Why default values for function parameters do not work when function is defined in a library

Lin Xie 2011.10.27 14:24

abc.mq4:

#import "abc.ex4"
    int CheckupTradability(bool silientCheck=false);
    void DisplayAccountInfo(); 
#import

abc.mq4:

void DisplayAccountInfo()
{
    
}

//+------------------------------------------------------------------+
int CheckupTradability(bool silientCheck)
{
    return(0);
}

Used in test.mq4:

include <abc.mqh>     // My library

//+------------------------------------------------------------------+
//| script program start function                                    |
//+------------------------------------------------------------------+
int start()
  {
//----
    if (CheckupTradability()==0)
        DisplayAccountInfo();
//----
   return(0);
  }

I got an error when compiling test.mq4: ')' - wrong parameters count

I also got 3 warnings when compiliing abc.mq4 as follows. Shall I add a start() as a faked one?

Start function not found and cannot be run.
Function "DisplayAccountInfo" is not referenced and will be removed from exp-file
Function "CheckupTradability" is not referenced and will be removed from exp-file

Ubzen 2011.10.27 14:34 #1

Here. MQL4-library functions imported within other modules cannot have parameters initialized by default values.

Lin Xie 2011.10.27 14:44 #2

ubzen:
Here. MQL4-library functions imported within other modules cannot have parameters initialized by default values.

Thanks, ubzen. Is this written in the documentation?

Ubzen 2011.10.27 15:02 #3

MetaQuotes Software Corp considers the Online Documentation as The Documentation. If you use the MQL4 Navigator, it'll bring you to the same link I provided. What you find around here depends on your Ability or Willingness to search Google.

Spammers, private message spam, AUDCAD & AUDNZD data MT4-Read a CSV file

Lin Xie 2011.10.27 15:10 #4

ubzen:
MetaQuotes Software Corp considers the Online Documentation as The Documentation. If you use the MQL4 Navigator, it'll bring you to the same link I provided. What you find around here depends on your Ability or Willingness to search Google.

Sorry, I didn't realize "Here" in your first reply is a hyperlink. Yes, it is clearly stated. Thanks.

[Deleted] 2011.10.30 04:53 #5

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