C++ Gui Test using ImGui

Build dir is included just for the sake of being an example. In applications, build dir needs to be cleaned and restarted using command:

• cmake . -B <build_dir_path>
• or enter build dir and cmake ..

Cmake works only for linux at this time since some dependencies fails to connect on mingw environment in linux.

Dependencies: For opengl & opengl example

• glfw3 (pacman -S glfw)
• xorg (pacman -S install xorg)