You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: runewidth_windows.go
    path of file: ./repos/kubeedge/vendor/github.com/mattn/go-runewidth
    
    the code of the file until where you have to start completion: // +build windows
// +build !appengine

package runewidth

import (
	"syscall"
)

var (
	kernel32               = syscal
    
func IsEastAsian() bool {
	r1, _, _ := procGetConsoleOutputCP.Call()
	if r1 == 0 {
		return false
	}

	switch int(r1) {
	case 932, 51932, 936, 949, 950:
		return true
	}

	return false
}