create a subroutine

Getting Started
1

Hi,

I have a question about creating a subroutine, which means it doesn’t have any return value. Like a subroutin just write certain data into serial port or clear serval gloable properties to their inital value, etc.

What’s the best way to do that? I use methods a lot, but that require a return value. in the VB, I can use something like,

Sub doSomething(ByVal i as Integer, ByRef j as Single) ' blocks of code End sub

Then, call it in an button.click event or anywhere I want,

Dim num as single doSomething (5, num)

What’s the similar methods in Xojo?

Thanks!

2

In Xojo Methods don’t return a value, and Functions return a value.
Your code block would work just fine.

Have you read the manual yet? Lots of useful stuff in there.

3

Just leave the return value blank in the inspector. In fact, you can select an item (window/class/module) in the Xojo navigator (make sure it is blue not gray) and paste your sub dosomething etc… and a new method will be inserted.

4

Leave the Return type blank.

See Methods in the User Guide.

5

Bo,

FWIW in the spirit of examples if you do happen to create a function (method that returns a value) and say you wanted to call if bypassing the return value you can do:

Call myFunction()

instead of:

Dim returnValue as String = myFunction()