这样
```golang
package main
import (
"fmt"
"syscall"
)
func main() {
dl := syscall.NewLazyDLL("Kernel32.dll")
f := dl.NewProc("GetUserDefaultLangID")
a, _, _ := f.Call()
switch a & 0xff {
case 4:
fmt.Println("ZH")
case 9:
fmt.Println("EN")
}
}
```
#6
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