Transparency

The ASPxPopupControl supports the Transparency feature, which means you can create custom-shaped popup windows. For this purpose, set the control's BackColor property to Transparent and provide the appropriate background image.

In this demo, puzzle elements are represented by ASPxPopupControl instances. Each puzzle element's shape is defined by a specific partly transparent .png image which is set as a background image of the corresponding popup control (via the control's BackgroundImage property). The BackColor properties of popup controls are set to the Transparent value. In order to enable popup windows to be dragged, the AllowDragging properties are set to True and the DragElement properties are set to Window, within popup controls.