//go:build windows

package osthread

import (
	"syscall"

	"github.com/ebitengine/purego"
)

func onmainthread() bool {
	return mainThreadId == getCurrentThreadId()
}

var (
	mainThreadId       int32
	getCurrentThreadId func() int32
)

func init() {
	kernel32 := syscall.NewLazyDLL("kernel.dll").Handle()
	purego.RegisterLibFunc(&getCurrentThreadId, kernel32, "GetCurrentThreadId")
	mainThreadId = getCurrentThreadId()
}