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I have just started a C# project and want to import a C++ .lib and it's corresponding header (.h) file.
I've read various posts that all mention .dll, rather than .lib, which is confusing me.
The image below shows the .lib and .h file I'm referring to, all I've done is drag them into the project.
Can anyone point me to a clearer explanation of how to go about doing this? I'm sure it can't be as hard as it seems.
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a file contains the Standard C library and the "libm. a" the mathematics routines, which the linker would then link in. Other operating systems such as Microsoft Windows use a ". lib" extension for libraries and an ". obj" extension for object files.
If you declare a C++ function to have C linkage, it can be called from a function compiled by the C compiler. A function declared to have C linkage can use all the features of C++, but its parameters and return type must be accessible from C if you want to call it from C code.
C language has numerous libraries that include predefined functions to make programming easier. In C language, header files contain the set of predefined standard library functions. You request to use a header file in your program by including it with the C preprocessing directive “#include”.
There is no technical difference. The compiler will happily let you include a . c file, or compile a . h file directly, if you want to.
The reason is primarily due to the fact that C++ is an unmanaged language. C# is a managed language. Managed and unmanaged refers to how a language manages memory.
C++ you must do your own memory management (allocating and freeing),C# .NET Framework does memory management with a garbage collector.You must make sure all of the places you call new, must call delete, and the same goes for malloc and free if you are using the C conventions.
You will have to create a bunch of wrapper classes around your function calls, and make sure you aren't leaking any memory in your C++ code.
Your main problem (to my knowledge) is you won't be able to call those functions straight in C# because you can't statically link unmanaged code into managed code.
You will have to write a .dll to wrap all your library functions in C++. Once you do, you can use the C# interop functionality to call those functions from the dll.
[DllImport("your_functions.dll", CharSet = CharSet.Auto)] public extern void your_function(); If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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