I use a PartEditBox as a base for my custom editor. When the drop-down button is clicked my editor opens a drop-down displaying a textblock, a textbox and a button. I want the drop-down to remain open until the button is clicked even if the user clicks onto another control, similar to .NET's popup-control.
As proposed by the documentation, I set the DropDownStaysOpen property to "true" - without effect. I can not see any different behaviour when I set the property to true or false. As soon as I click outside the drop-down it closes.
Additionally, I am confused by the naming of the property and its documentation ("true if the drop-down closes when the control is no longer in focus; otherwise, false. The default value is false."). I would expect that "true" keeps the drop-down open?