GTK is not threadsafe. If opencv shows a gtk mainwindow in cv.ShowImage, and that occurs in a different thread to the one running gtk_main, then unpredictable crashes and odd behaviour will result.
Please check the pygtk FAQ for how to use threading and pygtk. I suggest displaying the image yourself in by getting the data from the IPL image and copying it into a GtkImage. Or be much more careful with which operations you do in which thread (i.e. cv.ShowImage, cv.WaitKey) John 2012/2/21 Joseph S. Alcântara <josephser...@gmail.com>: > Hi, Thank you for response to me. > > See, can I sand you my program to you see what I am making? I've used > Thread, but seems like is not working like I want. > > You must run from main.py > > Joseph Soares Alcântara > Engenharia da Computação - 8º semestre > Universidade Federal do Ceará - UFC > Sobral - Ceará > > +--------------------------------------------------------------------------+ > .| - °v°...A liberdade não pode ser comprada e sim | > .| -/(_)\..conquistada. Conquiste a sua também use | > .| - ^^ G N U / L I N U X | > +--------------------------------------------------------------------------+ > > > > 2012/2/19 Hart's Antler <bhart...@yahoo.com> >> >> Hi Joseph, >> I got GTK and OpenCV working together using threads. This example works >> with CPython2, CPython3 and PyPy, see my blog post. >> http://pyppet.blogspot.com/2011/12/rpythonic-044.html >> >> -brett- >> >> ________________________________ >> From: Joseph S. Alcântara <josephser...@gmail.com> >> To: pygtk@daa.com.au >> Sent: Sunday, February 19, 2012 9:46 AM >> Subject: [pygtk] PyGTK + OpenCV >> >> hi, I'm writing a application that uses pygtk and opencv. and I had a >> problem. When I run the program it shows a gui. So far so good. But, when I >> click in a menuitem, it should call a functino that runs the famous routine >> to show a video from webcam. But in this moment, the app freezes. I have >> tried to use thread, but opencv gui runs just after I call gtk.main_quit(). >> What could solve my problem? Thanks. >> >> Estou escrevendo um programa em python, usando pygtk e opencv. Quando rodo >> o programa, aparece uma janela e até aí, beleza. Mas quando eu clico em um >> menuitem, ele deve chamar uma função que roda a famosa rotina que exibe um >> vídeo a partir da webcam. No entanto, neste momento, o programa trava. >> Então, eu tentei usar Thread, mas a parte do opencv só roda depois que eu >> fecho a janela, chamando gtk.main_quit(). O que poderia ser? Obrigado desde >> já. >> >> Joseph Soares Alcântara >> Engenharia da Computação - 8º semestre >> Universidade Federal do Ceará - UFC >> Sobral - Ceará >> >> >> +--------------------------------------------------------------------------+ >> .| - °v°...A liberdade não pode ser comprada e sim | >> .| -/(_)\..conquistada. Conquiste a sua também use | >> .| - ^^ G N U / L I N U X | >> >> +--------------------------------------------------------------------------+ >> >> >> _______________________________________________ >> pygtk mailing list pygtk@daa.com.au >> http://www.daa.com.au/mailman/listinfo/pygtk >> Read the PyGTK FAQ: http://faq.pygtk.org/ >> > > > _______________________________________________ > pygtk mailing list pygtk@daa.com.au > http://www.daa.com.au/mailman/listinfo/pygtk > Read the PyGTK FAQ: http://faq.pygtk.org/ _______________________________________________ pygtk mailing list pygtk@daa.com.au http://www.daa.com.au/mailman/listinfo/pygtk Read the PyGTK FAQ: http://faq.pygtk.org/
