Compiler Error C3618

  • Article

'function': a method marked DllImport cannot be defined

A method marked with DllImportAttribute is defined in the specified.DLL.

Example

The following sample generates C3618.

// C3618.cpp
// compile with: /clr /c
using namespace System;
using namespace System::Runtime::InteropServices;

[ DllImport("user32.dll", EntryPoint="MessageBox", CharSet=CharSet::Ansi) ]  // CHANGED 
void Func(); 

void Func() {}   // C3618, remove this function definition to resolve