Re: Xlib: unexpected async reply (sequence ......)

["MERT TUGCU" <merttugcu hotmail com>]

I read both Gtk+ and Gtkmm FAQ before. I saw that you have to surround your 
calls with gdk_threads_enter/leave() pair if you want to call Gtk+/Gtkmm 
from a separate thread. I tried this and also I've added 
Glib::threads_init() at the beginning of  my main.cpp. I am still getting 
Xlib: unexpected async reply error. When I resize my window or capture an 
image, I get this error. I used scale_simple() function to scale both my 
video and my captured images. What would I be doing wrong here? I really 
need to find a solution for this problem. Any help is greatly appreciated.
Thank you for your time again.


> From: Paul Davis <paul linuxaudiosystems com>
> Reply-To: paul linuxaudiosystems com
> To: MERT TUGCU <merttugcu hotmail com>
> CC: gtkmm-list gnome org
> Subject: Re: Xlib: unexpected async reply (sequence ......)
> Date: Tue, 17 Jan 2006 19:10:16 -0500
>
> On Tue, 2006-01-17 at 16:49 -0600, MERT TUGCU wrote:
> > Dear all,
> >
> > I have been trying to solve this problem for a long time with no 
> success. I
> > have a video application which shows the video stream, captures an image 
> and
> > make some processing on the captured image. Therefore, I have divided 
> the
> > screen into 4 and show video, images and so on in each part of the 
> screen. I
> > search the internet and this problem shows up if your application is
> > multi-threaded. Since my application has to be multi-threaded (because 
> of
> > the video stream), I am frequently getting this error and the 
> application
> > crashes.
> > Now, as far as I've seen, there are two things that could be done. One, 
> is
> > using the gdk_threads_enter / leave() pair. Do I need to use this pair
> > whenever I need to update the GUI? Also I saw in one web page that I 
> also
> > need to use XInitThreads() function and this might solve the problem 
> which
> > did not.
> > Can someone please give a solution to get rid of this problem? I also 
> looked
> > to the GTK+ FAQ. I've seen that a lot of people are struggling with this
> > problem.
>
> The FAQ has suggested answers to your problem. XInitThreads is not
> relevant to your problem.