public ComboBoxHandler(System.Windows.Forms.ComboBox comboBox, DrawMode drawMode = 0)
{
Validate.IsNotNull <System.Windows.Forms.ComboBox>(comboBox, "comboBox");
comboBox.VerifyThreadAccess();
this.comboBox = comboBox;
this.comboBox.DrawMode = drawMode;
this.comboBox.DrawItem += new DrawItemEventHandler(this.OnComboBoxDrawItem);
this.comboBox.HandleCreated += new EventHandler(this.OnComboBoxHandleCreated);
this.comboBox.MeasureItem += new MeasureItemEventHandler(this.OnComboBoxMeasureItem);
this.comboBox.DropDown += new EventHandler(this.OnComboBoxDropDown);
this.comboBox.DropDownClosed += new EventHandler(this.OnComboBoxDropDownClosed);
this.comboBox.GotFocus += new EventHandler(this.OnComboBoxGotFocus);
this.comboBox.SelectedIndexChanged += new EventHandler(this.OnComboBoxSelectedIndexChanged);
}