https://docwiki.embarcadero.com/RADStudio/Sydney/en/Delphi_Compatibility_Macros
OPENARRAY
#define OPENARRAY(type, values) \
OpenArray<type>values, OpenArrayCount<type>values.GetHigh()
The OPENARRAY macro can be used as in the following example:
myProc(OPENARRAY(TVarRec,(1, 2, 3, 4, 5)))
//in which case the expanded code looks like:
myProc(OpenArray<TVarRec>(1, 2, 3, 4, 5), OpenArrayCount<TVarRec>(1, 2, 3, 4, 5).GetHigh())
//which corresponds to what Delphi methods expect.
The same technique is used for the rest of the macros.
https://docwiki.embarcadero.com/RADStudio/Sydney/en/Predefined_Macros
https://docs.devart.com/unidac/work_macros.htm
