How to Use Enum Constraints

Unity Engine
1

I’m trying to set the constraint variable of a GridLayoutGroup and I’m not understanding how to do it.

        public enum Constraint { Flexible = 0, FixedColumnCount = 1, FixedRowCount = 2 }
   

GridLayoutGroup gridParent = Canvas_Generic_ControlObj.transform.FindChild("GridParent").GetComponent<GridLayoutGroup>();
      
Constraint constraint = Constraint.FixedRowCount;
gridParent.constraint = constraint;

The above code returns error:

Assets/Scripts/FB_EditorUtils.cs(50,27): error CS0266: Cannot implicitly convert type FB_EditorUtils.Constraint' to UnityEngine.UI.GridLayoutGroup.Constraint’. An explicit conversion exists (are you missing a cast?)

Any ideas what I’m doing wrong?

I’m failing to see why I can’t just say gridParentConstraint = 2

2

why are you creating your own enum? shouldnt it be using this?

gridParent.constraint = GridlayoutGroup.Constraint.Flexible;//or whatever your target setting is
2 Likes
3

You don’t define your own enum, but use the one already in Unity. You don’t use magic numbers instead of enums because magic numbers make code not very readable.

–Eric

3 Likes
4

Thanks, I was not getting it at all!