[Gambas-user] unsigned int datatype for external function

[Benoît Minisini]

Le 10/06/2018 à 17:38, Demosthenes Koptsis a écrit :
> hello,
> 
> i want to use an unsigned int in external function, which gambas 
> datatype should i use?
> 
> Integer or Long?
> 
> The range of values is 0 to 4,294,967,295
> 
> 
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> .

You must use the Integer datatype.

Then if you want to get the real unsigned integer value, as there is no 
UnsignedInteger datatype in Gambas (sorry for that), you have to do this 
trick:

Public Sub UnsignedIntegerToLong(X As Integer) As Long

   Return CLong(X) And (Lsl(1, 32) - 1)

End

Public Sub LongToUnsignedIntegerToLong(X As Integer) As Integer

   Return X

End

-- 
Benoît Minisini