Engine中如何实现对元素的剪切、复制、粘贴功能

IActiveView act = axMapControl1.ActiveView; 

IMap map = act.FocusMap; 

IGraphicsContainer container = map as IGraphicsContainer; 

IScreenDisplay scrdis = act.ScreenDisplay; 



IPictureElement4 pictureElement = new PngPictureElementClass(); 

pictureElement.ImportPictureFromFile(@D:\image.png); 



IEnvelope envelope = new EnvelopeClass(); 

envelope.PutCoords(1, 1, 25, 25); 



IElement element = pictureElement as IElement; 

element.Geometry = envelope; 

container.AddElement(element, 0); 

act.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null); 



IGraphicsContainerSelect grasele = map as IGraphicsContainerSelect; 

grasele.SelectAllElements(); 



IViewManager viewmanager = map as IViewManager; 

ISelection sele = viewmanager.ElementSelection; 



if (sele.CanCut()) 

MessageBox.Show(can cut);