An array of pitches, one for each plane.
Pitch is the length of a row in bytes.
The overlay should be locked before these pointers are used. All the fields are read only, except for pixels which should be locked before use. All text is treated as preformatted text, it should appear identical to how you enter it. This is not a message board system or a guestbook. This system is here to allow you to add details or helpful advice that you feel may be missing from a certain part of the documentation.