[GRASS-dev] error in addon

I am developing an addon for grass.
in the program there will be a tree control in which all the maps are listed; on double clicking the map will be displayed in a window.
But now map is rendered as .png file in application directory instead of displaying in the mapwindow.

anyone please help me

waiting for ur reply

my addon is in
http://trac.osgeo.org/grass/browser/grass-addons/gui/wxpython/data_catalog


Regards,
Mohammed Rashad K.M
http://keralainfo.web4all.in/
+919496620801