calling function in dll not working

[vivendi]

I'm trying to call a function in a dll. I created this dll myself too. When i run my code i get am 'Exception unhandled' error. Can someone please tell me what i'm doing wrong?

In my exe file i basically do this:

typedef int (__stdcall * voidFunc)(int);


//in my main function
	dllEngine = LoadLibrary ( L"test_engine.dll" );

	if ( dllEngine == 0 )
		MessageBoxW ( NULL, L"failed loading DLL", L"ERROR", MB_OK );

	testfunc = (voidFunc)GetProcAddress ( dllEngine, "testfunc" );
	int x = testfunc(5);

This is the relevant code in my dll

extern int testfunc ( int x );


int testfunc (int x)
{
	MessageBoxW ( NULL, L"test", L"blaat", MB_OK );
	return x;
}