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OCCT 3D Viewer setup within Qt

This sample demonstrates how to use Open CASCADE Technology (OCCT) 3D Viewer within a window created using Qt5 on Windows and Linux platforms.

sample screenshot

OCCT QOpenGLWidget sample

Project within occt-qopenglwidget subfolder shows initialization of OCCT 3D viewer from OpenGL context created by QOpenGLWidget within Qt5 Widgets application.

Project could be built in two ways:

  • Using CMake. See CMakeLists.txt in the folder defining building rules. Use cmake-gui or command-line interface for configuring project dependencies (Qt, OCCT).
  • Using qmake. See occt-qopenglwidget-sample.pro in the folder defining building rules. Create custom.pri from custom.pri.template with filled in paths to OCCT.

Qt Creator could be used to open qmake project directly. Make sure to copy necessary dependencies (OCCT, FreeType, FreeImage, etc. - depending on OCCT building configuration) into sample folder or configuring environment (PATH, LD_LIBRARY_PATH).

Building has been checked within OCCT 7.6.0.

sample screenshot