GetAnchor() ?

Edda · 04/14/14, 11:23 AM

Hello,

I am facing a little problem here : I am new to Lua and don't konw the difference between the '.' operator and ':' operators.

I know the dot operator is used to get/use parameters and methods of said object but why and when do we have to use the ':' operator ?

My second question is : I am trying to save an UI element position is user's saved variables but I haven't had luck with 'GetAnchor()' yet. I did try

Code:

MyElement:GetAnchor()

returns boolean (true) only - I guess the operator tests if the method exists ??? - but then why can we use MyElement:SetAnchor(args) ?

Well then I tried

Code:

MyElement.GetAnchor()

But I get API error 'userdata expected, got no value'.

Doc says you have to pass the AnchorIndex to the function so I finally tried

Code:

MXPVUI.GetAnchor(MXPVUI.anchorIndex)

No luck

Where do I put the AnchorIndex tag in the XML file ? Am I doing the thing right ???

Explanation very welcome if you experienced doing the same thing