code: func CreateProgressBar(parent Control, width, height int, scale int) *ProgressBar {
  	b := new(ProgressBar)
  	b.BaseControl = NewBaseControl()
  
  	if height == AutoSize {
  		height = 1
  	}
  	if width == AutoSize {
  		width = 10
  	}
  
  	b.SetSize(width, height)
  	b.SetConstraints(width, height)
  	b.SetTabStop(false)
  	b.SetScale(scale)
  	b.min = 0
  	b.max = 10
  	b.direction = Horizontal
  	b.parent = parent
  	b.align = AlignCenter
  
  	if parent != nil {
  		parent.AddChild(b)
  	}
  
  	return b
  }
docs: /*
  NewProgressBar creates a new ProgressBar.
  parent - is container that keeps the control.
  width and heigth - are minimal size of the control.
  scale - the way of scaling the control when the parent is resized. Use DoNotScale constant if the
  control should keep its original size.
  */