No experience with enum. Quick question.

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I was looking for a way to create a combo box for the input variables.  I came across the following example:


enum __in{ 
   _p1, // value 1
   _p2, // value 2
   _p3, // value 3
   _p4  // value 4 
};
extern __in check = _p1


It works beautifully and I have adapted it for my needs.  My question is...  What is the value returned from check?

So, if I wanted to do something like

if(check == _p3)
{
blah blah

}

Is that correct?  So, if someone selected "value 3" from the dropdown, then the above would result in TRUE?

 
jthornton:

I was looking for a way to create a combo box for the input variables.  I came across the following example:



It works beautifully and I have adapted it for my needs.  My question is...  What is the value returned from check?

So, if I wanted to do something like

Is that correct?  So, if someone selected "value 3" from the dropdown, then the above would result in TRUE?


if(check == 0)//_p1
{
blah blah
}
------------------------
if(check == 1)//_p2
{
blah blah
}
 
jthornton: It works beautifully and I have adapted it for my needs.  My question is...  What is the value returned from check?

So, if I wanted to do something like

if(check == _p3)
{
blah blah

}

Is that correct?  So, if someone selected "value 3" from the dropdown, then the above would result in TRUE?

Think of enumerations as #define A 0, #define B 1, etc. with type checking. The second argument of iMA is a ENUM_TIMEFRAMES That means you can't pass one (1) or OP_SELL (also 1) but must use PERIOD_M1 (value 1.)

They can not select value 3. The pull down list will be _p1, _p2, etc. Change the enumerations to something readable.

Your if is correct. Do not start putting int values in the code as Nikolaos Pantzos suggests. That just makes self-documentating code non-docmentating.

 
whroeder1:

Think of enumerations as #define A 0, #define B 1, etc. with type checking. The second argument of iMA is a ENUM_TIMEFRAMES That means you can't pass one (1) or OP_SELL (also 1) but must use PERIOD_M1 (value 1.)

They can not select value 3. The pull down list will be _p1, _p2, etc. Change the enumerations to something readable.

Your if is correct. Do not start putting int values in the code as Nikolaos Pantzos suggests. That just makes self-documentating code non-docmentating.

When I do it, the dropdown list is actually showing the value beside the //.

So:

_p1, // value a

The dropdown list is actually showing "value a", not "_p1".

It seems to be working as I expected.

Thanks for the help.  This has been quite useful for creating my own values.

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