HandlerProc typedef Null safety

Int32 HandlerProc(
  1. Uint32 dwCtrlType

Application-defined callback function used with the SetConsoleCtrlHandler function. A console process uses this function to handle control signals received by the process. When the signal is received, the system creates a new thread in the process to execute the function.


typedef HandlerProc = Int32 Function(Uint32 dwCtrlType);