diff --git a/cwriter/writer_windows.go b/cwriter/writer_windows.go
index 788180f..a684a74 100644
--- a/cwriter/writer_windows.go
+++ b/cwriter/writer_windows.go
@@ -3,69 +3,64 @@
 package cwriter
 
 import (
-	"syscall"
 	"unsafe"
 
 	"github.com/mattn/go-isatty"
+	"golang.org/x/sys/windows"
 )
 
-var kernel32 = syscall.NewLazyDLL("kernel32.dll")
+var kernel32 = windows.NewLazySystemDLL("kernel32.dll")
 
 var (
-	procGetConsoleScreenBufferInfo = kernel32.NewProc("GetConsoleScreenBufferInfo")
 	procSetConsoleCursorPosition   = kernel32.NewProc("SetConsoleCursorPosition")
 	procFillConsoleOutputCharacter = kernel32.NewProc("FillConsoleOutputCharacterW")
 )
 
-type coord struct {
-	x int16
-	y int16
-}
-
-type smallRect struct {
-	left   int16
-	top    int16
-	right  int16
-	bottom int16
-}
-
-type consoleScreenBufferInfo struct {
-	size              coord
-	cursorPosition    coord
-	attributes        uint16
-	window            smallRect
-	maximumWindowSize coord
-}
-
-func (w *Writer) clearLines() {
+func (w *Writer) clearLines() error {
 	if !w.isTerminal && isatty.IsCygwinTerminal(w.fd) {
-		w.ansiCuuAndEd()
-		return
+		return w.ansiCuuAndEd()
 	}
 
-	info := new(consoleScreenBufferInfo)
-	procGetConsoleScreenBufferInfo.Call(w.fd, uintptr(unsafe.Pointer(info)))
+	var info windows.ConsoleScreenBufferInfo
+	if err := windows.GetConsoleScreenBufferInfo(windows.Handle(w.fd), &info); err != nil {
+		return err
+	}
 
-	info.cursorPosition.y -= int16(w.lineCount)
-	if info.cursorPosition.y < 0 {
-		info.cursorPosition.y = 0
+	info.CursorPosition.Y -= int16(w.lineCount)
+	if info.CursorPosition.Y < 0 {
+		info.CursorPosition.Y = 0
 	}
-	procSetConsoleCursorPosition.Call(w.fd, uintptr(uint32(uint16(info.cursorPosition.y))<<16|uint32(uint16(info.cursorPosition.x))))
+	_, _, _ = procSetConsoleCursorPosition.Call(
+		w.fd,
+		uintptr(uint32(uint16(info.CursorPosition.Y))<<16|uint32(uint16(info.CursorPosition.X))),
+	)
 
 	// clear the lines
-	cursor := &coord{
-		x: info.window.left,
-		y: info.cursorPosition.y,
+	cursor := &windows.Coord{
+		X: info.Window.Left,
+		Y: info.CursorPosition.Y,
 	}
-	count := uint32(info.size.x) * uint32(w.lineCount)
-	procFillConsoleOutputCharacter.Call(w.fd, uintptr(' '), uintptr(count), *(*uintptr)(unsafe.Pointer(cursor)), uintptr(unsafe.Pointer(new(uint32))))
+	count := uint32(info.Size.X) * uint32(w.lineCount)
+	_, _, _ = procFillConsoleOutputCharacter.Call(
+		w.fd,
+		uintptr(' '),
+		uintptr(count),
+		*(*uintptr)(unsafe.Pointer(cursor)),
+		uintptr(unsafe.Pointer(new(uint32))),
+	)
+	return nil
 }
 
 // GetSize returns the visible dimensions of the given terminal.
 //
 // These dimensions don't include any scrollback buffer height.
 func GetSize(fd uintptr) (width, height int, err error) {
-	info := new(consoleScreenBufferInfo)
-	procGetConsoleScreenBufferInfo.Call(fd, uintptr(unsafe.Pointer(info)))
-	return int(info.window.right - info.window.left), int(info.window.bottom - info.window.top), nil
+	var info windows.ConsoleScreenBufferInfo
+	if err := windows.GetConsoleScreenBufferInfo(windows.Handle(fd), &info); err != nil {
+		return 0, 0, err
+	}
+	// terminal.GetSize from crypto/ssh returns following line with both "+ 1",
+	// but looks like this causing issue #66. Removing both "+ 1" fixed the issue.
+	// return int(info.Window.Right - info.Window.Left + 1), int(info.Window.Bottom - info.Window.Top + 1), nil
+	return int(info.Window.Right - info.Window.Left), int(info.Window.Bottom - info.Window.Top), nil
 }