export extern (C) void Fun Error

["拖狗散步"]

On Friday, 27 April 2012 at 01:21:56 UTC, Trass3r wrote:
>> export c callback fun:
>>
>> alias void function(int id) ConnectedCallBack;
>> alias void function(int id, void* data, int len) ReadCallBack;
>
> add extern(C) to be safe


Thank, Trass3r! Finally correct, why have to export these two?