Tuesday, January 13, 2015

VBA, Named Arguments

An easier read


Use named arguments for cleaner VBA code.

Most likely, you use positional arguments when working with VBA functions. For instance, to create a message box, you probably use a statement that adheres to the following syntax:

MsgBox(prompt[, buttons] [, title] [, helpfile, context])


When you work the MsgBox function this way, the order of the arguments can't be changed.

Therefore, if you want to skip an optional argument that's between two arguments you're defining, you need to include a blank argument, such as:
MsgBox "Hello World!", , "My Message Box"


Named arguments allow you to create more descriptive code and define arguments in any order you wish. To use named arguments, simply type the argument name, followed by :=, and then the argument value.

For instance, the previous statement can be rewritten as:

MsgBox Title:="My Message Box", _
Prompt:="Hello World!"


(To find out a function's named arguments, select the function in your code and press [F1].)


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