[Lazarus] Need testers (gtk2)

[Juha Manninen]

On Sunday 24 October 2010 15:24:04 zeljko wrote:
> Hi,
> I've commited an important patch today (r 27829) , about gtk2 main loop
> iterations.
> Now it uses g_main_context instead of g_main which is deprecated from
> gtk2-2.2.
> This patch improves main loop, but also now PostMessage() works fine for
> messages from another threads.
> 
> *** Gtk2 Laz/LCL must be build with -dUSE_GTK_MAIN_CONTEXT_ITERATION ***
> to get this new code work.

In my short tests it works well. I didn't notice difference for older versions.
I will try PostMessage later.

I just happened to debug a GTK2 program. It is the thtmlport package from CCR. 
It looks like a useful package but it crashes with GTK2. This bug seems to be 
extremely difficult to find. It shows this:

(lazarus:2791): Gdk-CRITICAL **: gdk_window_get_state: assertion 
`GDK_IS_WINDOW (window)' failed
[DBGTGT] Gdk-ERROR **: The program 'framedem' received an X Window System 
error.
[DBGTGT] This probably reflects a bug in the program.
[DBGTGT] The error was 'BadMatch (invalid parameter attributes)'.
[DBGTGT]   (Details: serial 2256 error_code 8 request_code 62 minor_code 0)
[DBGTGT]   (Note to programmers: normally, X errors are reported 
asynchronously;
[DBGTGT]    that is, you will receive the error a while after causing it.
[DBGTGT]    To debug your program, run it with the --sync command line
[DBGTGT]    option to change this behavior. You can then get a meaningful
[DBGTGT]    backtrace from your debugger if you break on the gdk_x_error() 
function.)
[DBGTGT] aborting...


Question: how can I give  --sync parameter for the program when I run it under 
gdb? I tried:

 $ gdb 'framedem --sync'
which says:
 framedem --sync: No such file or directory.

and:

 $ gdb framedem --sync
which says:
 gdb: unrecognized option '--sync'
 Use `gdb --help' for a complete list of options.

I can give the parameter in Lazarus "Run Parameters..." but then the whole 
Lazarus freezes. It doesn't take mouse clicks and must be killed.

Juha