1. cara install c++ visual studio https://www.youtube.com/watch?v=zv8DkkhBNR0&ab_channel=BoostMyTool 2. error .net https://stackoverflow.com/questions/65209536/microsoft-visual-studio-2019-the-project-file-cannot-be-opened-unable-to-locat 3. tambahkan script di main #include "Login.h" using namespace System; using namespace System::Windows::Forms; void main() { Application::EnableVisualStyles(); Application::SetCompatibleTextRenderingDefault(false); Project1::Login form; Application::Run(% form); }