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Hi! I want use WPF DiagramToolBox for grouping items with ability to expanding/collapsing groups and drag items outside toolbox. I am overriding drag and drop mechanism with my own code by registering handlers for events: I am creating dragging adorner inside PreviewDragEnter handler and refreshing its position inside PreviewDragOver. When adorner is moved inside DiagramToolBox control everything is absolutely fine. But when any part of an adorner leaves DiagramToolBox control area then adorner is overlayed by another controls and when mouse leaves DiagramToolBox adorner disappears completely. When I am dragging items from ListView adorner is shown at top of another controls. Do you have any suggestions for possible reasons of that behavior? Do I need make specials steps to override default DiagramToolBox drag and drop behavior? |
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Hello Could you please send us a simple visual studio project of what you have got so far? I'll be able to debug this and get back to you with the solution.
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