在richtextbox中插入图片得方法很多，不过一般不能动，要实现动画至少应该实现一个activex控件，不过.net对activex的支持很差，我试过用c#写了个activex，不过效果很差，根本久不能动。
（备注）这里的差不多是从别人的c++代码（蒋晟）和msdn中得来的（所以，我不是个高手）
这是我在gowk中的一部分代码（有删减）拿来共同学习
using System;using System.Drawing;using System.Windows.Forms;using System.Runtime.InteropServices;
using gowk.common;
namespace gowk.controls{ public class GRichTextBox_ :RichTextBox { public GRichTextBox_() { } #region insert ole public void Insersert(IOleObject oleObj) { RichEidtOle ole=new RichEidtOle(this); ole.InsertOle(oleObj); } public void Insersert(Control control) { RichEidtOle ole=new RichEidtOle(this); ole.InsertControl(control); } public void InsertImage(string imageFile) { Image img=Image.FromFile(imageFile); Type t=Type.GetTypeFromProgID("ImageOle.GifAnimator.1"); object o=System.Activator.CreateInstance(t); bool b=o is IOleObject; if(!b)throw(new System.Exception("无法创建Ole对象")); t.InvokeMember("LoadFromFile", System.Reflection.BindingFlags.Public|System.Reflection.BindingFlags.Instance|System.Reflection.BindingFlags.InvokeMethod, null, o, new object[]{imageFile}); if(b) this.Insersert((IOleObject)o); } class RichEidtOle { private RichTextBox _richEdit; private IRichEditOle _RichEditOle; public RichEidtOle(RichTextBox richEdit) { this._richEdit=richEdit; } private IRichEditOle IRichEditOle { get { if(this._RichEditOle==null) { this._RichEditOle=SendMessage(this._richEdit.Handle,API.EM_GETOLEINTERFACE,0); } return this._RichEditOle; } } public void InsertControl(Control control) { if(control==null)return; IntPtr pLockBytes=API.CreateILockBytesOnHGlobal(IntPtr.Zero,true); IntPtr pStorage=API.StgCreateDocfileOnILockBytes(pLockBytes,STGM.STGM_SHARE_EXCLUSIVE|STGM.STGM_CREATE|STGM.STGM_READWRITE,0); IntPtr pOleClientSite=this.IRichEditOle.GetClientSite(); REOBJECT roeObject=new REOBJECT(); roeObject.clsid=Marshal.GenerateGuidForType(control.GetType()); roeObject.pstg=pStorage; roeObject.poleobj=Marshal.GetIUnknownForObject(control); roeObject.polesite=pOleClientSite; roeObject.dvaspect=DVASPECT.DVASPECT_CONTENT; roeObject.dwFlags=ReoObjectFlag.REO_BELOWBASELINE; this.IRichEditOle.InsertObject(roeObject); control.Select(); control.Focus(); } public void InsertOle(IOleObject oleObject) { if(oleObject==null)return; Guid guid=oleObject.GetUserClassID(); IntPtr pLockBytes=API.CreateILockBytesOnHGlobal(IntPtr.Zero,true); IntPtr pStorage=API.StgCreateDocfileOnILockBytes(pLockBytes,STGM.STGM_SHARE_EXCLUSIVE|STGM.STGM_CREATE|STGM.STGM_READWRITE,0); IntPtr pOleClientSite=this.IRichEditOle.GetClientSite(); REOBJECT roeObject=new REOBJECT(); roeObject.clsid=guid; roeObject.pstg=pStorage; roeObject.poleobj=Marshal.GetIUnknownForObject(oleObject); roeObject.polesite=pOleClientSite; roeObject.dvaspect=DVASPECT.DVASPECT_CONTENT; roeObject.dwFlags=ReoObjectFlag.REO_BELOWBASELINE; this.IRichEditOle.InsertObject(roeObject); } [DllImport("User32.dll", CharSet=CharSet.Auto,PreserveSig=false)] public static extern IRichEditOle SendMessage(IntPtr hWnd, int message, int wParam); } #endregion }}
