE_WINDOW", on_close)
我花了很多時間來理解這個的實際實現。 所以我想分享我的最終代碼。 基於 DyZ 建議。
我沒有按照建議使用<Configure>
事件,因為只有在退出前保存對我來說就足夠了。
class Window(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
# ...
# bla bla bla
# My GUI codes came here
# ...
# Try to load last saved window data
self.statusbar['text']="reading ini file..."
ini_file_path = "mapedit.ini"
try:
# if the file is there
# get geometry from file
ini_file = open(ini_file_path,'r')
self.geometry(ini_file.read())
self.statusbar['text']= "ini file read"
ini_file.close()
except:
# if the file is not there, create the file and use default
# then use default geometry.
self.statusbar['text']="ini file not found. New file created."
ini_file = open(ini_file_path, 'w')
ini_file.close()
self.geometry("640x400+100+200")
def client_exit(self):
self.save_geo()
self.destroy()
def save_geo(self):
# save current geometry to the ini file
try:
with open("mapedit.ini", 'w') as ini_file:
ini_file.write(self.geometry())
self.statusbar['text']="geo sv"
ini_file.close()
except:
statusbar['text']="ini file not found"
'''
This is where I created GUI instance
'''
if __name__ == "__main__":
win = Window()
# attach deletion handler to 'client_exit' method
win.protocol("WM_DELETE_WINDOW", win.client_exit)
win.mainloop()
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