jiangsheng，帮帮忙

[boybaby]

关于我的VC不支持IHTMLElement2接口，但系统肯定是支持的，我应该怎么调用这个接口。我不太懂COM，最好能给一些源码。谢谢

[蒋晟]

1 升级你的SDK

http://www.microsoft.com/msdownload/platformsdk/sdkupdate/
2 示例

HOWTO: Programmatically Copy an IMG Element to the Clipboard

Q293125


--------------------------------------------------------------------------------
The information in this article applies to:

Microsoft Internet Explorer (Programming) versions 4.0, 4.01, 4.01 SP1, 4.01 SP2, 5, 5.01, 5.01 SP1, 5.5, 5.5 Service Pack 1
Microsoft Visual Studio, Enterprise Edition 6.0

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SUMMARY
This article illustrates how to programmatically copy an image on a Web page (an IMG element) to the clipboard.



MORE INFORMATION
The best way to copy an image on a Web page to the clipboard is to use the execCommand method of the controlRange object. The following code illustrates to do this from within script on the page itself (given the ID of the image to be copied):


function copyImage(sImgID)
{
var ctrlRange = document.body.createControlRange();
ctrlRange.add(document.all(sImgID));
ctrlRange.execCommand("Copy");
}
In Microsoft Visual C++, this method call translates to IHTMLControlRange::execCommand. The following code illustrates how to implement the same technique in Visual C++ given an IDispatch pointer to the document that contains the image and the ID of the IMG element wrapped in a VARIANT structure (with a type VT_BSTR):

STDMETHODIMP CMyBrowser::CopyImage(LPDISPATCH pDispDoc, VARIANT vImageID)
{
HRESULT hr = E_FAIL;
IHTMLDocument2* pDoc = NULL;
IHTMLElement* pelmBody = NULL;
IHTMLElement2* pelmBodyTwo = NULL;
IDispatch* pdispImgElement = NULL;
IDispatch* pdispCtrlRange = NULL;
IHTMLElementCollection* pColl = NULL;
IHTMLControlElement* pCtrlElement = NULL;
IHTMLControlRange* pCtrlRange = NULL;
BSTR bstrCommand = SysAllocString(L"Copy");
VARIANT_BOOL vbReturn;
VARIANT vEmpty;
VariantInit(&vEmpty);

if (pDispDoc == NULL)
goto Cleanup;

if (FAILED(pDispDoc->QueryInterface(IID_IHTMLDocument2, (void**) &pDoc)))
goto Cleanup;

if (FAILED(pDoc->get_all(&pColl)))
goto Cleanup;

if (FAILED(pColl->item(vImageID, vEmpty, &pdispImgElement))
|| pdispImgElement == NULL)
goto Cleanup;

if (FAILED(pDoc->get_body(&pelmBody)) || pelmBody == NULL)
goto Cleanup;

if (FAILED(pelmBody->QueryInterface(IID_IHTMLElement2, (void**) &pelmBodyTwo))
|| pelmBodyTwo == NULL)
goto Cleanup;

if (FAILED(pelmBodyTwo->createControlRange(&pdispCtrlRange))
|| pdispCtrlRange == NULL)
goto Cleanup;

if (FAILED(pdispCtrlRange->QueryInterface(IID_IHTMLControlRange, (void**) &pCtrlRange))
|| pCtrlRange == NULL)
goto Cleanup;

if (FAILED(pdispImgElement->QueryInterface(IID_IHTMLControlElement, (void**) &pCtrlElement))
|| pCtrlElement == NULL)
goto Cleanup;

hr = pCtrlRange->add(pCtrlElement);

if (SUCCEEDED(hr))
hr = pCtrlRange->execCommand(bstrCommand, VARIANT_FALSE, vEmpty, &vbReturn);

pCtrlElement->Release();
hr = S_OK;

Cleanup:

SysFreeString(bstrCommand);

if (pCtrlRange)
pCtrlRange->Release();

if (pdispCtrlRange)
pdispCtrlRange->Release();

if (pelmBodyTwo)
pelmBodyTwo->Release();

if (pelmBody)
pelmBody->Release();

if (pdispImgElement)
pdispImgElement->Release();

if (pColl)
pColl->Release();

if (pDispDoc)
pDispDoc->Release();

return hr;
}

[boybaby]

新的补丁太大了，在网上下载敢想像。

[boybaby]

我不是要拷一个网页上的图像，而是要把整个网页页面所有的内容存为一个图像。包括图片和文字做为一个整体，然后存起来，是这样。

[蒋晟]

只能显示出来之后抓屏了

[boybaby]

问题是很多网页不会一页显示完的，要用滚动栏才能看到全部，抓屏可能只能抓当前显示的页面。