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In this article, the editor introduces in detail "C# how to call C++ dynamic library interface functions and callback functions" with detailed content, clear steps and proper handling of details. I hope this article "how to call C++ dynamic library interface functions and callback functions" can help you solve your doubts.

1. Preface

Requirements: at present, C has written a dynamic library and completed the product development requirements. C # needs to call the DLL interface of the dynamic library written by C to develop a complete software. DLL dynamic library contains common interface functions and callback functions.

Development environment: win10 64-bit, VS2017

two。 Common API function call example 2.1 C++ end authoring API

(1) declare the interface to be provided in the header file and export the interface to facilitate the call by C#

/ / invisible reference example EXTERN_C TOOLLIBRARY_API char* Version (void) with return value; / / no return value with pointer reference example EXTERN_C TOOLLIBRARY_API void SetApplicationDirPath (char* buff)

(2) Source code

Char* Version (void) {return version_str;} void SetApplicationDirPath (char* buff) {std::string str = buff; printf ("incoming parameters:% s\ n", buff); std::cout

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