public bool InsertImageUseImageOle(string path)
{
try
{
IGifAnimator gif = new GifAnimatorClass();
gif.LoadFromFile(path);
gif.TriggerFrameChange();
if (gif is IOleObject)
{
int index = _index++;
REOBJECT reObj = RichEditOle.InsertOleObject(
(IOleObject)gif,
index);
RichEditOle.UpdateObjects(reObj.cp);
OleObjectList.Add(index, reObj);
return(true);
}
return(false);
}
catch (Exception)
{
return(false);
}
}
public void InsertControl(Control control)
{
if (control != null)
{
ILockBytes bytes;
IStorage storage;
IOleClientSite site;
Guid guid = Marshal.GenerateGuidForType(control.GetType());
NativeMethods.CreateILockBytesOnHGlobal(IntPtr.Zero, true, out bytes);
NativeMethods.StgCreateDocfileOnILockBytes(bytes, 0x1012, 0, out storage);
IRichEditOle.GetClientSite(out site);
REOBJECT lpreobject = new REOBJECT();
lpreobject.cp = _richEdit.TextLength;
lpreobject.clsid = guid;
lpreobject.pstg = storage;
lpreobject.poleobj = Marshal.GetIUnknownForObject(control);
lpreobject.polesite = site;
lpreobject.dvAspect = 1;
lpreobject.dwFlags = 2;
lpreobject.dwUser = 1;
IRichEditOle.InsertObject(lpreobject);
Marshal.ReleaseComObject(bytes);
Marshal.ReleaseComObject(site);
Marshal.ReleaseComObject(storage);
}
}
public void UpdateObjects(REOBJECT reObj)
{
Point positionFromCharIndex = _richEdit.GetPositionFromCharIndex(
reObj.cp);
Size size = GetSizeFromMillimeter(reObj);
Rectangle rc = new Rectangle(positionFromCharIndex, size);
_richEdit.Invalidate(rc, false);
}
public void UpdateObjects(int pos)
{
REOBJECT lpreobject = new REOBJECT();
IRichEditOle.GetObject(
pos,
lpreobject,
GETOBJECTOPTIONS.REO_GETOBJ_ALL_INTERFACES);
UpdateObjects(lpreobject);
}
public void UpdateObjects()
{
int objectCount = this.IRichEditOle.GetObjectCount();
for (int i = 0; i < objectCount; i++)
{
REOBJECT lpreobject = new REOBJECT();
IRichEditOle.GetObject(i, lpreobject, GETOBJECTOPTIONS.REO_GETOBJ_ALL_INTERFACES);
Point positionFromCharIndex = this._richEdit.GetPositionFromCharIndex(lpreobject.cp);
Rectangle rc = new Rectangle(positionFromCharIndex.X, positionFromCharIndex.Y, 50, 50);
_richEdit.Invalidate(rc, false);
}
}
public bool InsertImageFromFile(string strFilename)
{
ILockBytes bytes;
IStorage storage;
IOleClientSite site;
object obj2;
NativeMethods.CreateILockBytesOnHGlobal(IntPtr.Zero, true, out bytes);
NativeMethods.StgCreateDocfileOnILockBytes(bytes, 0x1012, 0, out storage);
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}");
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);
}
IOleObject pUnk = (IOleObject)obj2;
Guid pClsid = new Guid();
pUnk.GetUserClassID(ref pClsid);
NativeMethods.OleSetContainedObject(pUnk, true);
REOBJECT lpreobject = new REOBJECT();
lpreobject.cp = _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;
IRichEditOle.InsertObject(lpreobject);
Marshal.ReleaseComObject(bytes);
Marshal.ReleaseComObject(site);
Marshal.ReleaseComObject(storage);
Marshal.ReleaseComObject(pUnk);
return(true);
}
public REOBJECT InsertOleObject(
IOleObject oleObject,
int index)
{
if (oleObject == null)
{
return(null);
}
ILockBytes pLockBytes;
NativeMethods.CreateILockBytesOnHGlobal(IntPtr.Zero, true, out pLockBytes);
IStorage pStorage;
NativeMethods.StgCreateDocfileOnILockBytes(
pLockBytes,
(uint)(STGM.STGM_SHARE_EXCLUSIVE | STGM.STGM_CREATE | STGM.STGM_READWRITE),
0,
out pStorage);
IOleClientSite pOleClientSite;
IRichEditOle.GetClientSite(out pOleClientSite);
Guid guid = new Guid();
oleObject.GetUserClassID(ref guid);
NativeMethods.OleSetContainedObject(oleObject, true);
REOBJECT reoObject = new REOBJECT();
reoObject.cp = _richEdit.TextLength;
reoObject.clsid = guid;
reoObject.pstg = pStorage;
reoObject.poleobj = Marshal.GetIUnknownForObject(oleObject);
reoObject.polesite = pOleClientSite;
reoObject.dvAspect = (uint)DVASPECT.DVASPECT_CONTENT;
reoObject.dwFlags = (uint)REOOBJECTFLAGS.REO_BELOWBASELINE;
reoObject.dwUser = (uint)index;
IRichEditOle.InsertObject(reoObject);
Marshal.ReleaseComObject(pLockBytes);
Marshal.ReleaseComObject(pOleClientSite);
Marshal.ReleaseComObject(pStorage);
return(reoObject);
}
private Size GetSizeFromMillimeter(REOBJECT lpreobject)
{
using (Graphics graphics = Graphics.FromHwnd(_richEdit.Handle))
{
Point[] pts = new Point[1];
graphics.PageUnit = GraphicsUnit.Millimeter;
pts[0] = new Point(
lpreobject.sizel.Width / 100,
lpreobject.sizel.Height / 100);
graphics.TransformPoints(
CoordinateSpace.Device,
CoordinateSpace.Page,
pts);
return(new Size(pts[0]));
}
}
public bool InsertImageUseDynamic(string path)
{
try
{
IDynamicGif gif = new DynamicGifClass();
gif.LoadFromFile(path);
gif.Play();
if (gif is IOleObject)
{
int index = _index++;
REOBJECT reObj = RichEditOle.InsertOleObject(
(IOleObject)gif,
index);
RichEditOle.UpdateObjects(reObj.cp);
OleObjectList.Add(index, reObj);
return(true);
}
return(false);
}
catch (Exception)
{
return(false);
}
}
