Delphi is similar to often see in {$EXTERNALSYM REG_OPTION_RESERVED} such code, could you tell me what this mean, what is the role?

CodePudding user response:

http://docwiki.embarcadero.com/RADStudio/XE5/en/External_Symbols_%28Delphi%29
As if to compatible BC++ header files exist... My English is not good,,,