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我一直在試圖在Xubuntu 14.04上使用Python進行GUI編程，方法是遵循如下一些指南here。我想在我的GUI中有一個背景圖像，並在其上有任何按鈕。 I searched on stackoverflow and came across a person having a similar issue。他的解決方案奏效了，但網格填滿了整個窗口，我無法再看到背景圖像。我該如何解決？這裏是我的代碼：爲valign和halign屬性創建網格時和Gtk + 3柵格遮擋背景圖像覆蓋
#!/usr/bin/env python
# -*- coding: utf-8 -*-:
from gi.repository import Gtk #Here we are importing the GTK3 library to use in our program
class mywindow(Gtk.Window):
def __init__(self):
#In the class's constructor, we have to call the constructor of the super class. In addition, we tell it to set
#the value of the property title to Media Manager v1.0
Gtk.Window.__init__(self, title="Media Manager v1.0") #Creates an Empty Window
#use an overlay for the background image
self.overlay = Gtk.Overlay()
self.add(self.overlay)
self.background = Gtk.Image.new_from_file('Background.jpg')
self.overlay.add(self.background)
self.grid = Gtk.Grid()
self.button1 = Gtk.Button(label="Hello")
self.button1.connect("clicked", self.on_button1_clicked)
self.grid.add(self.button1)
self.overlay.add_overlay(self.grid)
#Gtk.Window.set_default_size(self, 400,325)
Gtk.Window.set_position(self, Gtk.WindowPosition.CENTER)
def on_button1_clicked(self, button):
print "Hello"
def on_button2_clicked(self, button):
print "Exiting..."
def main():
window = mywindow()
#connect to the window's delete event to ensure that the application is terminated if we click on the x to close the window
window.connect("delete-event", Gtk.main_quit)
#Display the window
window.show_all()
#Finally, start the GTK+ processing loop which we quit when the winndow is closed.
Gtk.main()
return 0
if __name__ == '__main__':
main()