static void toolboxControl_DragDrop(object sender, DragEventArgs e)
{
string data = null;
if (e.Data.GetDataPresent(System.Windows.Forms.DataFormats.UnicodeText))
{
data = e.Data.GetData(System.Windows.Forms.DataFormats.UnicodeText) as string;
}
if (e.Data.GetDataPresent(typeof(ScriptEditor).FullName + ".toolbox"))
{
object obj = e.Data.GetData(typeof(ScriptEditor).FullName + ".toolbox");
if (obj == toolboxControl)
{
if (data != null)
{
if (toolboxControl.Items.Contains(data))
{
int id = toolboxControl.IndexFromPoint(toolboxControl.PointToClient(new Point(e.X, e.Y)));
if (id < 0 || id >= toolboxControl.Items.Count)
{
id = toolboxControl.Items.Count - 1;
}
if ((string)toolboxControl.Items[id] == data)
{
return;
}
toolboxControl.Items.Remove(data);
toolboxControl.Items.Insert(id, data);
toolboxControl.SelectedItem = data;
}
else
{
toolboxControl.Items.Add(data);
toolboxControl.SelectedItem = data;
}
}
}
else
{
if (data != null && !toolboxControl.Items.Contains(data))
{
toolboxControl.Items.Add(data);
toolboxControl.SelectedItem = data;
}
}
}
else if (data != null && !toolboxControl.Items.Contains(data))
{
toolboxControl.Items.Add(data);
toolboxControl.SelectedItem = data;
}
}
private void Setline(ListBox target, bool visible, DragEventArgs e)
{
panel1.Visible = visible;
if (target == null)
{
return;
}
Point p = new Point(e.X, e.Y);
p = (target).PointToClient(p);
int indexOfItem = EventBox.IndexFromPoint(p.X, p.Y);
int y = target.PointToClient(p).Y;
int x1 = target.Left;
int x2 = target.Width;
int ih = target.ItemHeight;
int y1 = (int)Math.Min(Math.Round((double)(y / ih)),target.Items.Count) * ih + target.Top;
panel1.Left = x1;
panel1.Top = y1;
panel1.Width = x2;
panel1.Height = 2;
}
private void ListDragTarget_DragOver(object sender, System.Windows.Forms.DragEventArgs e)
{
// Determine whether string data exists in the drop data. If not, then
// the drop effect reflects that the drop cannot occur.
if (!e.Data.GetDataPresent(typeof(System.String)))
{
e.Effect = DragDropEffects.None;
DropLocationLabel.Text = "None - no string data.";
return;
}
// Set the effect based upon the KeyState.
if ((e.KeyState & (8 + 32)) == (8 + 32) &&
(e.AllowedEffect & DragDropEffects.Link) == DragDropEffects.Link)
{
// KeyState 8 + 32 = CTL + ALT
// Link drag-and-drop effect.
e.Effect = DragDropEffects.Link;
}
else if ((e.KeyState & 32) == 32 &&
(e.AllowedEffect & DragDropEffects.Link) == DragDropEffects.Link)
{
// ALT KeyState for link.
e.Effect = DragDropEffects.Link;
}
else if ((e.KeyState & 4) == 4 &&
(e.AllowedEffect & DragDropEffects.Move) == DragDropEffects.Move)
{
// SHIFT KeyState for move.
e.Effect = DragDropEffects.Move;
}
else if ((e.KeyState & 8) == 8 &&
(e.AllowedEffect & DragDropEffects.Copy) == DragDropEffects.Copy)
{
// CTL KeyState for copy.
e.Effect = DragDropEffects.Copy;
}
else if ((e.AllowedEffect & DragDropEffects.Move) == DragDropEffects.Move)
{
// By default, the drop action should be move, if allowed.
e.Effect = DragDropEffects.Move;
}
else
{
e.Effect = DragDropEffects.None;
}
// Get the index of the item the mouse is below.
// The mouse locations are relative to the screen, so they must be
// converted to client coordinates.
indexOfItemUnderMouseToDrop =
ListDragTarget.IndexFromPoint(ListDragTarget.PointToClient(new Point(e.X, e.Y)));
// Updates the label text.
if (indexOfItemUnderMouseToDrop != ListBox.NoMatches)
{
DropLocationLabel.Text = "Drops before item #" + (indexOfItemUnderMouseToDrop + 1);
}
else
{
DropLocationLabel.Text = "Drops at the end.";
}
}
private int getIndex(ListBox list, int x, int y)
{
Point point = list.PointToClient(new Point(x, y));
int index = list.IndexFromPoint(point);
if (index < 0) { index = list.Items.Count - 1; } //off the end of the list
return index;
}
