Proper syntax for 'me.Parent.Left'

Getting Started
1

I have Rectangle1 on Window1. I want to be able to MouseDown on the Rectangle and Move it with MouseDrag. The x,y coordinates presented with Rectangle1.MouseDown are relative to the Rectangle. I want it relative to Window1 so I can dynamically reposition the rectangle with the drag.

System.MouseX - Window1.Left works and accomplishes this. But I want to abstract Window1 so i can use this as a custom control independent of the name of the parent window. Me.Parent.Left crashes.

What is the proper syntax to address the parent window’s left, top, width and height?

Thank you,

2

Use Self instead of Me.Parent to refer to the parent window from within a control.

Me.Parent refers to the parent control not the parent window; if Me is not contained within another control then Me.Parent is Nil. Accessing a Nil object raises a NilObjectException.

3

Thanks. That’s the solution.