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COM

为了将 ONLYOFFICE Document Builder 集成到任何应用程序中，使用了 COM doctrenderer 库。

类​

当前应用程序版本包含四个主要类：

名称描述
CDocBuilder由 ONLYOFFICE Document Builder 用于生成文档文件（文本文档、电子表格、演示文稿、表单文档、PDF）。
CDocBuilderContext由 ONLYOFFICE Document Builder 用于获取工作所需的 JS 上下文。
CDocBuilderContextScope栈分配类，用于为在局部作用域内执行的所有操作设置执行上下文。
CDocBuilderValue由 ONLYOFFICE Document Builder 用于获取已调用的 JS 命令的结果。它表示 JS 对象的包装器。

示例​

#include <iostream>
#include <comutil.h>
#include <atlcomcli.h>
#include <atlsafe.h>

#include "../../src/docbuilder_midl.h"

#ifdef _UNICODE
# pragma comment(lib, "comsuppw.lib")
#else
# pragma comment(lib, "comsupp.lib")
#endif

#define RELEASEINTERFACE(pinterface)  \
{                                     \
    if (NULL != pinterface)           \
    {                                 \
        pinterface->Release();        \
        pinterface = NULL;            \
    }                                 \
}

int main(int argc, char *argv[])
{
    CoInitialize(NULL);

    IONLYOFFICEDocBuilder* oBuilder = NULL;
    IONLYOFFICEDocBuilderContext* oContext = NULL;
    IONLYOFFICEDocBuilderContextScope* oScope = NULL;

    IONLYOFFICEDocBuilderValue* oGlobal = NULL;
    IONLYOFFICEDocBuilderValue* oApi = NULL;
    IONLYOFFICEDocBuilderValue* oDocument = NULL;
    IONLYOFFICEDocBuilderValue* oParagraph = NULL;
    IONLYOFFICEDocBuilderValue* oContent = NULL;

    HRESULT hr = CoCreateInstance(__uuidof(CONLYOFFICEDocBuilder), NULL, CLSCTX_ALL, __uuidof(IONLYOFFICEDocBuilder), (void**)&oBuilder);

    if (FAILED(hr))
    {
        CoUninitialize();
        return 1;
    }

    VARIANT_BOOL b;

    oBuilder->Initialize();
    oBuilder->CreateFile(_bstr_t("docx"), &b);
    oBuilder->GetContext(&oContext);

    oContext->CreateScope(&oScope);
    oContext->GetGlobal(&oGlobal);

    oGlobal->GetProperty(_bstr_t("Api"), &oApi);
    oContext->CreateArray(1, &oContent);

    oApi->Call(_bstr_t("GetDocument"), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), &oDocument);
    oApi->Call(_bstr_t("CreateParagraph"), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), &oParagraph);
    oContext->CreateArray(1, &oContent);

    oParagraph->Call(_bstr_t("SetSpacingAfter"), ATL::CComVariant(1000), ATL::CComVariant(VARIANT_FALSE), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), NULL);
    oParagraph->Call(_bstr_t("AddText"), ATL::CComVariant("Hello from COM!"), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), NULL);
    oContent->Set(0, oParagraph);

    oDocument->Call(_bstr_t("InsertContent"), ATL::CComVariant(oContent), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), ATL::CComVariant(), NULL);

    oBuilder->SaveFile(_bstr_t("docx"), _bstr_t("result.docx"), &b);

    RELEASEINTERFACE(oContent);

    IONLYOFFICEDocBuilderValue* oArr = NULL;
    CComSafeArray<BYTE> arr;
    arr.Add(1);
    oContext->CreateTypedArray(ATL::CComVariant(arr), 1, &oArr);

    oBuilder->CloseFile();
    oBuilder->Dispose();

    RELEASEINTERFACE(oBuilder);
    RELEASEINTERFACE(oContext);
    RELEASEINTERFACE(oScope);

    RELEASEINTERFACE(oGlobal);
    RELEASEINTERFACE(oApi);
    RELEASEINTERFACE(oDocument);
    RELEASEINTERFACE(oParagraph);
    RELEASEINTERFACE(oContent);

    CoUninitialize();
    return 0;
}