pythongtk3向Widg添加图像

Question

我有以下片段：

def updateImages(self):
  filename = '.\scripts\file.png'
  self.image = Gtk.Image()
  image.set_from_file(filename)
  # i need a line here to put the file object in a widget
  image.show()

当我加载使用Glade构建的GUI时，我有一个图片的特定区域，见下文。 如何将image连接到该区域（picturearea）？在

^{pr2}$

---

更新示例：

class Picture(Gtk.Window):

def __init__(self, *args, **kwargs):
    Gtk.Window.__init__(self)
    self.builder = Gtk.Builder()
    self.builder.add_objects_from_file('layout.glade', ('window1',''))
    #self.builder.connect_signals(Signals())
    thewindow = self.builder.get_object('window1')

    self.picturearea = self.builder.get_object('imagefield')

    filechooserbutton = self.builder.get_object('button2')
    button = self.builder.get_object('button1')
    button.connect("clicked", self.on_load_image_clicked)
    filechooserbutton.connect("clicked", self.on_chooser_clicked)
    self.text_entry = self.builder.get_object('entry1')
    thewindow.set_title("Show an image")
    thewindow.show_all() 

def on_load_image_clicked(self, button):
    #currentpicture = self.picturearea.get_child()
    #self.picturearea.remove(currentpicture)

    image = Gtk.Image()
    path = self.text_entry.get_text()
    try:
        image.set_from_file(path)
        self.picturearea.add(image)
        image.show()
        self.picturearea.show_all()
    except:
        pass

def on_chooser_clicked(self, button):
    dialog = Gtk.FileChooserDialog("Please select an image file", self, Gtk.FileChooserAction.OPEN, ( Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL, Gtk.STOCK_OPEN, Gtk.ResponseType.OK))
    response = dialog.run()
    if response == Gtk.ResponseType.OK:
        print "Response was OK"
        text = dialog.get_filename()
        self.text_entry.set_text(text)

    dialog.destroy()


app = Picture()
app.connect("delete-event", Gtk.main_quit)
Gtk.main()

但是，图像仍然没有显示（使用imagefield for in glade）

Answer 1

我不知道你的picturearea对象是什么，但通常它可以是一个框或一个绘图区域。另外，您似乎正在创建一个图像，但您并没有将该图像添加到任何小部件中。在

以下示例通过使用长方体来工作：

#/usr/bin/env python3

from gi.repository import Gtk

def update_image(widged, data=None):

    # remove the previous image
    for child in image_area.get_children():
        image_area.remove(child)

    ## add a new image
    image = Gtk.Image()
    image.set_from_file('./test.png')
    image_area.add(image)
    image_area.show_all()


window = Gtk.Window()
box = Gtk.VBox()
image_area = Gtk.Box()


button=Gtk.Button(label="click me to set the image")
button.connect('clicked', update_image)


box.add(button)
box.add(image_area)
window.add(box)
window.show_all()
Gtk.main()

（当然，您可以在glade中定义长方体….）