According to a post I found in another forum:
libgtk2.0-dev
I get the following messages:
libgtk2.0-dev:
Depends: libpango1.0-dev but it is not going to be installed
Depends: libcairo2-dev but it is not going to be installed
libpango1.0-dev aldo needs libcairo2-dev
So, I try to install that and get:
libcairo2-dev:
Depends: libcairo2 (=1.10.2-6.1ubuntu3) but 1.10.2-6.1ubuntu3+12.04ac1 is
to be installed
Depends: libcairo-gobject2 (=1.10.2-6.1ubuntu3) but
1.10.2-6.1ubuntu3+12.04ac1 is to be installed
And I'm stuck there, because those dependices is already installed.