/// <summary>
/// Разгрупиране формите.
/// </summary>
public void UnGroup()
{
for (int i = 0; i < Selection.Count; i++)
{
if (Selection[i] is GroupShape)
{
var ungroupedShapes = (Selection[i] as GroupShape).SubItems;
ShapeList.AddRange(ungroupedShapes);
ShapeList.RemoveAt(ShapeList.IndexOf(Selection[i]));
Selection.AddRange(ungroupedShapes);
Selection.RemoveAt(i);
i -= 1;
}
}
}