Linking sqlite.lib in a Visual C++ project

I following this tututorial: http://ift.tt/1DSBSEt to can start using sqlite in a Visual C++ App.

But I've created a Windows Forms Application instead.

I added this code in int main ():

sqlite3 *dbb;
char *zErrMsg;
int rc;

rc = sqlite3_open("test.db", &dbb);

And I get the following errors:

    Error   2   error LNK2031: unable to generate p/invoke for "extern "C" int __clrcall sqlite3_open(char const *,struct sqlite3 * *)" (?sqlite3_open@@$$J0YMHPBDPAPAUsqlite3@@@Z); calling convention missing in metadata D:\Info\visual studio\bProject\bProject\bProject.obj
Warning 3   warning LNK4248: unresolved typeref token (01000027) for 'sqlite3'; image may not run   D:\Info\visual studio\bProject\bProject\bProject.obj
Error   4   error LNK2028: unresolved token (0A00001B) "extern "C" int __clrcall sqlite3_open(char const *,struct sqlite3 * *)" (?sqlite3_open@@$$J0YMHPBDPAPAUsqlite3@@@Z) referenced in function "int __clrcall main(cli::array<class System::String ^ >^)" (?main@@$$HYMHP$01AP$AAVString@System@@@Z)    D:\Info\visual studio\bProject\bProject\bProject.obj
Error   5   error LNK2019: unresolved external symbol "extern "C" int __clrcall sqlite3_open(char const *,struct sqlite3 * *)" (?sqlite3_open@@$$J0YMHPBDPAPAUsqlite3@@@Z) referenced in function "int __clrcall main(cli::array<class System::String ^ >^)" (?main@@$$HYMHP$01AP$AAVString@System@@@Z) D:\Info\visual studio\bProject\bProject\bProject.obj
Error   6   error LNK1120: 2 unresolved externals   D:\Info\visual studio\bProject\Debug\bProject.exe

I searched about few hours what it means and how I can resolve them, but I found only that the library should not be linked correctly ...

Any ideas ?