Code Quality Rank: L1
Programming language: C++
License: GNU General Public License v3.0 or later
Tags: GUI    

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GPU Accelerated C++ User Interface, with WYSIWYG developing tools, XML supports, built-in data binding and MVVM features.


Read the LICENSE first.

This project is licensed under the License repo.

Source code in this repo is for reference only, please use the source code in the Release repo.

You are welcome to contribute to this repo by opening pull requests.

You are allowed to build Tools/GacGen and run the executable in your local machine if it is not convenient for you to use the executable in the Release repo directly, with modification to its project file to satisfy to your need, but you should be aware that, the development progress of this repo could be ahead of the Release repo, so there could be compatible issues.


For Home Page: click here

For Gaclib: click here

For GacUI: click here

gaclib.net is a mirror to github pages above.

Content of This Project

  • The Tutorial shows how to start using this marvelous GUI library.
  • The Demos section shows you all demos using this GUI library.


Using this library requires you to use C++ source files directly in

All other files are for library development only.


This GUI library provides the following features:

  • Develop your GUI using pure C++, Workflow script, XML or even JavaScript (under construction).
  • Cross-platform abilities.
  • Rich control library. Container controls supports MVC and virtual list mode.
  • Control template system. You can write your own.
  • GPU acceleration.
  • XML resource supports.
    • You can use the provided GacGen.exe to generate multiple XML files with binary resources (images) into a compressed binary format.
    • This program will also generate C++ code behind for you. You can fill event handlers (but we suggest you use MVVM and Data Binding instead) in generated C++ files.
    • If you update your UI, GacGen.exe will merge your modification in C++ code and modification in XML together to generate new C++ code behind. Your update will still exist.
    • NOTE: You will see a very obvious mark USERIMPL(/* ... */) in the generated code. Here is where you want to add your code. All your modification outside of these places will be discarded on the next GacGen.exe run.
  • MVVM and Data Binding.
    • You can define interfaces that required to build your own MVVM pattern in XML and GacGen.exe will generate the C++ interface declaration for you.
    • You can also use Workflow expressions in Data Binding and statements in event handlers (instead of writing C++ code in code behind).


*Note that all licence references and agreements mentioned in the GacUI README section above are relevant to that project's source code only.