UltraLite Database User's Guide
  Static Development Model Reference
    Macros and compiler directives for UltraLite C/C++ applications

UL_AS_SYNCHRONIZE macro

Function 

Provides the name of the callback message used to indicate an ActiveSync synchronization.

Applies to 

Windows CE applications using ActiveSync only.

See also 

Adding ActiveSync synchronization to your application

Adding ActiveSync synchronization to your application