Code Generation Terminology¶
Types of generated code¶
- Python Wrapper
The code that exports the C++ wrapped class to Python. Python wrapper refers to all the code needed to export a C++ class to Python, and Python method/function wrapper means the specific function that calls the C++ method/function on behalf of Python. This code is invoked from the Python side.
- C++ Wrapper
This term refers to a generated C++ class that extends a class from the wrapped library. It is generated only when a wrapped C++ class is polymorphic, i.e. it has or inherits any virtual methods. The C++ Wrapper overrides the virtual methods of the wrapped C++ class with code that allows for overriding the method with a Python implementation. It checks whether a corresponding method in the Python instance exists and calls it. This code is invoked from the C++ side.
Specifying a target for modifications¶
In the typesystem files, the
class attribute is used to which class a
modification is applied (see Code Injection Semantics,
The value Target means the modification is applied to the
Python Wrapper. The value Native means the modification is applied to
the C++ Wrapper.
© 2020 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.