ComponentFactory.Krypton.Ribbon.GroupButtonController.MouseDown C# (CSharp) Method

        public virtual bool MouseDown(Control c, Point pt, MouseButtons button)
        {
            // Only interested in left mouse pressing down
            if (button == MouseButtons.Left)
            {
                // Can only click if enabled
                if (ClickOnDown(pt) && _target.Enabled)
                {
                    _captured = true;

                    // If already in fixed mode, then ignore mouse down
                    if (!_fixedPressed)
                    {
                        // Mouse is being pressed
                        UpdateTargetState(pt);

                        // Show the button as pressed, until told otherwise
                        _fixedPressed = true;

                        // Raise the appropriate event
                        switch (ButtonType)
                        {
                            case GroupButtonType.Split:
                                // Track if the mouse is inside the split area
                                if (ButtonType == GroupButtonType.Split)
                                    _mouseInSplit = _splitRectangle.Contains(pt);

                                if (_splitRectangle.Contains(pt))
                                    OnDropDown(new MouseEventArgs(MouseButtons.Left, 1, pt.X, pt.Y, 0));
                                else
                                    OnClick(new MouseEventArgs(MouseButtons.Left, 1, pt.X, pt.Y, 0));
                                break;
                            case GroupButtonType.DropDown:
                                OnDropDown(new MouseEventArgs(MouseButtons.Left, 1, pt.X, pt.Y, 0));
                                break;
                            case GroupButtonType.Push:
                            case GroupButtonType.Check:
                            default:
                                OnClick(new MouseEventArgs(MouseButtons.Left, 1, pt.X, pt.Y, 0));
                                break;
                        }
                    }
                }
                else
                {
                   // Capturing mouse input
                    _captured = true;

                    // Update the visual state
                    UpdateTargetState(pt);
                }
            }

            // Remember the user has pressed the right mouse button down
            if (button == MouseButtons.Right)
                _rightButtonDown = true;

            return _captured;
        }