public DragDropInformation(TreeNode sourceNode, IDragDropClient client)
{
if (sourceNode == null)
{
throw new ArgumentNullException("sourceNode");
}
if (client == null)
{
throw new ArgumentNullException("client");
}
this.SourceNode = sourceNode;
this.Client = client;
}
public void DoDragDrop(IDragDropClient client, TreeNode node, DragDropEffects effects)
{
if (client == null)
{
throw new ArgumentNullException("client");
}
if (node == null)
{
throw new ArgumentNullException("node");
}
using (ImageList imgList = this.CreateImageList(node))
{
TreeViewDragDropHelper.ImageList_BeginDrag(imgList.Handle, 0, 0, 0);
try
{
node.TreeView.DragDrop += new DragEventHandler(this.TreeView_DragDrop);
node.TreeView.DragEnter += new DragEventHandler(this.TreeView_DragEnter);
node.TreeView.DragLeave += new EventHandler(this.TreeView_DragLeave);
node.TreeView.DragOver += new DragEventHandler(this.TreeView_DragOver);
try
{
using (new ScrollHelper(node.TreeView))
node.TreeView.DoDragDrop(new DragDropInformation(node, client), effects);
}
finally
{
TreeView tree = node.TreeView;
if (tree != null)
{
tree.DragDrop -= new DragEventHandler(this.TreeView_DragDrop);
tree.DragEnter -= new DragEventHandler(this.TreeView_DragEnter);
tree.DragLeave -= new EventHandler(this.TreeView_DragLeave);
tree.DragOver -= new DragEventHandler(this.TreeView_DragOver);
}
}
}
finally
{
TreeViewDragDropHelper.ImageList_EndDrag();
}
}
}
public DragDropInformation(TreeNode sourceNode, IDragDropClient client)
{
if (sourceNode == null)
throw new ArgumentNullException("sourceNode");
if (client == null)
throw new ArgumentNullException("client");
this.SourceNode = sourceNode;
this.Client = client;
}
public void DoDragDrop(IDragDropClient client, TreeNode node, DragDropEffects effects)
{
if (client == null)
throw new ArgumentNullException("client");
if (node == null)
throw new ArgumentNullException("node");
using (ImageList imgList = this.CreateImageList(node))
{
TreeViewDragDropHelper.ImageList_BeginDrag(imgList.Handle, 0, 0, 0);
try
{
node.TreeView.DragDrop += new DragEventHandler(this.TreeView_DragDrop);
node.TreeView.DragEnter += new DragEventHandler(this.TreeView_DragEnter);
node.TreeView.DragLeave += new EventHandler(this.TreeView_DragLeave);
node.TreeView.DragOver += new DragEventHandler(this.TreeView_DragOver);
try
{
using(new ScrollHelper(node.TreeView))
node.TreeView.DoDragDrop(new DragDropInformation(node, client), effects);
}
finally
{
TreeView tree = node.TreeView;
if (tree != null)
{
tree.DragDrop -= new DragEventHandler(this.TreeView_DragDrop);
tree.DragEnter -= new DragEventHandler(this.TreeView_DragEnter);
tree.DragLeave -= new EventHandler(this.TreeView_DragLeave);
tree.DragOver -= new DragEventHandler(this.TreeView_DragOver);
}
}
}
finally
{
TreeViewDragDropHelper.ImageList_EndDrag();
}
}
}
