diff --git a/terminal_size_windows.go b/terminal_size_windows.go
index 71b8bec..94b7ed0 100644
--- a/terminal_size_windows.go
+++ b/terminal_size_windows.go
@@ -3,61 +3,22 @@
 package uilive
 
 import (
-	"math"
-	"syscall"
+	"os"
 	"unsafe"
 )
 
-type consoleFontInfo struct {
-	font     uint32
-	fontSize coord
-}
-
-const (
-	SmCxMin = 28
-	SmCyMin = 29
-)
-
-var (
-	tmpConsoleFontInfo        consoleFontInfo
-	moduleUser32              = syscall.NewLazyDLL("user32.dll")
-	procGetCurrentConsoleFont = kernel32.NewProc("GetCurrentConsoleFont")
-	getSystemMetrics          = moduleUser32.NewProc("GetSystemMetrics")
-)
-
-func getCurrentConsoleFont(h syscall.Handle, info *consoleFontInfo) (err error) {
-	r0, _, e1 := syscall.Syscall(
-		procGetCurrentConsoleFont.Addr(), 3, uintptr(h), 0, uintptr(unsafe.Pointer(info)),
-	)
-	if int(r0) == 0 {
-		if e1 != 0 {
-			err = error(e1)
-		} else {
-			err = syscall.EINVAL
-		}
-	}
-	return
-}
-
 func getTermSize() (int, int) {
-	out, err := syscall.Open("CONOUT$", syscall.O_RDWR, 0)
+	out, err := os.Open("CONOUT$")
 	if err != nil {
 		return 0, 0
 	}
+	defer out.Close()
 
-	x, _, err := getSystemMetrics.Call(SmCxMin)
-	y, _, err := getSystemMetrics.Call(SmCyMin)
-
-	if x == 0 || y == 0 {
-		if err != nil {
-			panic(err)
-		}
-	}
-
-	err = getCurrentConsoleFont(out, &tmpConsoleFontInfo)
-	if err != nil {
-		panic(err)
+	var csbi consoleScreenBufferInfo
+	ret, _, _ := procGetConsoleScreenBufferInfo.Call(out.Fd(), uintptr(unsafe.Pointer(&csbi)))
+	if ret == 0 {
+		return 0, 0
 	}
 
-	return int(math.Ceil(float64(x) / float64(tmpConsoleFontInfo.fontSize.x))), int(math.Ceil(float64(y) / float64(tmpConsoleFontInfo.fontSize.y)))
+	return int(csbi.window.right - csbi.window.left + 1), int(csbi.window.bottom - csbi.window.top + 1)
 }