Question

我已经尝试通过遵循像here这样的一些指南，在Xubuntu 14.04上使用Python进行GUI编程。我希望在我的GUI中有一个背景图像，上面有任何按钮。 I searched on stackoverflow and came across a person having a similar issue。他的解决方案有效，但网格填满整个窗口，我再也看不到背景图像了。我该如何解决？这是我的代码：

#!/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()

Answer 1

在创建网格和/或按钮时传递valign和halign属性的值。这些属性的默认值为Gtk.Align.FILL，这使得它们可以覆盖给予它们的所有空间。而是选择Gtk.Align.START，Gtk.Align.END或Gtk.Align.CENTER。

覆盖中的Gtk + 3网格阻挡背景图像

1 个答案: