internal MenuCommand TrackPopup(Point screenPos, Point aboveScreenPos,
Direction direction,
MenuCommandCollection menuCollection,
int borderGap,
bool selectFirst,
MenuControl parentControl,
ref int returnDir)
{
// Remember which direction the MenuControl is drawing in
_direction = direction;
// Remember the MenuControl that initiated us
_parentControl = parentControl;
// Remember the gap in drawing the top border
_borderGap = borderGap;
// Remember any currect menu item collection
MenuCommandCollection oldCollection = _menuCommands;
// Use the passed in collection of menu commands
_menuCommands = menuCollection;
// Remember screen positions
_screenPos = screenPos;
_aboveScreenPos = aboveScreenPos;
_leftScreenPos = screenPos;
MenuCommand ret = InternalTrackPopup(selectFirst);
// Restore to original collection
_menuCommands = oldCollection;
// Remove reference no longer required
_parentControl = null;
// Return the direction key that caused dismissal
returnDir = _returnDir;
return ret;
}
protected MenuCommand InternalTrackPopup(Point screenPosTR, Point screenPosTL,
MenuCommandCollection menuCollection,
PopupMenu parentMenu, bool selectFirst,
MenuControl parentControl, bool popupRight,
bool popupDown, ref int returnDir)
{
// Default the drawing direction
_direction = Direction.Horizontal;
// Remember the MenuControl that initiated us
_parentControl = parentControl;
// We have a parent popup menu that should be consulted about operation
_parentMenu = parentMenu;
// Remember any currect menu item collection
MenuCommandCollection oldCollection = _menuCommands;
// Use the passed in collection of menu commands
_menuCommands = menuCollection;
// Remember screen positions
_screenPos = screenPosTR;
_aboveScreenPos = screenPosTR;
_leftScreenPos = screenPosTL;
// Remember display directions
_popupRight = popupRight;
_popupDown = popupDown;
MenuCommand ret = InternalTrackPopup(selectFirst);
// Restore to original collection
_menuCommands = oldCollection;
// Remove references no longer required
_parentControl = null;
_parentMenu = null;
// Return the direction key that caused dismissal
returnDir = _returnDir;
return ret;
}
public PopupMenu()
{
// Create collection objects
_drawCommands = new ArrayList();
_menuCommands = new MenuCommandCollection();
// Default the properties
_returnDir = 0;
_extraSize = 0;
_popupItem = -1;
_trackItem = -1;
_childMenu = null;
_exitLoop = false;
_popupDown = true;
_mouseOver = false;
_grabFocus = false;
_excludeTop = true;
_popupRight = true;
_parentMenu = null;
_excludeOffset = 0;
_focusCatcher = null;
_parentControl = null;
_returnCommand = null;
_oldFocus = IntPtr.Zero;
_showInfrequent = false;
_style = VisualStyle.IDE;
_lastMousePos = new Point(-1,-1);
_direction = Direction.Horizontal;
_textFont = SystemInformation.MenuFont;
// Create and initialise the timer object (but do not start it running!)
_timer = new Timer();
_timer.Interval = _selectionDelay;
_timer.Tick += new EventHandler(OnTimerExpire);
}