Progress.

README.md

@@ -13,8 +13,9 @@ Implemented dialogs:
 * [text entry](https://github.com/ncruces/zenity/wiki/Text-Entry-dialog)
 * [list](https://github.com/ncruces/zenity/wiki/List-dialog) (simple)
 * [password](https://github.com/ncruces/zenity/wiki/Password-dialog)
-* [file selection](https://github.com/ncruces/zenity/wiki/File-Selection-dialog)
+* [file selection](https://github.com/ncruces/zenity/wiki/File-selection-dialog)
-* [color selection](https://github.com/ncruces/zenity/wiki/Color-Selection-dialog)
+* [color selection](https://github.com/ncruces/zenity/wiki/Color-selection-dialog)
+* [progress](https://github.com/ncruces/zenity/wiki/Progress-dialog)
 * [notification](https://github.com/ncruces/zenity/wiki/Notification)
 
 Behavior on Windows, macOS and other Unixes might differ slightly.

cmd/zenity/main.go

@@ -34,6 +34,7 @@ var (
 	passwordDlg       bool
 	fileSelectionDlg  bool
 	colorSelectionDlg bool
+	progressDlg       bool
 	notification      bool
 
 	// General options
@@ -73,6 +74,13 @@ var (
 	defaultColor string
 	showPalette  bool
 
+	// Progress options
+	percentage float64
+	pulsate    bool
+	autoClose  bool
+	autoKill   bool
+	noCancel   bool
+
 	// Windows specific options
 	cygpath bool
 	wslpath bool
@@ -95,7 +103,7 @@ func main() {
 	if zenutil.Timeout > 0 {
 		ctx, cancel := context.WithTimeout(context.Background(), time.Duration(zenutil.Timeout)*time.Second)
 		opts = append(opts, zenity.Context(ctx))
-		_ = cancel
+		defer cancel()
 	}
 
 	switch {
@@ -135,12 +143,16 @@ func main() {
 	case colorSelectionDlg:
 		colResult(zenity.SelectColor(opts...))
 
+	case progressDlg:
+		errResult(progress(opts...))
+
 	case notification:
 		errResult(zenity.Notify(text, opts...))
-	}
 
+	default:
 		flag.Usage()
 	}
+}
 
 func setupFlags() {
 	// Application Options
@@ -153,6 +165,7 @@ func setupFlags() {
 	flag.BoolVar(&passwordDlg, "password", false, "Display password dialog")
 	flag.BoolVar(&fileSelectionDlg, "file-selection", false, "Display file selection dialog")
 	flag.BoolVar(&colorSelectionDlg, "color-selection", false, "Display color selection dialog")
+	flag.BoolVar(&progressDlg, "progress", false, "Display progress indication dialog")
 	flag.BoolVar(&notification, "notification", false, "Display notification")
 
 	// General options
@@ -165,12 +178,12 @@ func setupFlags() {
 	flag.StringVar(&text, "text", "", "Set the dialog `text`")
 	flag.StringVar(&icon, "window-icon", "", "Set the window `icon` (error, info, question, warning)")
 	flag.BoolVar(&multiple, "multiple", false, "Allow multiple items to be selected")
+	flag.BoolVar(&defaultCancel, "default-cancel", false, "Give Cancel button focus by default")
 
 	// Message options
 	flag.StringVar(&icon, "icon-name", "", "Set the dialog `icon` (dialog-error, dialog-information, dialog-question, dialog-warning)")
 	flag.BoolVar(&noWrap, "no-wrap", false, "Do not enable text wrapping")
 	flag.BoolVar(&ellipsize, "ellipsize", false, "Enable ellipsizing in the dialog text")
-	flag.BoolVar(&defaultCancel, "default-cancel", false, "Give Cancel button focus by default")
 
 	// Entry options
 	flag.StringVar(&entryText, "entry-text", "", "Set the entry `text`")
@@ -194,6 +207,15 @@ func setupFlags() {
 	flag.StringVar(&defaultColor, "color", "", "Set the `color`")
 	flag.BoolVar(&showPalette, "show-palette", false, "Show the palette")
 
