描述:
下面这段代码是类似于用QQ的ImageOle.dll在m_myedit(CRichEditCtrl)插入gif动画的代码，为什么我在插入自己开发的ATL控件（Full Control的）时，程序运行到m_lpObject->DoVerb(...)时会出现这样的错误：Expresion:pT->m_spClientSite?
DFGSDFGDSLib::IgifPtr m_lpAnimator;
_bstr_t sFileName = "1.gif";
HWND hWndRT = m_myedit.m_hWnd;
LPLOCKBYTES lpLockBytes = NULL;
SCODE sc;
HRESULT hr;
//print to RichEdit' s IClientSite
LPOLECLIENTSITE m_lpClientSite;
//ptr 2 storage
LPSTORAGE m_lpStorage;
//the object 2 b insert 2
LPOLEOBJECT m_lpObject;
//Create lockbytes
sc = ::CreateILockBytesOnHGlobal(NULL, TRUE, &lpLockBytes);
if (sc != S_OK)
AfxThrowOleException(sc);
ASSERT(lpLockBytes != NULL);
//use lockbytes to create storage
sc = ::StgCreateDocfileOnILockBytes(lpLockBytes,
STGM_SHARE_EXCLUSIVE |STGM_CREATE |STGM_READWRITE, 0, &m_lpStorage);
if (sc != S_OK)
{
VERIFY(lpLockBytes->Release() == 0);
lpLockBytes = NULL;
AfxThrowOleException(sc);
}
ASSERT(m_lpStorage != NULL);
//get the ClientSite of the very RichEditCtrl
m_myedit.GetIRichEditOle()->GetClientSite(&m_lpClientSite);
ASSERT(m_lpClientSite != NULL);
try
{
//Initlize COM interface
hr = ::CoInitialize(NULL) ;//( NULL, COINIT_APARTMENTTHREADED );
if( FAILED(hr) )
return;//_com_issue_error(hr);
//Get GifAnimator object
//here, I used a smart point, so I do not need to free it
hr = m_lpAnimator.CreateInstance(DFGSDFGDSLib::CLSID_gif);
if( FAILED(hr) )
return;
//get the IOleObject
hr = m_lpAnimator->QueryInterface(IID_IOleObject, (void**)&m_lpObject);
if( FAILED(hr) )
return;//_com_issue_error(hr);
VARIANT_BOOL ret;
//do frame changing
ret = m_lpAnimator->TriggerFrameChange();
//Set it 2 b inserted
OleSetContainedObject(m_lpObject, TRUE);
//2 insert in 2 richedit, you need a struct of REOBJECT
REOBJECT reobject;
ZeroMemory(&reobject, sizeof(REOBJECT));
reobject.cbStruct = sizeof(REOBJECT);
CLSID clsid;
sc = m_lpObject->GetUserClassID(&clsid);
if (sc != S_OK)
AfxThrowOleException(sc);
//set clsid
reobject.clsid = clsid;
//can be selected
reobject.cp = REO_CP_SELECTION;
//content, but not static
reobject.dvaspect = DVASPECT_CONTENT;
//goes in the same line of text line
reobject.dwFlags = REO_BELOWBASELINE; //REO_RESIZABLE |
reobject.dwUser = 0;
//the very object
reobject.poleobj = m_lpObject;
//client site contain the object
reobject.polesite = m_lpClientSite;
//the storage
reobject.pstg = m_lpStorage;
SIZEL sizel;
sizel.cx = sizel.cy = 0;
reobject.sizel = sizel;
m_myedit.GetIRichEditOle()->InsertObject(&reobject);
::SendMessage(hWndRT, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
//show it
m_lpObject->DoVerb(OLEIVERB_UIACTIVATE, NULL, m_lpClientSite, 0, hWndRT, NULL);
m_lpObject->DoVerb(OLEIVERB_SHOW, NULL, m_lpClientSite, 0, hWndRT, NULL);
//redraw the window to show animation
//RedrawWindow();
if (m_lpClientSite)
{
m_lpClientSite->Release();
m_lpClientSite = NULL;
}
if (m_lpObject)
{
m_lpObject->Release();
m_lpObject = NULL;
}
if (m_lpStorage)
{
m_lpStorage->Release();
m_lpStorage = NULL;
}
}
catch( ... )
{
AfxMessageBox("Error");
::CoU