想在crichedit中插入GIF动画,会的请帮下

[nbnokia]

找了点相关资料,看很多人都是用到QQ的imageole.dll,但我基础不是很好,有会的请祥细帮下

[珍惜生命远离CPP]

这个得写一个控件插入richedit中的.imageole.dll是QQ写好的控件

[nbnokia]

是不是要重写richedit类?重写的时候要用到imageole

[jameshooo]

richedit不需要重写，写控件就可以了。如果使用imageole的话连控件都不用写。

[xsc2001]

就按楼上所说的，在RichEdit中直接嵌入一个OLE对象，用这个OLE对象来显示gif动画。

[nbnokia]

要怎么嵌入,还有OLE和GIF动画要怎么建立关系,他们的关系是怎么样的..这些我不太明白喔

[jameshooo]

帮你找到如下代码，使用之前要通过#import语句导入imageole的类型库：

void UnmanagedInsertGif(int hwndRichEdit,wchar_t * pFilePath)
{
	HWND h=(HWND)hwndRichEdit;
	
	LPRICHEDITOLE	lpRichEditOle=NULL;
	LPOLEOBJECT		lpObject=NULL;
	LPSTORAGE       lpStorage=NULL;
	LPOLECLIENTSITE	lpClientSite=NULL;
	LPLOCKBYTES		lpLockBytes = NULL;

	REOBJECT reobject;
	ZeroMemory(&reobject, sizeof(REOBJECT));
	reobject.cbStruct = sizeof(REOBJECT);	

	HRESULT hr=S_OK;
	CLSID clsid=CLSID_NULL;
	do{
		::SendMessage(h, EM_GETOLEINTERFACE, 0, (LPARAM)&lpRichEditOle);
		if(lpRichEditOle==NULL)break;
		hr= ::CreateILockBytesOnHGlobal(NULL, TRUE, &lpLockBytes);
		if (hr != S_OK||lpLockBytes==NULL)	break;
		hr= ::StgCreateDocfileOnILockBytes(lpLockBytes,
			STGM_SHARE_EXCLUSIVE|STGM_CREATE|STGM_READWRITE, 0, &lpStorage);
		if (hr!= S_OK||lpStorage==NULL)	break;
		hr=lpRichEditOle->GetClientSite(&lpClientSite);
		if (hr!= S_OK||lpClientSite==NULL)	break;
		try
		{
			ImageOleLib::IGifAnimatorPtr	lpAnimator;
			hr = lpAnimator.CreateInstance(ImageOleLib::CLSID_GifAnimator);	
			if( FAILED(hr) )	_com_issue_error(hr);
			_bstr_t bstrPath(pFilePath);
			hr = lpAnimator->LoadFromFile(bstrPath);
			if( FAILED(hr) )	_com_issue_error(hr);
			hr = lpAnimator.QueryInterface(IID_IOleObject, (void**)&lpObject);
			if( FAILED(hr)||lpObject==NULL)	_com_issue_error(hr);
			hr=OleSetContainedObject(lpObject, TRUE);
			if( FAILED(hr) )	_com_issue_error(hr);
			hr=lpObject->GetUserClassID(&clsid);
			if( FAILED(hr) )	_com_issue_error(hr);
			reobject.clsid = clsid;
			reobject.cp = REO_CP_SELECTION;
			reobject.dvaspect = DVASPECT_CONTENT;
			reobject.dwFlags = REO_BELOWBASELINE;
			reobject.dwUser = 0;
			reobject.poleobj = lpObject;
			reobject.polesite = lpClientSite;
			reobject.pstg = lpStorage;
			SIZEL sizel={0,0};
			reobject.sizel = sizel;
			hr=lpRichEditOle->InsertObject(&reobject);
		}
		catch( _com_error e )
		{
			LPCTSTR lpszErrMessage=e.ErrorMessage();
		}

	}while(FALSE);
	if(lpLockBytes)
		lpObject->Release();	
	if(lpLockBytes)
		lpLockBytes->Release();
	if(lpClientSite)
		lpClientSite->Release();
	if(lpRichEditOle)
		lpRichEditOle->Release();
}
void UnmanagedGifTriggerFrameChange(int hwndRichEdit)
{
	HWND h=(HWND)hwndRichEdit;
	
	LPRICHEDITOLE	lpRichEditOle=NULL;
	LPOLECLIENTSITE	lpClientSite=NULL;
	LPOLECONTAINER	lpContainer=NULL;
	LPENUMUNKNOWN	lpEnumUnknown=NULL;
	HRESULT hr=S_OK;	
	do{
		::SendMessage(h, EM_GETOLEINTERFACE, 0, (LPARAM)&lpRichEditOle);
		if(lpRichEditOle==NULL)break;
		hr=lpRichEditOle->GetClientSite(&lpClientSite);
		if (hr!= S_OK||lpClientSite==NULL)	break;
		hr=lpClientSite->GetContainer(&lpContainer);
		if (hr!= S_OK||lpClientSite==NULL)	break;
		hr=lpContainer->EnumObjects(OLECONTF_EMBEDDINGS,&lpEnumUnknown);
		if (hr!= S_OK||lpEnumUnknown==NULL)	break;		

		IUnknown* pUnk=NULL;
		ULONG uFetched=0;
		for (UINT i = 0; S_OK == lpEnumUnknown->Next(1, &pUnk, &uFetched); i++)
		{
			ImageOleLib::IGifAnimator*	pAnimator=NULL;
			do{
				hr=pUnk->QueryInterface(__uuidof(ImageOleLib::IGifAnimator),(LPVOID*)&pAnimator);
				if (hr!= S_OK)	break;
				try{
					ImageOleLib::IGifAnimatorPtr	lpAnimator;
					lpAnimator.Attach(pAnimator,true);
					lpAnimator->TriggerFrameChange();
				}
				catch( _com_error e )
				{
					LPCTSTR lpszErrMessage=e.ErrorMessage();
				}
			}
			while(FALSE);
			pUnk->Release();
			if(pAnimator)
				pAnimator->Release();
		}
	}while(FALSE);
	if(lpEnumUnknown)
		lpEnumUnknown->Release();
	if(lpContainer)
		lpContainer->Release();
	if(lpRichEditOle)
		lpRichEditOle->Release();
	if(lpClientSite)
		lpClientSite->Release();
}