+	// Progress options
+	flag.Float64Var(&percentage, "percentage", 0, "Set initial `percentage`")
+	flag.BoolVar(&pulsate, "pulsate", false, "Pulsate progress bar")
+	flag.BoolVar(&noCancel, "no-cancel", false, "Hide Cancel button (Windows and Unix only)")
+	flag.BoolVar(&autoClose, "auto-close", false, "Dismiss the dialog when 100% has been reached")
+	if runtime.GOOS != "windows" {
+		flag.BoolVar(&autoKill, "auto-kill", false, "Kill parent process if Cancel button is pressed (macOS and Unix only)")
+	}
+
 	// Windows specific options
 	if runtime.GOOS == "windows" {
 		flag.BoolVar(&cygpath, "cygpath", false, "Use cygpath for path translation (Windows only)")
@@ -242,6 +264,9 @@ func validateFlags() {
 	if colorSelectionDlg {
 		n++
 	}
+	if progressDlg {
+		n++
+	}
 	if notification {
 		n++
 	}
@@ -297,6 +322,11 @@ func loadFlags() []zenity.Option {
 		setDefault(&icon, "dialog-password")
 		setDefault(&okLabel, "OK")
 		setDefault(&cancelLabel, "Cancel")
+	case progressDlg:
+		setDefault(&title, "Progress")
+		setDefault(&text, "Running...")
+		setDefault(&okLabel, "OK")
+		setDefault(&cancelLabel, "Cancel")
 	default:
 		setDefault(&text, "")
 	}
@@ -388,6 +418,15 @@ func loadFlags() []zenity.Option {
 		opts = append(opts, zenity.ShowPalette())
 	}
 
+	// Progress options
+
+	if pulsate {
+		opts = append(opts, zenity.Pulsate())
+	}
+	if noCancel {
+		opts = append(opts, zenity.NoCancel())
+	}
+
 	return opts
 }
 

cmd/zenity/progress.go

@@ -0,0 +1,72 @@
+package main
+
+import (
+	"bufio"
+	"math"
+	"os"
+	"strconv"
+	"strings"
+
+	"github.com/ncruces/zenity"
+)
+
+func progress(opts ...zenity.Option) (err error) {
+	dlg, err := zenity.Progress(opts...)
+	if err != nil {
+		return err
+	}
+
+	if autoKill {
+		defer func() {
+			if err == zenity.ErrCanceled {
+				killParent()
+			}
+		}()
+	}
+
+	if err := dlg.Text(text); err != nil {
+		return err
+	}
+	if err := dlg.Value(int(math.Round(percentage))); err != nil {
+		return err
+	}
+
+	lines := make(chan string)
+
+	go func() {
+		defer close(lines)
+		for scanner := bufio.NewScanner(os.Stdin); scanner.Scan(); {
+			lines <- scanner.Text()
+		}
+	}()
+
+	for {
+		select {
+		case line, ok := <-lines:
+			if !ok {
+				break
+			}
+			if len(line) > 1 && line[0] == '#' {
+				if err := dlg.Text(strings.TrimSpace(line[1:])); err != nil {
+					return err
+				}
+			} else if v, err := strconv.ParseFloat(line, 64); err == nil {
+				if err := dlg.Value(int(math.Round(v))); err != nil {
+					return err
+				}
+				if v >= 100 && autoClose {
+					return dlg.Close()
+				}
+			}
+			continue
+		case <-dlg.Done():
+		}
+		break
+	}
+
+	if err := dlg.Complete(); err != nil {
+		return err
+	}
+	<-dlg.Done()
+	return dlg.Close()
+}

cmd/zenity/progress_unix.go

@@ -0,0 +1,12 @@
+// +build !windows,!js
+
+package main
+
+import (
+	"os"
+	"syscall"
+)
+
+func killParent() {
+	syscall.Kill(os.Getppid(), syscall.SIGHUP)
+}

cmd/zenity/progress_windows.go

@@ -0,0 +1,3 @@
+package main
+
+func killParent() {}

color_test.go

@@ -9,6 +9,7 @@ import (
 	"time"
 
 	"github.com/ncruces/zenity"
+	"go.uber.org/goleak"
 )
 
 func ExampleSelectColor() {
@@ -24,18 +25,19 @@ func ExampleSelectColor_palette() {
 	// Output:
 }
 
