Popup.CustomPopupPlacementCallback Property

Gets or sets a delegate handler method that positions the Popup control. This is a dependency property.

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

[BindableAttribute(false)]
public CustomPopupPlacementCallback CustomPopupPlacementCallback { get; set; }
You cannot set this property in XAML.

Property Value

Type: System.Windows.Controls.Primitives.CustomPopupPlacementCallback
The CustomPopupPlacementCallback delegate method that provides placement information for the Popup control. The default is null.

Identifier field

CustomPopupPlacementCallbackProperty

Metadata properties set to true

None

The following example shows how to set a CustomPopupPlacementCallback delegate.

popup1.CustomPopupPlacementCallback =
    new CustomPopupPlacementCallback(placePopup);
public CustomPopupPlacement[] placePopup(Size popupSize,
                                           Size targetSize,
                                           Point offset)
{
    CustomPopupPlacement placement1 =
       new CustomPopupPlacement(new Point(-50, 100), PopupPrimaryAxis.Vertical);

    CustomPopupPlacement placement2 =
        new CustomPopupPlacement(new Point(10, 20), PopupPrimaryAxis.Horizontal);

    CustomPopupPlacement[] ttplaces =
            new CustomPopupPlacement[] { placement1, placement2 };
    return ttplaces;
}

More Code

How to: Specify a Custom Popup Position This example shows how to specify a custom position for a Popup control when the Placement property is set to Custom.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0
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