---
name: "PDF::API2::Basic::TTF::Cvt_"
section: "3pm"
platform: "linux"
package: "libpdf-api2-perl"
version: "0.73-1"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/PDF::API2::Basic::TTF::Cvt_"
---

# PDF::API2::Basic::TTF::Cvt\_(3pm)

Control Value Table in a TrueType font

## NAME

PDF::API2::Basic::TTF::Cvt\_ - Control Value Table in a TrueType font

## DESCRIPTION

This is a minimal class adding nothing beyond a table, but is a repository for cvt type information for those processes brave enough to address hinting.

## INSTANCE VARIABLES

- val

  This is an array of CVT values. Thus access to the CVT is via:

  ```
      $f->{'cvt_'}{'val'}[$num];
  ```

## METHODS

### $t-\>read

Reads the CVT table into both the tables `' dat'` variable and the `"val"` array.

### $t-\>update

Updates the RAM file copy `' dat'` to be the same as the array.

## BUGS

None known

## AUTHOR

Martin Hosken Martin\_Hosken@sil.org. See PDF::API2::Basic::TTF::Font for copyright and licensing.