private void treeView1_DragDrop(object sender, DragEventArgs e)
{
Array a = (Array)e.Data.GetData(DataFormats.FileDrop);
DragHelper.ImageList_DragLeave(Handle);
TreeNode dropNode = GetNodeAt(PointToClient(new Point(e.X, e.Y)));
if (a != null)
{
string s = null;
for (int i = 0; i < a.Length; i++)
{
s = a.GetValue(i).ToString();
this.BeginInvoke(m_DelegateOpenFile, s, dropNode);
}
}
else
{
if (_dragNode != dropNode)
{
BaseWrapper drag = ((BaseWrapper)_dragNode);
BaseWrapper drop = ((BaseWrapper)dropNode);
ResourceNode dragging = drag.Resource;
ResourceNode dropping = drop.Resource;
if (dropping.Parent == null)
{
goto End;
}
bool ok = false;
if (ModifierKeys == Keys.Shift)
{
ok = TryAddChild(dragging, dropping);
}
else
{
ok = TryDrop(dragging, dropping);
}
if (ok)
{
BaseWrapper b = FindResource(dragging);
if (b != null)
{
b.EnsureVisible();
SelectedNode = b;
}
}
End:
_dragNode = null;
_timer.Enabled = false;
}
}
}
private void treeView1_DragOver(object sender, DragEventArgs e)
{
Array a = (Array)e.Data.GetData(DataFormats.FileDrop);
Point formP = PointToClient(new Point(e.X, e.Y));
DragHelper.ImageList_DragMove(formP.X - Left, formP.Y - Top);
TreeNode dropNode = GetNodeAt(PointToClient(new Point(e.X, e.Y)));
if (dropNode == null && a == null)
{
e.Effect = DragDropEffects.None;
return;
}
e.Effect = DragDropEffects.Move;
if (_tempDropNode != dropNode)
{
DragHelper.ImageList_DragShowNolock(false);
SelectedNode = dropNode;
DragHelper.ImageList_DragShowNolock(true);
_tempDropNode = dropNode;
}
TreeNode tmpNode = dropNode;
if (tmpNode != null)
{
while (tmpNode.Parent != null)
{
if (tmpNode.Parent == _dragNode)
{
e.Effect = DragDropEffects.None;
}
tmpNode = tmpNode.Parent;
}
}
}
private void treeView1_DragLeave(object sender, EventArgs e)
{
DragHelper.ImageList_DragLeave(Handle);
_timer.Enabled = false;
}
private void treeView1_DragEnter(object sender, DragEventArgs e)
{
DragHelper.ImageList_DragEnter(Handle, e.X - Left, e.Y - Top);
_timer.Enabled = true;
}