-func TestSelectColorTimeout(t *testing.T) {
+func TestSelectColor_timeout(t *testing.T) {
+	defer goleak.VerifyNone(t)
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second/10)
+	defer cancel()
 
 	_, err := zenity.SelectColor(zenity.Context(ctx))
 	if !os.IsTimeout(err) {
 		t.Error("did not timeout:", err)
 	}
-
-	cancel()
 }
 
-func TestSelectColorCancel(t *testing.T) {
+func TestSelectColor_cancel(t *testing.T) {
+	defer goleak.VerifyNone(t)
 	ctx, cancel := context.WithCancel(context.Background())
 	cancel()
 

entry_test.go

@@ -8,6 +8,7 @@ import (
 	"time"
 
 	"github.com/ncruces/zenity"
+	"go.uber.org/goleak"
 )
 
 func ExampleEntry() {
@@ -16,18 +17,19 @@ func ExampleEntry() {
 	// Output:
 }
 
-func TestEntryTimeout(t *testing.T) {
+func TestEntry_timeout(t *testing.T) {
+	defer goleak.VerifyNone(t)
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second/10)
+	defer cancel()
 
 	_, err := zenity.Entry("", zenity.Context(ctx))
 	if !os.IsTimeout(err) {
 		t.Error("did not timeout:", err)
 	}
-
-	cancel()
 }
 
-func TestEntryCancel(t *testing.T) {
+func TestEntry_cancel(t *testing.T) {
+	defer goleak.VerifyNone(t)
 	ctx, cancel := context.WithCancel(context.Background())
 	cancel()
 

entry_windows.go

@@ -29,6 +29,7 @@ func entry(text string, opts options) (out string, err error) {
 		sendMessage.Call(editCtl, 0x0030 /* WM_SETFONT */, hfont, 1)
 		sendMessage.Call(okBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
 		sendMessage.Call(cancelBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
+		sendMessage.Call(extraBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
 		setWindowPos.Call(wnd, 0, 0, 0, dpi.Scale(281), dpi.Scale(141), 0x6)                            // SWP_NOZORDER|SWP_NOMOVE
 		setWindowPos.Call(textCtl, 0, dpi.Scale(12), dpi.Scale(10), dpi.Scale(241), dpi.Scale(16), 0x4) // SWP_NOZORDER
 		setWindowPos.Call(editCtl, 0, dpi.Scale(12), dpi.Scale(30), dpi.Scale(241), dpi.Scale(24), 0x4) // SWP_NOZORDER
@@ -36,7 +37,6 @@ func entry(text string, opts options) (out string, err error) {
 			setWindowPos.Call(okBtn, 0, dpi.Scale(95), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4)      // SWP_NOZORDER
 			setWindowPos.Call(cancelBtn, 0, dpi.Scale(178), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
 		} else {
-			sendMessage.Call(extraBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
 			setWindowPos.Call(okBtn, 0, dpi.Scale(12), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4)      // SWP_NOZORDER
 			setWindowPos.Call(extraBtn, 0, dpi.Scale(95), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4)   // SWP_NOZORDER
 			setWindowPos.Call(cancelBtn, 0, dpi.Scale(178), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER

file_test.go

@@ -8,6 +8,7 @@ import (
 	"time"
 
 	"github.com/ncruces/zenity"
+	"go.uber.org/goleak"
 )
 
 const defaultPath = ``
@@ -77,7 +78,7 @@ var fileFuncs = []func(...zenity.Option) (string, error){
 	},
 }
 
-func TestFileTimeout(t *testing.T) {
+func TestFile_timeout(t *testing.T) {
 	for _, f := range fileFuncs {
 		ctx, cancel := context.WithTimeout(context.Background(), time.Second/10)
 
