INTELLIGENT WORK FORUMS
FOR COMPUTER PROFESSIONALS

Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

VBA Visual Basic for Applications (Microsoft) FAQ

Office / VBA General

IsNothing Function since I always forget it is not part of VBA IsSomething functions by SBendBuckeye
Posted: 5 Jul 03

VBA provides a long list of IsSomething functions for use in testing various properties or settings in your code. I
periodically forget that I have to test for VariableName Is Nothing since VBA does not provide an IsNothing function for my use. This usually happens at the end of a long day and can be quite frustrating so I wrote my own as below:

'**********************************************************
'* Function: Returns true if argument evaluates to nothing
'* 1. IsNothing(Nothing) -> True
'* 2. IsNothing(NonObjectVariableOrLiteral) -> False
'* 3. IsNothing(ObjectVariable) -> True if instantiated,
'*                                 otherwise False
'**********************************************************
Public Function IsNothing(pvarToTest As Variant) As Boolean
    On Error Resume Next
    IsNothing = (pvarToTest Is Nothing)
    Err.Clear
    On Error GoTo 0
End Function 'IsNothing

Enjoy!

Back to VBA Visual Basic for Applications (Microsoft) FAQ Index
Back to VBA Visual Basic for Applications (Microsoft) Forum

My Archive

Resources

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close