System.Windows.Forms.ToolBarButton.UpdateButton C# (CSharp) Method

        private void UpdateButton(bool recreate, bool updateText, bool updatePushedState) {
            // It looks like ToolBarButtons with a DropDownButton tend to
            // lose the DropDownButton very easily - so we need to recreate
            // the button each time it changes just to be sure.
            //                                           
            if (style == ToolBarButtonStyle.DropDownButton && parent != null && parent.DropDownArrows) {
                recreate = true;
            }

            // we just need to get the Pushed state : this asks the Button its states and sets 
            // the private member "pushed" to right value..

            // this member is used in "InternalSetButton" which calls GetTBBUTTONINFO(bool updateText)
            // the GetButtonInfo method uses the "pushed" variable..

            //rather than setting it ourselves .... we asks the button to set it for us..
            if (updatePushedState && parent != null && parent.IsHandleCreated) {
                GetPushedState();
            }
            if (parent != null) {
                int index = FindButtonIndex();
                if (index != -1)
                    parent.InternalSetButton(index, this, recreate, updateText);
            }
        }    
    }