@@ -87,10 +88,12 @@ func TestFileTimeout(t *testing.T) {
 		}
 
 		cancel()
+		goleak.VerifyNone(t)
 	}
 }
 
-func TestFileCancel(t *testing.T) {
+func TestFile_cancel(t *testing.T) {
+	defer goleak.VerifyNone(t)
 	ctx, cancel := context.WithCancel(context.Background())
 	cancel()
 

internal/zenutil/env.go

@@ -0,0 +1,12 @@
+package zenutil
+
+// These are internal.
+const (
+	ErrCanceled    = stringErr("dialog canceled")
+	ErrExtraButton = stringErr("extra button pressed")
+	ErrUnsupported = stringErr("unsupported option")
+)
+
+type stringErr string
+
+func (e stringErr) Error() string { return string(e) }

internal/zenutil/env_darwin.go

@@ -10,5 +10,4 @@ var (
 	Command   bool
 	Timeout   int
 	Separator = "\x00"
-	Canceled  error
 )

internal/zenutil/env_unix.go

@@ -13,5 +13,4 @@ var (
 	Command   bool
 	Timeout   int
 	Separator = "\x1e"
-	Canceled  error
 )

internal/zenutil/env_windows.go

@@ -10,5 +10,4 @@ var (
 	Command   bool
 	Timeout   int
 	Separator string
-	Canceled  error
 )

internal/zenutil/osa_generated.go

@@ -48,16 +48,19 @@ res.join({{json .Separator}})
 var app=Application.currentApplication()
 app.includeStandardAdditions=true
 void app.displayNotification({{json .Text}},{{json .Options}})
-{{- end}}`))
+{{- end}}
-
+{{define "progress" -}}
-var progress = `
 var app=Application.currentApplication()
 app.includeStandardAdditions=true
 app.activate()
 ObjC.import('stdlib')
 ObjC.import('readline')
-try{Progress.totalUnitCount=$.getenv('total')}catch{}
+{{- if .Total}}
-try{Progress.description=$.getenv('description')}catch{}
+Progress.totalUnitCount={{.Total}}
+{{- end}}
+{{- if .Description}}
+Progress.description={{json .Description}}
+{{- end}}
 while(true){var s
 try{s=$.readline('')}catch(e){if(e.errorNumber===-128)$.exit(1)
 break}
@@ -65,4 +68,5 @@ if(s.indexOf('#')===0){Progress.additionalDescription=s.slice(1)
 continue}
 var i=parseInt(s)
 if(i>=0&&Progress.totalUnitCount>0){Progress.completedUnitCount=i
-continue}}`
+continue}}
+{{- end}}`))

internal/zenutil/osa_generator.go

@@ -21,11 +21,6 @@ func main() {
 		log.Fatal(err)
 	}
 
-	var args struct {
-		Templates string
-		Progress  string
-	}
-
 	var str strings.Builder
 
 	for _, file := range files {
@@ -39,25 +34,19 @@ func main() {
 			log.Fatal(err)
 		}
 
-		name = strings.TrimSuffix(name, filepath.Ext(name))
-		if name == "progress" {
-			args.Progress = string(data)
-		} else {
 		str.WriteString("\n" + `{{define "`)
-			str.WriteString(name)
+		str.WriteString(strings.TrimSuffix(name, filepath.Ext(name)))
 		str.WriteString(`" -}}` + "\n")
 		str.Write(data)
 		str.WriteString("\n{{- end}}")
 	}
-	}
 
 	out, err := os.Create("osa_generated.go")
 	if err != nil {
 		log.Fatal(err)
 	}
 
-	args.Templates = str.String()
+	err = generator.Execute(out, str.String())
-	err = generator.Execute(out, args)
 	if err != nil {
 		log.Fatal(err)
 	}
@@ -116,6 +105,4 @@ import (
 var scripts = template.Must(template.New("").Funcs(template.FuncMap{"json": func(v interface{}) (string, error) {
 	b, err := json.Marshal(v)
 	return string(b), err
-}}).Parse(` + "`{{.Templates}}`" + `))
+}}).Parse(` + "`{{.}}`))\n"))
-
-var progress = ` + "`\n{{.Progress}}`\n"))

internal/zenutil/osascripts/progress.gojs

@@ -5,8 +5,12 @@ app.activate()
 ObjC.import('stdlib')
 ObjC.import('readline')
 
