Converting C++ #Define enum creation to vb.net

Question

For a project i need to a Enum list writen in C++ converterd to en VB.net Enum list. So far everything is OK except for the #define enums that are in the C++ list. Here's what i whant to convert:

typedef enum
{
 #define EnumValue(a,b) a, b=a+255
 EnumValue(PARAM_Start,PARAM_END)
} ID;

As you can see this creates 255 enums values at runtime. How is this done in VB.net?

EDIT / SOLVED 30-09-2016
As mentioned below i made the wrong assumption by thinking it would create 255 enums, instead it creates just two enums however given PARAM_END an extra offset of 255. Meaning: if i have a three enums, the index of these enums are 0,1,3. Now if i want the index of ENUM_3 to begin at 10 i just add ENUM_2 + 8 this way ENUM_3 will start at index 10.

Thanks all for responding so fast and helping me out! :-)

It actually only creates 2, PARAM_Start and PARAM_END, of value 0 and 255 respectively. — Hatted Rooster
– Hatted Rooster, Commented Sep 29, 2016 at 14:16
@AlexB.: There are equivalents to simple #define constants, but not #define macros. — Dave Doknjas
– Dave Doknjas, Commented Sep 29, 2016 at 14:46
Dear Reza Aghaei, thanks for pointing this out. I'm still new here (read allot) i will keep it in mind for my next post :-) — Gforse
– Gforse, Commented Oct 3, 2016 at 12:26

Dave Doknjas · Accepted Answer · 2016-09-29 14:48:46Z

1

The VB equivalent is:

Public Enum ID
 PARAM_Start
 PARAM_END=PARAM_Start+255
End Enum

Not 255 values as you stated, but just 2.

answered Sep 29, 2016 at 14:48

Dave Doknjas

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Brandon · Accepted Answer · 2016-09-29 15:02:03Z

0

As mentioned in comments, I think your C++ will create only 2...

Could you use a T4 Text Template?:

Add TextTemplate.tt to your VB project and fill it with this code:

<#@ template debug="false" hostspecific="true" language="C#" #>
<#@ import namespace="System" #>
<#@ output extension=".vb" #>

Namespace MyNamespace

    Public Enum MyEnum
    <# 
    for (int i = 1; i < 256; i++)
    {
    #>
    Number<#= i #> = <#= i #>
    <# } #>
    End Enum

End Namespace

Build your solution and it'll generate the type for you.

edited Sep 29, 2016 at 15:02

answered Sep 29, 2016 at 14:27

Brandon

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2 Comments

Gforse Over a year ago

@ Gill Bates, i think you're right. Didn't notice it. Still i don't quite understand wat the meaning/goal is? Is it to declare a enum with two subvalues that can be 0 to 255? @ Brandon, Thanks for the snippet, i will read the MSDN doc and try it.

Brandon Over a year ago

The link is only there for reference. You can just copy the code into a .tt file and build your solution.

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