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Interfacing C# with native C++ DLLs via P/Invoke and UnmanagedCallersOnly

dotnet_native_aot
C# Veteran
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Vor 1 Monaten · Jul 21, 2026 4:50 AM
#1

Exporting native C function pointers from C# for C++ applications:

CSHARP
public static class NativeExports {
    [UnmanagedCallersOnly(EntryPoint = "CalculatePrediction")]
    public static void CalculatePrediction(float targetX, float targetY, float* outX, float* outY) {
        *outX = targetX + 5.0f;
        *outY = targetY + 2.0f;
    }
}

C++ programs can load your C# DLL directly with LoadLibraryA and call GetProcAddress("CalculatePrediction") just like any standard C++ DLL!

vtable_slayer
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Vor 1 Monaten · Jul 21, 2026 7:07 AM
#2

[UnmanagedCallersOnly] eliminates the need for heavyweight C++/CLI wrappers. Great feature.

hook_doctor
Hooking Specialist
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Vor 1 Monaten · Jul 22, 2026 1:05 AM
#3

Clean interop bridge between C# logic and C++ hooks.