SidebarLibrary.Menus.MenuControl.OnMouseDown C# (CSharp) Method

		protected override void OnMouseDown(MouseEventArgs e)
		{
			Point pos = new Point(e.X, e.Y);

			for(int i=0; i<_drawCommands.Count; i++)
			{
				DrawCommand dc = _drawCommands[i] as DrawCommand;

				// Find the DrawCommand this is over
				if (dc.DrawRect.Contains(pos))
				{
					// Is an item already selected?
					if (_selected)
					{
						// Is it this item that is already selected?
						if (_trackItem == i)
						{
							// Is a popupMenu showing
							if (_popupMenu != null)
							{
								// Dismiss the submenu
								_popupMenu.Dismiss();

								// No reference needed
								_popupMenu = null;
							}
						}
					}
					else
					{
						// Select the tracked item
						_selected = true;
						_drawUpwards = false;

						GrabTheFocus();

						// Is there a change in tracking?
						if (_trackItem != i)
						{
							// Modify the display of the two items
							_trackItem = SwitchTrackingItem(_trackItem, i);
						}
						else
						{
							// Update display to show as selected
							DrawCommand(_trackItem, true);
						}

						// Is there a submenu to show?
						if (dc.Chevron || (dc.MenuCommand.MenuCommands.Count > 0))
							WindowsAPI.PostMessage(this.Handle, WM_OPERATEMENU, 1, 0);
					}

					break;
				}
			}

			base.OnMouseDown(e);
		}