ToolTip.CustomPopupPlacementCallback Property

Gets or sets the delegate handler method to use to position the ToolTip.

Namespace: System.Windows.Controls
Assembly: PresentationFramework (in presentationframework.dll)
XML Namespace:

public CustomPopupPlacementCallback CustomPopupPlacementCallback { get; set; }
/** @property */
public CustomPopupPlacementCallback get_CustomPopupPlacementCallback ()

/** @property */
public void set_CustomPopupPlacementCallback (CustomPopupPlacementCallback value)

public function get CustomPopupPlacementCallback () : CustomPopupPlacementCallback

public function set CustomPopupPlacementCallback (value : CustomPopupPlacementCallback)

You cannot use this property in XAML.

Property Value

The CustomPopupPlacementCallback delegate method that provides placement information for the ToolTip. The default value is a null reference (Nothing in Visual Basic).

The Placement property must be set to Custom for the callback delegate to be used.

The CustomPopupPlacementCallback delegate returns an array of possible points that are defined with respect to the PlacementTarget. When the Popup is displayed,, a point is chosen that maximizes the amount of the ToolTip window that is visible.

The following example shows how to set the CustomPopupPlacementCallback property. For the complete sample, see Custom ToolTip Sample.

aToolTip.Placement = PlacementMode.Custom;
aToolTip.CustomPopupPlacementCallback =
    new CustomPopupPlacementCallback(placeToolTip);

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0