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When the RadRadialMenu is used as RadialContextMenu its placement is determined by the placement of the Popup in which it is placed. As any Popup in the WPF framework its Placement could be set to Right, Left, Bottom, Mouse, Absolute etc. Setting that placement is done via the PopupPlacement
of the RadRadialMenu control. When the PopupPlacement is set to Mouse/MousePoint it is rendered immediately underneath the mouse cursor. In such scenarios if it is desired that the menu's center button is offset in order to make it appear not exactly underneath the cursor we have provided two properties of type double which could be used. To offset the placement in horizontal and vertical direction all you need to is set the PopupHorizontalOffset
properties of the menu.
I created and attached a sample project to my response of the described approach. Hope this is helpful. You can also take a loot at our XAML SDK repository
at GitHub which includes runnable projects of many useful scenarios for all Telerik UI for WPF and Silverlight. You can also check the SDK Samples Browser
that provides a more convenient approach in exploring and executing those examples. The SDK Samples Browser application is available for download from this link
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