ListBox background color

I can’t set the backcolor of the listbox in my dialog.
MyDlg.GetControl(“MyListbox”).GetModel.BackgroundColor = RGB(255,79,0) doesn’t work, after leaving the listbox backcolor remains white. What am I doing wrong?

Install and use one of the excellent object inspection tools: XrayTool, MRI. Then you will able to list the existing properties, methods and interfaces of the programming objects in your code.