diff --git a/_examples/complex/main.go b/_examples/complex/main.go
index aa45b74..cbd1582 100644
--- a/_examples/complex/main.go
+++ b/_examples/complex/main.go
@@ -16,7 +16,7 @@
 
 func main() {
 	doneWg := new(sync.WaitGroup)
-	p := mpb.New(mpb.WithWidth(64), mpb.WithWaitGroup(doneWg))
+	p := mpb.New(mpb.WithWaitGroup(doneWg))
 	numBars := 4
 
 	var bars []*mpb.Bar
@@ -44,6 +44,7 @@
 		i := i
 		go func() {
 			task := fmt.Sprintf("Task#%02d:", i)
+			// ANSI escape sequences are not supported on Windows OS
 			job := "\x1b[31;1;4minstalling\x1b[0m"
 			// preparing delayed bars
 			b := p.AddBar(rand.Int63n(101)+100,
diff --git a/cwriter/writer.go b/cwriter/writer.go
index 9ec1ec6..bb50336 100644
--- a/cwriter/writer.go
+++ b/cwriter/writer.go
@@ -7,7 +7,7 @@
 	"io"
 	"os"
 
-	"golang.org/x/crypto/ssh/terminal"
+	"github.com/mattn/go-isatty"
 )
 
 // NotATTY not a TeleTYpewriter error.
@@ -30,13 +30,14 @@
 	w := &Writer{out: out}
 	if f, ok := out.(*os.File); ok {
 		w.fd = f.Fd()
-		w.isTerminal = terminal.IsTerminal(int(w.fd))
+		w.isTerminal = isatty.IsTerminal(w.fd)
 	}
 	return w
 }
 
 // Flush flushes the underlying buffer.
 func (w *Writer) Flush(lineCount int) (err error) {
+	// some terminals interpret clear 0 lines as clear 1
 	if w.lineCount > 0 {
 		w.clearLines()
 	}
@@ -63,9 +64,9 @@
 
 // GetWidth returns width of underlying terminal.
 func (w *Writer) GetWidth() (int, error) {
-	if w.isTerminal {
-		tw, _, err := terminal.GetSize(int(w.fd))
-		return tw, err
+	if !w.isTerminal {
+		return -1, NotATTY
 	}
-	return -1, NotATTY
+	tw, _, err := GetSize(w.fd)
+	return tw, err
 }
diff --git a/cwriter/writer_posix.go b/cwriter/writer_posix.go
index 3fb8b7d..e836cec 100644
--- a/cwriter/writer_posix.go
+++ b/cwriter/writer_posix.go
@@ -2,8 +2,21 @@
 
 package cwriter
 
-import "fmt"
+import (
+	"fmt"
+
+	"golang.org/x/sys/unix"
+)
 
 func (w *Writer) clearLines() {
 	fmt.Fprintf(w.out, cuuAndEd, w.lineCount)
 }
+
+// GetSize returns the dimensions of the given terminal.
+func GetSize(fd uintptr) (width, height int, err error) {
+	ws, err := unix.IoctlGetWinsize(int(fd), unix.TIOCGWINSZ)
+	if err != nil {
+		return -1, -1, err
+	}
+	return int(ws.Col), int(ws.Row), nil
+}
diff --git a/cwriter/writer_windows.go b/cwriter/writer_windows.go
index 7125289..7a3ed5b 100644
--- a/cwriter/writer_windows.go
+++ b/cwriter/writer_windows.go
@@ -14,7 +14,6 @@
 	procGetConsoleScreenBufferInfo = kernel32.NewProc("GetConsoleScreenBufferInfo")
 	procSetConsoleCursorPosition   = kernel32.NewProc("SetConsoleCursorPosition")
 	procFillConsoleOutputCharacter = kernel32.NewProc("FillConsoleOutputCharacterW")
-	procFillConsoleOutputAttribute = kernel32.NewProc("FillConsoleOutputAttribute")
 )
 
 type coord struct {
@@ -41,8 +40,9 @@
 	if !w.isTerminal {
 		fmt.Fprintf(w.out, cuuAndEd, w.lineCount)
 	}
-	var info consoleScreenBufferInfo
-	procGetConsoleScreenBufferInfo.Call(w.fd, uintptr(unsafe.Pointer(&info)))
+
+	info := new(consoleScreenBufferInfo)
+	procGetConsoleScreenBufferInfo.Call(w.fd, uintptr(unsafe.Pointer(info)))
 
 	info.cursorPosition.y -= int16(w.lineCount)
 	if info.cursorPosition.y < 0 {
@@ -51,10 +51,19 @@
 	procSetConsoleCursorPosition.Call(w.fd, uintptr(uint32(uint16(info.cursorPosition.y))<<16|uint32(uint16(info.cursorPosition.x))))
 
 	// clear the lines
-	cursor := coord{
+	cursor := &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))))
+	procFillConsoleOutputCharacter.Call(w.fd, uintptr(' '), uintptr(count), *(*uintptr)(unsafe.Pointer(cursor)), uintptr(unsafe.Pointer(new(uint32))))
 }
+
+// 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
+}
diff --git a/go.mod b/go.mod
index 1d8d529..d95571b 100644
--- a/go.mod
+++ b/go.mod
@@ -3,8 +3,8 @@
 require (
 	github.com/VividCortex/ewma v1.1.1
 	github.com/acarl005/stripansi v0.0.0-20180116102854-5a71ef0e047d
-	golang.org/x/crypto v0.0.0-20200423211502-4bdfaf469ed5
-	golang.org/x/sys v0.0.0-20200420163511-1957bb5e6d1f // indirect
+	github.com/mattn/go-isatty v0.0.12
+	golang.org/x/sys v0.0.0-20200509044756-6aff5f38e54f
 )
 
 go 1.14
diff --git a/go.sum b/go.sum
index 99ca1bf..56d6d99 100644
--- a/go.sum
+++ b/go.sum
@@ -2,12 +2,8 @@
 github.com/VividCortex/ewma v1.1.1/go.mod h1:2Tkkvm3sRDVXaiyucHiACn4cqf7DpdyLvmxzcbUokwA=
 github.com/acarl005/stripansi v0.0.0-20180116102854-5a71ef0e047d h1:licZJFw2RwpHMqeKTCYkitsPqHNxTmd4SNR5r94FGM8=
 github.com/acarl005/stripansi v0.0.0-20180116102854-5a71ef0e047d/go.mod h1:asat636LX7Bqt5lYEZ27JNDcqxfjdBQuJ/MM4CN/Lzo=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20200423211502-4bdfaf469ed5 h1:Q7tZBpemrlsc2I7IyODzhtallWRSm4Q0d09pL6XbQtU=
-golang.org/x/crypto v0.0.0-20200423211502-4bdfaf469ed5/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
-golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200420163511-1957bb5e6d1f h1:gWF768j/LaZugp8dyS4UwsslYCYz9XgFxvlgsn0n9H8=
-golang.org/x/sys v0.0.0-20200420163511-1957bb5e6d1f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+github.com/mattn/go-isatty v0.0.12 h1:wuysRhFDzyxgEmMf5xjvJ2M9dZoWAXNNr5LSBS7uHXY=
+github.com/mattn/go-isatty v0.0.12/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Kysco4FUpU=
+golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200509044756-6aff5f38e54f h1:mOhmO9WsBaJCNmaZHPtHs9wOcdqdKCjF6OPJlmDM3KI=
+golang.org/x/sys v0.0.0-20200509044756-6aff5f38e54f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=