Delphi Compiler Error
E2139 Illegal message method index
Reason for the Error & Solution
You have specified value for your message index which <= 0.
program Produce;
type
Base = class
procedure Dynamo(VAR x : Integer); message -151;
end;
procedure Base.Dynamo(VAR x : Integer);
begin
end;
begin
end.
The specification of -151 as the message index is illegal in the above example.
program Solve;
type
Base = class
procedure Dynamo(VAR x : Integer); message 151;
end;
procedure Base.Dynamo(VAR x : Integer);
begin
end;
begin
end.
Always make sure that your message index values are >= 1.