Calling MessageBoxW in Go

gistfile1.go

package main

import (
  "fmt"
	"syscall"
	"unsafe"
)

func main() {
	fmt.Println("Done!")
	user32 := syscall.NewLazyDLL("user32.dll")
	proc := user32.NewProc("MessageBoxW")
	str := "Hello there"
	ptr, _ := syscall.UTF16PtrFromString(str)
	proc.Call(0, uintptr(unsafe.Pointer(ptr)), uintptr(unsafe.Pointer(ptr)), 0x0)
}