-try { Progress.totalUnitCount = $.getenv('total') } catch { }
+{{- if .Total}}
-try { Progress.description = $.getenv('description') } catch { }
+    Progress.totalUnitCount = {{.Total}}
+{{- end}}
+{{- if .Description}}
+    Progress.description = {{json .Description}}
+{{- end}}
 
 while (true) {
     var s

internal/zenutil/progress_unix.go

@@ -3,6 +3,7 @@
 package zenutil
 
 import (
+	"bytes"
 	"context"
 	"io"
 	"os"
@@ -54,13 +55,9 @@ func (d *progressDialog) Done() <-chan struct{} {
 }
 
 func (d *progressDialog) Complete() error {
+	err := d.Value(d.max)
 	close(d.lines)
-	select {
+	return err
-	case <-d.done:
-		return d.err
-	default:
-		return nil
-	}
 }
 
 func (d *progressDialog) Close() error {
@@ -70,7 +67,7 @@ func (d *progressDialog) Close() error {
 	return d.err
 }
 
-func (d *progressDialog) wait() {
+func (d *progressDialog) wait(extra *string, out *bytes.Buffer) {
 	err := d.cmd.Wait()
 	if cerr := d.ctx.Err(); cerr != nil {
 		err = cerr
@@ -80,7 +77,11 @@ func (d *progressDialog) wait() {
 		case eerr.ExitCode() == -1 && atomic.LoadInt32(&d.closed) != 0:
 			err = nil
 		case eerr.ExitCode() == 1:
-			err = Canceled
+			if extra != nil && *extra+"\n" == string(out.Bytes()) {
+				err = ErrExtraButton
+			} else {
+				err = ErrCanceled
+			}
 		}
 	}
 	d.err = err
@@ -103,7 +104,10 @@ func (d *progressDialog) pipe(w io.WriteCloser) {
 			line = s
 		case <-d.ctx.Done():
 			return
+		case <-d.done:
+			return
 		case <-time.After(timeout):
+			// line = ""
 		}
 		if _, err := w.Write([]byte(line + "\n")); err != nil {
 			return

internal/zenutil/run_darwin.go

@@ -7,27 +7,23 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
-	"strings"
 	"syscall"
-	"time"
 )
 
 // Run is internal.
 func Run(ctx context.Context, script string, data interface{}) ([]byte, error) {
-	var buf strings.Builder
+	var buf bytes.Buffer
-
 	err := scripts.ExecuteTemplate(&buf, script, data)
 	if err != nil {
 		return nil, err
 	}
 
-	script = buf.String()
 	if Command {
 		// Try to use syscall.Exec, fallback to exec.Command.
 		if path, err := exec.LookPath("osascript"); err != nil {
 		} else if t, err := ioutil.TempFile("", ""); err != nil {
 		} else if err := os.Remove(t.Name()); err != nil {
-		} else if _, err := t.WriteString(script); err != nil {
+		} else if _, err := t.Write(buf.Bytes()); err != nil {
 		} else if _, err := t.Seek(0, 0); err != nil {
 		} else if err := syscall.Dup2(int(t.Fd()), syscall.Stdin); err != nil {
 		} else if err := os.Stderr.Close(); err != nil {
@@ -38,7 +34,7 @@ func Run(ctx context.Context, script string, data interface{}) ([]byte, error) {
 
 	if ctx != nil {
 		cmd := exec.CommandContext(ctx, "osascript", "-l", "JavaScript")
-		cmd.Stdin = strings.NewReader(script)
+		cmd.Stdin = &buf
 		out, err := cmd.Output()
 		if ctx.Err() != nil {
 			err = ctx.Err()
@@ -46,45 +42,57 @@ func Run(ctx context.Context, script string, data interface{}) ([]byte, error) {
 		return out, err
 	}
 	cmd := exec.Command("osascript", "-l", "JavaScript")
-	cmd.Stdin = strings.NewReader(script)
+	cmd.Stdin = &buf
 	return cmd.Output()
 }
 
 // RunProgress is internal.
-func RunProgress(ctx context.Context, max int, env []string) (*progressDialog, error) {
+func RunProgress(ctx context.Context, max int, data Progress) (dlg *progressDialog, err error) {
+	var buf bytes.Buffer
+	err = scripts.ExecuteTemplate(&buf, "progress", data)
+	if err != nil {
+		return nil, err
+	}
+
 	t, err := ioutil.TempDir("", "")
 	if err != nil {
 		return nil, err
 	}
 	defer func() {
 		if err != nil {
+			if ctx != nil && ctx.Err() != nil {
+				err = ctx.Err()
+			}
 			os.RemoveAll(t)
 		}
 	}()
+	if ctx == nil {
+		ctx = context.Background()
+	}
 
 	var cmd *exec.Cmd
 	name := filepath.Join(t, "progress.app")
 
