On Mon, 2003-08-04 at 18:29, Maik Hertha wrote:
> I have an application that uses threads. As the call to gtk.threads_init() is
> wrapped with try: except:, there where no problems. As win32 for py-gtk is build
> with threadings on by default, the application start seems to hang on
> gtk.threads_init().
>
> - --- code:
> try:
> gtk.threads_init()
> except RuntimeError:
> print 'keine threads!'
> HAS_GTK_THREADS = False
> app = AppWindow()
> app.run()
> - --- code /
>
> If I comment out the gtk.threads_init call the application starts as excepted.
> Otherwise the application is build, but the gtk.mainloop seems not to work properly.
> Because I have no compiler environment installed, I can not provide stack-traces or
> so.
> Environment:
> WinXP SP1, Python 2.3, pygtk-1.99.17-2.3, gtk-runtime 2.2.1.2 (dropline).
Make sure that you use threads_enter/leave(). Here is an example of a
very simple multithreaded application that works well on my machine
(same config as yours).
Cedric
-------------------------
#!/usr/bin/env python
""" Simple pyGTK multithreading example"""
# Adapted from a post by Alif Wahid on the pyGTK mailinglist.
# Cedric Gustin, August 2003
import sys
import time
import gtk
from threading import Thread
threadcount=0
class Test (Thread):
def __init__ (self,button, count=0):
Thread.__init__(self)
self.count = count
self.button=button
def run (self):
for i in range(0,10):
time.sleep(1)
# Acquire and release the lock each time.
gtk.threads_enter()
self.button.set_label("Thread %002d - %d" % (self.count,i))
gtk.threads_leave()
gtk.threads_enter()
self.button.set_label(" Start Thread ")
gtk.threads_leave()
def start_new_thread (button, data=None):
global threadcount
threadcount += 1
a = Test(button,threadcount)
a.start()
def hello(*args):
""" Callback function that is attached to the button """
print "Hello World"
window.destroy()
def destroy(*args):
""" Callback function that is activated when the program is destoyed
"""
window.hide()
gtk.main_quit()
# Initialize threads
gtk.threads_init()
window = gtk.Window(gtk.WINDOW_TOPLEVEL)
window.connect("destroy", destroy)
window.set_border_width(10)
button = gtk.Button(" Start Thread ")
button.connect("clicked", start_new_thread,button)
window.add(button)
button.show()
window.show_all()
gtk.threads_enter()
gtk.main()
gtk.threads_leave()
-------------------------
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