Dragging a tree-view item typically involves processing the TVN_BEGINDRAG (or TVN_BEGINRDRAG) notification message, the WM_MOUSEMOVE message, and the WM_LBUTTONUP (or WM_RBUTTONUP) message. It also involves using the image list functions to draw the item as it is being dragged. For more information about image lists, see Image Lists.
The remainder of this section provides an example that demonstrates how to drag a tree-view item. The example consists of three functions. The first function begins the drag operation, the second drags the image, and the third ends the drag operation.