-	cmd = exec.Command("osacompile", "-l", "JavaScript", "-o", name)
+	cmd = exec.CommandContext(ctx, "osacompile", "-l", "JavaScript", "-o", name)
-	cmd.Stdin = strings.NewReader(progress)
+	cmd.Stdin = &buf
 	if err := cmd.Run(); err != nil {
 		return nil, err
 	}
 
 	plist := filepath.Join(name, "Contents/Info.plist")
 
-	cmd = exec.Command("defaults", "write", plist, "LSUIElement", "true")
+	cmd = exec.CommandContext(ctx, "defaults", "write", plist, "LSUIElement", "true")
 	if err := cmd.Run(); err != nil {
 		return nil, err
 	}
 
-	cmd = exec.Command("defaults", "write", plist, "CFBundleName", "")
+	cmd = exec.CommandContext(ctx, "defaults", "write", plist, "CFBundleName", "")
 	if err := cmd.Run(); err != nil {
 		return nil, err
 	}
 
 	var executable string
-	cmd = exec.Command("defaults", "read", plist, "CFBundleExecutable")
+	cmd = exec.CommandContext(ctx, "defaults", "read", plist, "CFBundleExecutable")
 	if out, err := cmd.Output(); err != nil {
 		return nil, err
 	} else {
@@ -92,8 +100,7 @@ func RunProgress(ctx context.Context, max int, env []string) (*progressDialog, e
 		executable = filepath.Join(name, "Contents/MacOS", string(out))
 	}
 
-	cmd = exec.Command(executable)
+	cmd = exec.CommandContext(ctx, executable)
-	cmd.Env = env
 	pipe, err := cmd.StdinPipe()
 	if err != nil {
 		return nil, err
@@ -101,11 +108,9 @@ func RunProgress(ctx context.Context, max int, env []string) (*progressDialog, e
 	if err := cmd.Start(); err != nil {
 		return nil, err
 	}
-	if ctx == nil {
-		ctx = context.Background()
-	}
 
-	dlg := &progressDialog{
+	dlg = &progressDialog{
+		ctx:   ctx,
 		cmd:   cmd,
 		max:   max,
 		lines: make(chan string),
@@ -114,7 +119,7 @@ func RunProgress(ctx context.Context, max int, env []string) (*progressDialog, e
 	go dlg.pipe(pipe)
 	go func() {
 		defer os.RemoveAll(t)
-		dlg.wait()
+		dlg.wait(nil, nil)
 	}()
 	return dlg, nil
 }
@@ -185,7 +190,6 @@ type File struct {
 	Options   FileOptions
 }
 
-// FileOptions is internal.
 type FileOptions struct {
 	Prompt     *string  `json:"withPrompt,omitempty"`
 	Type       []string `json:"ofType,omitempty"`
@@ -206,3 +210,9 @@ type NotifyOptions struct {
 	Title    *string `json:"withTitle,omitempty"`
 	Subtitle string  `json:"subtitle,omitempty"`
 }
+
+// Progress is internal.
+type Progress struct {
+	Description *string
+	Total       *int
+}

internal/zenutil/run_unix.go

@@ -3,6 +3,7 @@
 package zenutil
 
 import (
+	"bytes"
 	"context"
 	"os"
 	"os/exec"
@@ -42,25 +43,30 @@ func Run(ctx context.Context, args []string) ([]byte, error) {
 }
 
 // RunProgress is internal.
-func RunProgress(ctx context.Context, max int, args []string) (*progressDialog, error) {
+func RunProgress(ctx context.Context, max int, extra *string, args []string) (*progressDialog, error) {
 	if Command && path != "" {
 		if Timeout > 0 {
 			args = append(args, "--timeout", strconv.Itoa(Timeout))
 		}
 		syscall.Exec(path, append([]string{tool}, args...), os.Environ())
 	}
+	if ctx == nil {
+		ctx = context.Background()
+	}
 
