使用PyGtk时未从其他线程更新GUI [英] GUI not updated from another thread when using PyGtk

问题描述

我正在使用PyGTK来构建GUI应用程序.我想从另一个线程更新textview窗口小部件，但是每次我尝试更新时该窗口小部件都不会更新.我应该怎么做才能获得可靠的GUI更新?

I am using PyGTK to build a GUI application. I want to update the textview widget from another thread but the widget is not getting updated everytime i try an update. What should i do to get a reliable GUI updating?

推荐答案

GTK +并非线程安全的，因此您不应简单地从其他线程调用GUI更新方法. glib.idle_add (或gobject.idle_add在较旧的PyGTK版本中)可以用于此目的.

GTK+ is not thread-safe, so you should not simply call GUI update methods from other threads. glib.idle_add (or gobject.idle_add in older PyGTK versions) can be used for this purpose.

代替写作:

label.set_text("foo")

您会写:

glib.idle_add(label.set_text, "foo")

这会使函数调用在GTK +中排队.

which causes the function call to be queued in GTK+.

如果您需要运行多个语句，通常将它们包装到一个函数中会更容易:

If you need to run multiple statements, it's often easier to wrap them in a function:

def idle():
    label1.set_text("foo")
    label2.set_text("bar")
glib.idle_add(idle)

确保传递给idle_add的函数不返回True；否则它将再次排队.

Make sure that the function passed to idle_add does not return True; otherwise it will be queued again.

正如Daniel指出的那样，您需要先在程序中的任何位置调用gtk.gdk.threads_init().

As Daniel pointed out, you need to call gtk.gdk.threads_init() anywhere in your program first.

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