[Compile]: how to complie win-64 native openimsdk.dll

[welpeng]

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Background: We have modified some of the logic in the official openim-sdk-core and need to compile a C# compatible SDK. I have currently based my work on the openim-sdk-core and openim-sdk-cpp projects and have compiled libopenimsdk.dll. However, when I compared it to the author's provided DLL, I noticed many methods were different. The author's DLL includes methods like SetMessageHandler and free_memory, which leads me to believe that the author might not have compiled their DLL from the openim-sdk-cpp project.

My question is: How can I compile a usable openimsdk.dll for use in this project?

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