-	cmd := exec.Command(tool, args...)
+	cmd := exec.CommandContext(ctx, tool, args...)
 	pipe, err := cmd.StdinPipe()
 	if err != nil {
 		return nil, err
 	}
+	var out *bytes.Buffer
+	if extra != nil {
+		out = &bytes.Buffer{}
+		cmd.Stdout = out
+	}
 	if err := cmd.Start(); err != nil {
 		return nil, err
 	}
-	if ctx == nil {
-		ctx = context.Background()
-	}
 
 	dlg := &progressDialog{
 		ctx:     ctx,
@@ -71,6 +77,6 @@ func RunProgress(ctx context.Context, max int, args []string) (*progressDialog,
 		done:    make(chan struct{}),
 	}
 	go dlg.pipe(pipe)
-	go dlg.wait()
+	go dlg.wait(extra, out)
 	return dlg, nil
 }

list_darwin.go

@@ -5,6 +5,10 @@ import (
 )
 
 func list(text string, items []string, opts options) (string, error) {
+	if opts.extraButton != nil {
+		return "", ErrUnsupported
+	}
+
 	var data zenutil.List
 	data.Items = items
 	data.Options.Prompt = &text
@@ -19,6 +23,10 @@ func list(text string, items []string, opts options) (string, error) {
 }
 
 func listMultiple(text string, items []string, opts options) ([]string, error) {
+	if opts.extraButton != nil {
+		return nil, ErrUnsupported
+	}
+
 	var data zenutil.List
 	data.Items = items
 	data.Options.Prompt = &text

list_test.go

@@ -8,6 +8,7 @@ import (
 	"time"
 
 	"github.com/ncruces/zenity"
+	"go.uber.org/goleak"
 )
 
 func ExampleList() {
@@ -44,18 +45,19 @@ func ExampleListMultipleItems() {
 	// Output:
 }
 
-func TestListTimeout(t *testing.T) {
+func TestList_timeout(t *testing.T) {
+	defer goleak.VerifyNone(t)
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second/10)
+	defer cancel()
 
 	_, err := zenity.List("", nil, zenity.Context(ctx))
 	if !os.IsTimeout(err) {
 		t.Error("did not timeout:", err)
 	}
-
-	cancel()
 }
 
-func TestListCancel(t *testing.T) {
+func TestList_cancel(t *testing.T) {
+	defer goleak.VerifyNone(t)
 	ctx, cancel := context.WithCancel(context.Background())
 	cancel()
 

list_windows.go

@@ -42,6 +42,7 @@ func listDlg(text string, items []string, multiple bool, opts options) (out []st
 		sendMessage.Call(listCtl, 0x0030 /* WM_SETFONT */, hfont, 1)
 		sendMessage.Call(okBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
 		sendMessage.Call(cancelBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
+		sendMessage.Call(extraBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
 		setWindowPos.Call(wnd, 0, 0, 0, dpi.Scale(281), dpi.Scale(281), 0x6)                             // SWP_NOZORDER|SWP_NOMOVE
 		setWindowPos.Call(textCtl, 0, dpi.Scale(12), dpi.Scale(10), dpi.Scale(241), dpi.Scale(16), 0x4)  // SWP_NOZORDER
 		setWindowPos.Call(listCtl, 0, dpi.Scale(12), dpi.Scale(30), dpi.Scale(241), dpi.Scale(164), 0x4) // SWP_NOZORDER
@@ -49,7 +50,6 @@ func listDlg(text string, items []string, multiple bool, opts options) (out []st
 			setWindowPos.Call(okBtn, 0, dpi.Scale(95), dpi.Scale(206), dpi.Scale(75), dpi.Scale(24), 0x4)      // SWP_NOZORDER
 			setWindowPos.Call(cancelBtn, 0, dpi.Scale(178), dpi.Scale(206), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
 		} else {
-			sendMessage.Call(extraBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
 			setWindowPos.Call(okBtn, 0, dpi.Scale(12), dpi.Scale(206), dpi.Scale(75), dpi.Scale(24), 0x4)      // SWP_NOZORDER
 			setWindowPos.Call(extraBtn, 0, dpi.Scale(95), dpi.Scale(206), dpi.Scale(75), dpi.Scale(24), 0x4)   // SWP_NOZORDER
 			setWindowPos.Call(cancelBtn, 0, dpi.Scale(178), dpi.Scale(206), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER

msg_test.go

@@ -8,6 +8,7 @@ import (
 	"time"
 
