[Coin-lpsolver] Correct way to disable messages in Coin

[Jean-Sebastien Roy]

John J Forrest wrote:
> One way is to override the message handler with one of you own - see 
> COIN/Clp/Test/MyMessageHandler.cpp/.hpp.
> 
> However looking at the code a much simpler way would be to allow you to 
> set the level to -1.  Try changing line 253 of CoinMessageHandler.cpp to 
> if (value >=-1) and then set the level to -1.  If that does what you want 
> then I will put the change in cvs.

Thanks for your suggestion !

I may have made an error, but I changed the line, set the loglevel to 
-1, and many more messages appeared like:
Clp0105I Pivot row 0
Clp0101I dirOut 1, dirIn 1, theta 1, out 2.1, dj 1, alpha -1
I suppose it may be debug messages.
(from line 406: if ((detail&logLevel_)==0))
Moreover, the previous messages did not disappear.

Regards,

js