oledll also uses the stdcall calling convention, andĪssumes the functions return a Windows HRESULT error code. Loads libraries which export functions using the standard cdecl callingĬonvention, while windll libraries call functions using the stdcallĬalling convention. You load libraries by accessing them as attributes of these objects. Objects, for loading dynamic link libraries. Loading dynamic link libraries ¶Ĭtypes exports the cdll, and on Windows windll and oledll So, you should not be confused if c_long is printed if you would expectĬ_int - they are actually the same type. Where sizeof(long) = sizeof(int) it is an alias to c_long. Note: Some code samples reference the ctypes c_int type. Windows, or macOS, they contain doctest directives in comments. ![]() Since some code samples behave differently under Linux, Note: The code samples in this tutorial use doctest to make sure that Used to wrap these libraries in pure Python. It provides C compatibleĭata types, and allows calling functions in DLLs or shared libraries. ![]() Ctypes - A foreign function library for Python ¶Ĭtypes is a foreign function library for Python.
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