internal ListBoxCreator(ListBox listBox, ControlPanelChildrenCreator parentCreator)
 {
     this.listbox       = listBox;
     this.parentCreator = parentCreator;
 }
 internal TextBoxCreator(TextBox textBox, ControlPanelChildrenCreator parentCreator)
 {
     this.textBox       = textBox;
     this.parentCreator = parentCreator;
 }