public bool InsertImageFromFile(string strFilename)
{
CCWin.SkinControl.ILockBytes bytes;
CCWin.SkinControl.IStorage storage;
CCWin.SkinControl.IOleClientSite site;
object obj2;
CCWin.Win32.NativeMethods.CreateILockBytesOnHGlobal(IntPtr.Zero, true, out bytes);
CCWin.Win32.NativeMethods.StgCreateDocfileOnILockBytes(bytes, 0x1012, 0, out storage);
this.IRichEditOle.GetClientSite(out site);
FORMATETC pFormatEtc = new FORMATETC();
pFormatEtc.cfFormat = (CLIPFORMAT) 0;
pFormatEtc.ptd = IntPtr.Zero;
pFormatEtc.dwAspect = DVASPECT.DVASPECT_CONTENT;
pFormatEtc.lindex = -1;
pFormatEtc.tymed = TYMED.TYMED_NULL;
Guid riid = new Guid("{00000112-0000-0000-C000-000000000046}");
Guid rclsid = new Guid("{00000000-0000-0000-0000-000000000000}");
CCWin.Win32.NativeMethods.OleCreateFromFile(ref rclsid, strFilename, ref riid, 1, ref pFormatEtc, site, storage, out obj2);
if (obj2 == null)
{
Marshal.ReleaseComObject(bytes);
Marshal.ReleaseComObject(site);
Marshal.ReleaseComObject(storage);
return false;
}
CCWin.SkinControl.IOleObject pUnk = (CCWin.SkinControl.IOleObject) obj2;
Guid pClsid = new Guid();
pUnk.GetUserClassID(ref pClsid);
CCWin.Win32.NativeMethods.OleSetContainedObject(pUnk, true);
REOBJECT lpreobject = new REOBJECT();
lpreobject.cp = this._richEdit.TextLength;
lpreobject.clsid = pClsid;
lpreobject.pstg = storage;
lpreobject.poleobj = Marshal.GetIUnknownForObject(pUnk);
lpreobject.polesite = site;
lpreobject.dvAspect = 1;
lpreobject.dwFlags = 2;
lpreobject.dwUser = 0;
this.IRichEditOle.InsertObject(lpreobject);
Marshal.ReleaseComObject(bytes);
Marshal.ReleaseComObject(site);
Marshal.ReleaseComObject(storage);
Marshal.ReleaseComObject(pUnk);
return true;
}
public static extern int OleCreateFromFile([In] ref Guid rclsid, [MarshalAs(UnmanagedType.LPWStr)] string lpszFileName, [In] ref Guid riid, uint renderopt, ref FORMATETC pFormatEtc, IOleClientSite pClientSite, IStorage pStg, [MarshalAs(UnmanagedType.IUnknown)] out object ppvObj);