X11::XCB::Screen - represents an x11 screen
Returns true if this screen is the primary screen (that is, at position 0x0).
To install X11::XCB, copy and paste the appropriate command in to your terminal.
cpanm
cpanm X11::XCB
CPAN shell
perl -MCPAN -e shell install X11::XCB
For more information on module installation, please visit the detailed CPAN module installation guide.