Re: transparent layer over image

[Dmitriy Kuvshinov <dmitriyk genphys phys msu ru>]

hello!

> if you already have XS code in your module, then it will be much 
> easier for you to draw on the image in C.

After insert #include "gtk2-perl.h" in my *.xs, system cannot find path 
for header files like
gperl.h or gtk/gtk.h (bit i see it *.h files in 
/usr/lib/perl5/site_perl/5.8.1/i386-linux-thread-multi/Gtk2)
... :(

> you can pass the GdkPixbuf to your xsub, draw on it in C (where there 
> is no need to copy data, unpack/pack pixels, and all that mess), and 
> then display the pixbuf from perl.

it's nice way, but i has some error... :(

> to do this you'll need to #include <gtk2perl.h> in your XS file, so 
> that your code will know how to extract the GdkPixbuf* from the 
> Gtk2::Gdk::Pixbuf reference.  you can use ExtUtils::Depends to find 
> the necessary CFLAGS and typemaps.

...

dmitriy