CODEWITHSUNDEEP
vb6parameters
Joe M
Joe M

Reputation: 3440

In VB6, is it possible to call a function with an operator in the parameter?

I'm having a really hard time finding an answer for this, with such generic terminology, and it's possible my question is still difficult to parse. I have some code with a variable representing the amount of free disk space remaining as a percentage. I want to call it into a function, where I use the reverse amount in a message to the user, i.e. the amount of used space. Can I do a little math in the function call?

Public Sub MyApp()
    Dim nFreeSpace As Integer
    nFreeSpace = GetFreeSpace
    DisplayUsedSpace 100 - nFreeSpace 'Is this valid?
End Sub
Private Function DisplayUsedSpace(ByVal nUsedSpace As Integer) As Boolean
    MsgBox("You have used " & nUsedSpace & "% of your disk drive space.")
End Function

Upvotes: 2

Views: 145

Answers (2)

DJ.
DJ.

Reputation: 16257

Of course you can - VB will calc the expression first.

You could also reverse it before the call 

Public Sub MyApp()
    Dim nUsedSpace As Integer
    nUsedSpace = 100 - GetFreeSpace
    DisplayUsedSpace nUsedSpace
End Sub

If you want it really compact:

Public Sub MyApp()
    Call DisplayUsedSpace(100 - GetFreeSpace)
End Sub

Upvotes: 3

UnhandledExcepSean
UnhandledExcepSean

Reputation: 12804

Yes, that is valid. Although, I probably would write it as this

Call DisplayUsedSpace(100 - nFreeSpace)

But, your code would work fine too.

Upvotes: 5

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