libmng

After making minor modification in gtk-mng-view it works fine on
gtk-directfb backgroud.

Sven Neumann provided the solution.
This is a bug in gtk-mng-view.c. It tries to
draw outside the expose handler. Simply replace the function
mng_refresh_callback() in gtk-mng-view.c with the following code and it
will work just fine:

static mng_bool
mng_refresh_callback (mng_handle mng_h,
mng_uint32 x,
mng_uint32 y,
mng_uint32 width,
mng_uint32 height)
{
gtk_widget_queue_draw_area (GTK_WIDGET (mng_get_userdata (mng_h)),
x, y, width, height);

return MNG_TRUE;
}

so someone from maintenance team can verify it and change it.