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);
}
