[maemo-developers] [maemo-developers] Re: gtkmm and scratchbox: Gtk::DrawingArea problem

[From: Jarkko Palviainen]

On Sat, 09 Sep 2006 22:10:58 +0300, Murray Cumming <murrayc at murrayc.com>  
wrote:

> On Sat, 2006-09-02 at 13:14 +0300, Jarkko Palviainen wrote:
>> Hi,
>> I'm trying to build simple drawing app for Nokia 770 IT2006 but here's  
>> the
>> problem:
>> When compiling and running some example, like this
>> http://www.gtkmm.org/gtkmm2/docs/tutorial/html/ch14s03.html#id2524813
>> it goes well but just doesn't draw anything on Xephyr emulator, just  
>> blank
>> window. Compiling and running in normal Debian Sarge is fine, I can see
>> those lines drawn. The problem seems to be related to on_expose_event()
>> which is not called as I tested by debug printing in it. I can't use  
>> cairo
>> as I have to use glimm 2.8.9.
>
> Yes, the version of gtkmm that is in the maemo repository uses some
> special optimizations. The most obvious change is that there are no
> default signal handlers, so you must connect a signal handler instead of
> just overriding the default one.
>

Yep it seems to be something like that. I solved the problem using  
different libraries pointed out in  
http://home.comcast.net/~3rdshift/articles/Nokia770/Maemo.html (direct  
link:  
http://home.comcast.net/~3rdshift/articles/Nokia770/Nokia770-IT2006/deb/deb-index.html).  
Now they work the usual way. Actually I could not install the repository  
packages with depedencies at the first place, propably because of the  
naming of packages and versions.

>> I can load and display and png image and run hello world gtkmm apps in
>> sbox, so it seems to be working, but I'm really stuck with the drawing  
>> and
>> I need to draw dots or circles on the image (a map) I'm showing. Any
>> suggestions? I'm new to gtk+ and gtkmm so if any questions please ask.  
>> I'm
>> also trying maemo.org lists..
>