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

UNDER_CE macro

Function 

Use this macro when compiling UltraLite applications for Windows CE only.

By default, this macro is defined in all new eMbedded Visual C++ projects.

See also 

Developing UltraLite Applications for Windows CE.