Question

我正在使用WebBrowser类打开文档，更改值，保存和打印。问题是，它打印的文件包括标题（“第1页1”）和页脚（文档的根目录+日期）

我查看了文档，但没有找到删除它们的方法。甚至可以使用WebBrowser还是我应该寻找替代方案？

Answer 1

有一种解决方案，可能不像它本来的那样清洁。由于WebBrowser是Internet Explorer中的设置，因此可以更改注册表中的值。幸运的是，这些值属于HKCU，因此不需要管理权限。

查看https://stackoverflow.com/a/1321314/1630928

Answer 2

这样做的诀窍是将包含VarRents的ByRef SafeArray的Variant传递给WebBrowser控件。我还没想出如何从C＃中做到这一点。这是其他正在解决使用托管C ++的同一问题的人

http://www.limilabs.com/blog/printing-in-webbrowser-control-custom-header-and-footer

Answer 3

不是C＃，但这是我基于现已失效的KB267240想到的C ++代码。它将在打印时删除页眉和页脚：

BOOL bRes = FALSE;

//Get IWebBrowser2 from your IE control
CComPtr<IWebBrowser2> pWebBrowser = this->GetIWebBrowser2();
if(pWebBrowser)
{
    HRESULT hr;
    COleVariant varNull;

    SAFEARRAYBOUND psabBounds[1];
    SAFEARRAY *psaHeadFoot;
    hr = S_OK;

    VARIANT vArg;
    BOOL bGot_vArg = FALSE;

    VARIANT vHeadStr, vFootStr;
    long rgIndices;
    VariantInit(&vHeadStr);
    VariantInit(&vFootStr);

    // Initialize header and footer parameters to send to ExecWB().
    psabBounds[0].lLbound = 0;
    psabBounds[0].cElements = 3;
    psaHeadFoot = SafeArrayCreate(VT_VARIANT, 1, psabBounds);
    if(psaHeadFoot)
    {
        // Argument 1: Header
        vHeadStr.vt = VT_BSTR;
        vHeadStr.bstrVal = SysAllocString(L" ");    //Must be at least one space
        if (vHeadStr.bstrVal)
        {
            // Argument 2: Footer
            vFootStr.vt = VT_BSTR;
            vFootStr.bstrVal = SysAllocString(L" ");    //Must be at least one space
            if(vFootStr.bstrVal)
            {
                rgIndices = 0;
                SafeArrayPutElement(psaHeadFoot, &rgIndices, static_cast<void *>(&vHeadStr));
                rgIndices = 1;
                SafeArrayPutElement(psaHeadFoot, &rgIndices, static_cast<void *>(&vFootStr));
                rgIndices = 2;
                SafeArrayPutElement(psaHeadFoot, &rgIndices, static_cast<void *>(&varNull));    //Set stream to NULL as we don't need it

                //NOTE: Currently, the SAFEARRAY variant must be passed by using
                // the VT_BYREF vartype when you call the ExecWeb method.
                VariantInit(&vArg);
                vArg.vt = VT_ARRAY | VT_BYREF;
                vArg.parray = psaHeadFoot;

                //Got it
                bGot_vArg = TRUE;
            }
        }
    }


    //Did we get all the vars?
    if(bGot_vArg)
    {
        if(SUCCEEDED(hr = pWebBrowser->ExecWB(OLECMDID_PRINT, OLECMDEXECOPT_PROMPTUSER, &vArg, NULL)))
        {
            //All good
            bRes = TRUE;
        }
    }
    else
    {
        //Use fallback (that will keep the footer & header)
        if(SUCCEEDED(hr = pWebBrowser->ExecWB(OLECMDID_PRINT, OLECMDEXECOPT_PROMPTUSER, varNull, varNull)))
        {
            //Printed via fallback
            bRes = TRUE;
        }
    }

    //Clean up
    VariantClear(&vHeadStr);
    VariantClear(&vFootStr);
    if(psaHeadFoot)
    {
        SafeArrayDestroy(psaHeadFoot);
        psaHeadFoot = NULL;
    }
}

WebBrowser类 - 如何在没有页眉/页脚的情况下打印文档？

3 个答案: