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lib/Mozilla/DOM/MouseEvent.pod  view on Meta::CPAN

This function returns true if the Meta key was held down
when the mouse event occured.

=back

=head2 $x = $event->B<GetScreenX>

=over

This function gets the X coordinate where the mouse was clicked
on the screen, i.e. your desktop. X = 0 is at the left and increases
to the right.

=back

=head2 $y = $event->B<GetScreenY>

=over

This function gets the Y coordinate where the mouse was clicked
on the screen, i.e. your desktop. Y = 0 is at the top and increases
downward.

=back

=head2 $bool = $event->B<GetShiftKey>

=over

This function returns true if the Shift key was held down
when the mouse event occured.