private void InterruptList_DragDrop(object sender, DragEventArgs e)
{
// グリッド内のD&Dなら並び替えをする
// The mouse locations are relative to the screen, so they must be
// converted to client coordinates.
Point clientPoint = InterruptList.PointToClient(new Point(e.X, e.Y));
// Get the row index of the item the mouse is below.
int rowIndexOfItemUnderMouseToDrop =
InterruptList.IndexFromPoint(new Point(clientPoint.X, clientPoint.Y));
// If the drag operation was a move then remove and insert the row.
if (e.Effect == DragDropEffects.Move && rowIndexOfItemUnderMouseToDrop != -1)
{
int i = 0;
int k = 0;
object work;
if (rowIndexFromMouseDown < rowIndexOfItemUnderMouseToDrop)
{
while (i < InterruptList.Items.Count)
{
if (InterruptList.GetSelected(i) == true)
{
work = InterruptList.Items[i - k];
InterruptList.Items[i - k] = InterruptList.Items[rowIndexOfItemUnderMouseToDrop];
InterruptList.Items[rowIndexOfItemUnderMouseToDrop] = work;
k++;
}
i++;
}
}
else
{
i = InterruptList.Items.Count - 1;
k = 0;
while (i > 0)
{
if (InterruptList.GetSelected(i) == true)
{
work = InterruptList.Items[i + k];
InterruptList.Items[i + k] = InterruptList.Items[rowIndexOfItemUnderMouseToDrop];
InterruptList.Items[rowIndexOfItemUnderMouseToDrop] = work;
k++;
}
i--;
}
}
}
}
private void InterruptList_MouseDown(object sender, MouseEventArgs e)
{
// Get the index of the item the mouse is below.
rowIndexFromMouseDown = InterruptList.IndexFromPoint(new Point(e.X, e.Y));
if (rowIndexFromMouseDown != -1)
{
// Remember the point where the mouse down occurred.
// The DragSize indicates the size that the mouse can move
// before a drag event should be started.
Size dragSize = SystemInformation.DragSize;
// Create a rectangle using the DragSize, with the mouse position being
// at the center of the rectangle.
dragBoxFromMouseDown = new Rectangle(new Point(e.X - (dragSize.Width / 2),
e.Y - (dragSize.Height / 2)),
dragSize);
}
else
{
// Reset the rectangle if the mouse is not over an item in the ListBox.
dragBoxFromMouseDown = Rectangle.Empty;
}
}