Convert DOC to DOCX in C++

High-speed C++ library for converting DOC to DOCX

Use C++ to obtain maximum DOC to DOCX conversion speed. This is a professional software solution to import and export DOC, DOCX, and many other document formats using C++.

Convert DOC to DOCX using C++

Need to convert DOC files to DOCX programmatically? With Aspose.Words for C++ any developer can convert DOC to DOCX format with just a few lines of C++ code.

Modern document-processing C++ API creates DOCX from DOC with high speed. Test the quality of DOC to DOCX conversion right in a browser. Powerful C++ library allows converting DOC files to many popular formats.

Save DOC as DOCX in C++

The following example demonstrates how to convert DOC to DOCX in C++.

Follow the easy steps to turn a DOC file into DOCX format. Read DOC file from the local drive, then simply save it as DOCX, specifying the required file format by DOCX extension. For both DOC reading and DOCX writing you can use fully qualified filenames. The output DOCX content and formatting will be identical to the original DOC document.

Code example in C++ to convert DOC to DOCX format
Input file
Upload a file you want to convert
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Output format
Select the target format from the list
using namespace Aspose::Words;

auto doc = MakeObject<Document>(u"Input.doc");
doc->Save(u"Output.docx");
using namespace Aspose::Words; auto doc = MakeObject<Document>(u"Input.doc"); doc->Save(u"Output.docx"); using namespace Aspose::Words; auto doc = MakeObject<Document>(u"Input.doc"); for (int page = 0; page < doc->get_PageCount(); page++) { auto extractedPage = doc->ExtractPages(page, 1); extractedPage->Save(String::Format(u"Output_{0}.docx", page + 1)); } using namespace Aspose::Words; auto doc = MakeObject<Document>(); auto builder = MakeObject<DocumentBuilder>(doc); builder->InsertImage(u"Input.doc"); doc->Save(u"Output.docx"); using namespace Aspose::Words; auto doc = MakeObject<Document>(); auto builder = MakeObject<DocumentBuilder>(doc); auto shape = builder->InsertImage(u"Input.doc"); shape->get_ImageData()->Save(u"Output.docx");
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How to convert DOC to DOCX

  1. Install 'Aspose.Words for C++'.
  2. Add a library reference (import the library) to your C++ project.
  3. Open the source DOC file in C++.
  4. Call the 'Save()' method, passing an output filename with DOCX extension.
  5. Get the result of DOC conversion as DOCX.

C++ library to convert DOC to DOCX

There are three options to install Aspose.Words for C++ to your developer environment. Please choose one that resembles your needs and follow the step-by-step instructions:

System Requirements

You can use this C++ library to develop software on Microsoft Windows, Linux and macOS operating systems:

  • GCC >= 6.3.0 and Clang >= 3.9.1 are required for Linux
  • Xcode >= 12.5.1, Clang and libc++ are required for macOS

If you develop software for Linux or macOS, please check information on additional library dependencies (fontconfig and mesa-glu open-source packages) in Product Documentation.

Other Supported DOC Conversions

You can convert DOC to many other file formats:

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