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https://docs.microsoft.com/en-us/windows/uwp/design/input/drag-and-drop

Drag and drop lets the user transfer data between applications or within an application using a standard gesture (press-hold-and-pan with the finger or press-and-pan with a mouse or a stylus). Important APIs: CanDrag property, AllowDrop property. The drag source, which is the application or area where the drag gesture is triggered, provides the ...

https://docs.microsoft.com/en-us/dotnet/desktop/wpf/advanced/drag-and-drop-overview

A drag-and-drop operation is analogous to a copy-and-paste or cut-and-paste operation that is used to transfer data from one object or application to another by using the system clipboard. Both types of operations require: A source object that provides the data. A way to temporarily store the transferred data.

https://docs.microsoft.com/en-us/windows/win32/com/drag-and-drop

Drag-and-drop code source Implementation and use; IDropSource interface: Implemented by the object containing the dragged data, referred to as the drag source.: IDropTarget interface: Implemented by the object that is intended to accept the drop, referred to as the drop target.: DoDragDrop function: Implemented by OLE and used to initiate a drag and drop operation.

https://docs.microsoft.com/en-us/dotnet/desktop/winforms/advanced/walkthrough...

All drag-and-drop operations begin with dragging. The functionality to enable data to be collected when dragging begins is implemented in the DoDragDrop method. In the following example, the MouseDown event is used to start the drag operation because it is the most intuitive (most drag-and-drop actions begin with the mouse button being ...