dodałem NULL i mam taki error
error LNK2028: unresolved token (0A00001F) "extern "C" struct HINSTANCE__ * __stdcall ShellExecuteA(struct HWND__ *,char const *,char const *,char const *,char const *,int)" (?ShellExecuteA@@$$J224YGPAUHINSTANCE__@@PAUHWND__@@PBD111H@Z) referenced in function "private: void __clrcall Multisamp::Form1::button1_Click(class System::Object ^,class System::EventArgs ^)" (?button1_Click@Form1@Multisamp@@$$FA$AAMXP$AAVObject@System@@P$AAVEventArgs@4@@Z)
error LNK2019: unresolved external symbol "extern "C" struct HINSTANCE__ * __stdcall ShellExecuteA(struct HWND__ *,char const *,char const *,char const *,char const *,int)" (?ShellExecuteA@@$$J224YGPAUHINSTANCE__@@PAUHWND__@@PBD111H@Z) referenced in function "private: void __clrcall Multisamp::Form1::button1_Click(class System::Object ^,class System::EventArgs ^)" (?button1_Click@Form1@Multisamp@@$$FA$AAMXP$AAVObject@System@@P$AAVEventArgs@4@@Z)
fatal error LNK1120: 2 unresolved externals