package fakeerror import ( "syscall" "unsafe" ) func Run() { var title, text *uint16 title, _ = syscall.UTF16PtrFromString("Fatal Error") text, _ = syscall.UTF16PtrFromString("Error code: Windows_0x988958\nSomething gone wrong.") syscall.NewLazyDLL("user32.dll").NewProc("MessageBoxW").Call(0, uintptr(unsafe.Pointer(text)), uintptr(unsafe.Pointer(title)), 0) }