public int DragEnter(IntPtr pDataObj, ShellAPI.MK grfKeyState, ShellAPI.POINT pt, ref DragDropEffects pdwEffect)
{
mouseButtons = grfKeyState;
startEffects = pdwEffect;
br.FileView.Focus();
br.SelectionChange = false;
ReleaseCom();
dropDataObject = pDataObj;
#region Get DropItem
Point point = br.FileView.PointToClient(new Point(pt.x, pt.y));
ListViewHitTestInfo hitTest = br.FileView.HitTest(point);
if (hitTest.Item != null &&
(br.FileView.View != View.Details || hitTest.SubItem == null || hitTest.Item.Name == hitTest.SubItem.Name) &&
(hitTest.Location == ListViewHitTestLocations.Image ||
hitTest.Location == ListViewHitTestLocations.Label ||
hitTest.Location == ListViewHitTestLocations.StateImage))
{
dropListItem = hitTest.Item;
wasSelected = dropListItem.Selected;
dropListItem.Selected = true;
ShellItem item = (ShellItem)dropListItem.Tag;
parentDropItem = item;
ShellHelper.GetIDropTarget(item, out dropTargetPtr, out dropTarget);
}
else
{
dropListItem = null;
parentDropItem = br.SelectedItem;
ShellHelper.GetIDropTarget(br.SelectedItem, out dropTargetPtr, out dropTarget);
}
#endregion
if (dropTarget != null)
{
dropTarget.DragEnter(pDataObj, grfKeyState, pt, ref pdwEffect);
}
if (dropHelper != null)
{
dropHelper.DragEnter(br.Handle, pDataObj, ref pt, pdwEffect);
}
return(ShellAPI.S_OK);
}
public int DragEnter(IntPtr pDataObj, ShellAPI.MK grfKeyState, ShellAPI.POINT pt, ref DragDropEffects pdwEffect)
{
mouseButtons = grfKeyState;
br.FolderView.Focus();
br.SelectionChange = false;
lastSelectedNode = br.FolderView.SelectedNode;
ReleaseCom();
dropDataObject = pDataObj;
#region Get DropItem
Point point = br.FolderView.PointToClient(new Point(pt.x, pt.y));
TreeViewHitTestInfo hitTest = br.FolderView.HitTest(point);
dropNode = hitTest.Node;
br.FolderView.SelectedNode = dropNode;
if (dropNode != null)
{
ShellItem item = (ShellItem)dropNode.Tag;
parentDropItem = item;
if (ShellHelper.GetIDropTarget(item, out dropTargetPtr, out dropTarget))
{
dropTarget.DragEnter(pDataObj, grfKeyState, pt, ref pdwEffect);
}
}
#endregion
if (dropHelper != null)
{
dropHelper.DragEnter(br.Handle, pDataObj, ref pt, pdwEffect);
}
return(ShellAPI.S_OK);
}