复制，移动TreeView节点

procedure AddSubTree(DestTree: TTreeView; SourceNode, DestNode: TTreeNode; AddState: Boolean);
var
TempNode, TempNode1: TTreeNode;
I : integer;
begin
TempNode := DestNode;
with DestTree do begin
if Not (AddState) then TempNode := Items.AddChild(DestNode, sourceNode.Text);
if SourceNode.HasChildren then begin
for I := 0 to SourceNode.Count-1 do begin
if I>0 then
TempNode := Items.AddChild(TempNode.Parent, SourceNode.Item.Text)
else
TempNode := Items.AddChild(TempNode, SourceNode.Item.Text);
AddSubTree(DestTree, SourceNode.Item, TempNode, True);
end;
end;
end;
end;
procedure MoveSubTreeView(SourceTreeView, DestTreeView: TTreeView; Keep: Boolean);
var
TempLevel, TempIndex : integer;
I, J : integer;
TempNode : array of TTreeNode;
TempNode1 : TTreeNode;
Yes_No : Boolean;
OldOnChanging, OldOnChanging1 : TTVChangingEvent;
OldOnChange, OldOnChange1 : TTVChangedEvent;
IsSelected : TTreeNode;
begin
OldOnChanging := DestTreeView.OnChanging;
DestTreeView.OnChanging := Nil;
OldOnChange := DestTreeView.OnChange;
DestTreeView.OnChange := Nil;
OldOnChanging1 := SourceTreeView.OnChanging;
SourceTreeView.OnChanging := Nil;
OldOnChange1 := SourceTreeView.OnChange;
SourceTreeView.OnChange := Nil;
IsSelected := SourceTreeView.Selected;
TempLevel := SourceTreeView.Selected.Level;
setlength(TempNode, TempLevel+1);
Yes_No := False;
TempNode1 := Nil;
TempIndex := FindNode(DestTreeView, SourceTreeView.Selected.Text);
if TempIndex>-1 then begin
DestTreeView.Items[TempIndex].Delete;
end;
with SourceTreeView do begin
TempNode[TempLevel] := Selected;
if TempLevel>0 then
for I := TempLevel-1 downto 0 do begin
TempNode := TempNode[I+1].Parent;
end;
end;
with DestTreeView.Items do begin
if Count>0 then begin
for I := TempLevel downto 0 do
for J := Count-1 downto 0 do begin
if (TempNode.Text=DestTreeView.Items[J].Text) and (TempNode1=Nil) then begin
if I=Templevel then Yes_no := True;
TempNode1 := DestTreeView.Items[J];
end;
end;
end;
if TempNode1=Nil then
for I := 0 to TempLevel-1 do begin
TempNode1 := AddChild(TempNode1, TempNode.Text);
end
else
for I := TempNode1.Level+1 to TempLevel-1 do begin
TempNode1 := AddChild(TempNode1, TempNode.Text);
end;
end;
　
AddSubTree(DestTreeView, IsSelected, TempNode1, False);//Yes_No);
if (Not (Keep)) then begin
if (IsSelected.Parent<>Nil) and (IsSelected.Parent.Count<1) then
IsSelected.Parent.Delete
else
IsSelected.Delete;
end;
DestTreeView.SortType := stData;
DestTreeView.OnChanging := OldOnChanging;
DestTreeView.OnChange := OldOnChange;
SourceTreeView.OnChanging := OldOnChanging1;
SourceTreeView.OnChange := OldOnChange1;
end;