在GTK中，标签不会在父级更改时动态调整大小，这是一个已知的错误/问题。这是那些非常烦人的小细节之一，如果可能的话，我想绕过它。
我遵循了16软件上的方法，但是根据免责声明，您不能将其缩小。因此，我尝试了在其中一个评论中提到的技巧（信号回调中的set_size_request调用），但这会导致某种无限循环（您可以试试）。
有没有其他想法？
（您不能仅在调用期间阻止信号，因为正如print语句所示，问题出现在函数离开后。）
以下是代码。如果您运行并尝试将窗口调整为较大或较小，则可以看到我想表达的意思。（如果要查看原始问题，请注释掉“连接到大小分配信号”后面的行，然后运行它，并将窗口调整为更大。）
Glade文件（“example.glade”）:
<?xml version="1.0"?>
<glade-interface>
<!-- interface-requires gtk+ 2.16 -->
<!-- interface-naming-policy project-wide -->
<widget class="GtkWindow" id="window1">
<property name="visible">True</property>
<signal name="destroy" handler="on_destroy"/>
<child>
<widget class="GtkLabel" id="label1">
<property name="visible">True</property>
<property name="label" translatable="yes">In publishing and graphic design, lorem ipsum[p][1][2] is the name given to commonly used placeholder text (filler text) to demonstrate the graphic elements of a document or visual presentation, such as font, typography, and layout. The lorem ipsum text, which is typically a nonsensical list of semi-Latin words, is a hacked version of a Latin text by Cicero, with words/letters omitted and others inserted, but not proper Latin[1][2] (see below: History and discovery). The closest English translation would be "pain itself" (dolorem = pain, grief, misery, suffering; ipsum = itself).</property>
<property name="wrap">True</property>
</widget>
</child>
</widget>
</glade-interface>
Python 代码：
#!/usr/bin/python
import pygtk
import gobject
import gtk.glade
def wrapped_label_hack(gtklabel, allocation):
print "In wrapped_label_hack"
gtklabel.set_size_request(allocation.width, -1)
# If you uncomment this, we get INFINITE LOOPING!
# gtklabel.set_size_request(-1, -1)
print "Leaving wrapped_label_hack"
class ExampleGTK:
def __init__(self, filename):
self.tree = gtk.glade.XML(filename, "window1", "Example")
self.id = "window1"
self.tree.signal_autoconnect(self)
# Connect to the size-allocate signal
self.get_widget("label1").connect("size-allocate", wrapped_label_hack)
def on_destroy(self, widget):
self.close()
def get_widget(self, id):
return self.tree.get_widget(id)
def close(self):
window = self.get_widget(self.id)
if window is not None:
window.destroy()
gtk.main_quit()
if __name__ == "__main__":
window = ExampleGTK("example.glade")
gtk.main()