EStyler

eStyler API is user interface extensions API to support windows keys, title bar enhancements, push button enhancements, dialogs font control and shutdown sequence control (including replacement of dialogs).

Exists two flavours of API. Version 1.0, included in eCS 1.1 and eCS 1.2, and Version 1.1, which will be included in eCS 2.0.

Anyway, as developer of eSchemes (Prokushev here) I propose not reuse this API because:
 * Version 1.0 API and Version 1.1 API not same things and works in different logic.
 * This is internal API, not for wide usage
 * Most probably, eSchemes 2.0 will replace eStyler API by another one.