 	"github.com/ncruces/zenity"
+	"go.uber.org/goleak"
 )
 
 func ExampleError() {
@@ -45,7 +46,7 @@ var msgFuncs = []func(string, ...zenity.Option) error{
 	zenity.Question,
 }
 
-func TestMessageTimeout(t *testing.T) {
+func TestMessage_timeout(t *testing.T) {
 	for _, f := range msgFuncs {
 		ctx, cancel := context.WithTimeout(context.Background(), time.Second/10)
 
@@ -55,10 +56,12 @@ func TestMessageTimeout(t *testing.T) {
 		}
 
 		cancel()
+		goleak.VerifyNone(t)
 	}
 }
 
-func TestMessageCancel(t *testing.T) {
+func TestMessage_cancel(t *testing.T) {
+	defer goleak.VerifyNone(t)
 	ctx, cancel := context.WithCancel(context.Background())
 	cancel()
 

notify_test.go

@@ -6,6 +6,7 @@ import (
 	"testing"
 
 	"github.com/ncruces/zenity"
+	"go.uber.org/goleak"
 )
 
 func ExampleNotify() {
@@ -15,7 +16,8 @@ func ExampleNotify() {
 	// Output:
 }
 
-func TestNotifyCancel(t *testing.T) {
+func TestNotify_cancel(t *testing.T) {
+	defer goleak.VerifyNone(t)
 	ctx, cancel := context.WithCancel(context.Background())
 	cancel()
 

progress.go

@@ -29,7 +29,7 @@ type ProgressDialog interface {
 	Done() <-chan struct{}
 }
 
-// MaxValue returns an Option to set the maximum value (macOS only).
+// MaxValue returns an Option to set the maximum value (Windows and macOS only).
 // The default maximum value is 100.
 func MaxValue(value int) Option {
 	return funcOption(func(o *options) { o.maxValue = value })
@@ -40,7 +40,7 @@ func Pulsate() Option {
 	return funcOption(func(o *options) { o.maxValue = -1 })
 }
 
-// NoCancel returns an Option to hide the Cancel button (Unix only).
+// NoCancel returns an Option to hide the Cancel button (Windows and Unix only).
 func NoCancel() Option {
 	return funcOption(func(o *options) { o.noCancel = true })
 }

progress_darwin.go

@@ -1,21 +1,22 @@
 package zenity
 
 import (
-	"strconv"
-
 	"github.com/ncruces/zenity/internal/zenutil"
 )
 
 func progress(opts options) (ProgressDialog, error) {
-	var env []string
+	if opts.extraButton != nil {
-	if opts.title != nil {
+		return nil, ErrUnsupported
-		env = append(env, "description="+*opts.title)
 	}
+
+	var data zenutil.Progress
+	data.Description = opts.title
 	if opts.maxValue == 0 {
 		opts.maxValue = 100
 	}
 	if opts.maxValue >= 0 {
-		env = append(env, "total="+strconv.Itoa(opts.maxValue))
+		data.Total = &opts.maxValue
 	}
-	return zenutil.RunProgress(opts.ctx, opts.maxValue, env)
+
+	return zenutil.RunProgress(opts.ctx, opts.maxValue, data)
 }

progress_test.go

@@ -0,0 +1,100 @@
+package zenity_test
+
+import (
+	"context"
+	"errors"
+	"log"
+	"testing"
+	"time"
+
+	"github.com/ncruces/zenity"
+	"go.uber.org/goleak"
+)
+
+func ExampleProgress() {
+	dlg, err := zenity.Progress(
+		zenity.Title("Update System Logs"))
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer dlg.Close()
+
+	dlg.Text("Scanning mail logs...")
+	dlg.Value(0)
+	time.Sleep(time.Second)
+
+	dlg.Value(25)
+	time.Sleep(time.Second)
+
+	dlg.Text("Updating mail logs...")
+	dlg.Value(50)
+	time.Sleep(time.Second)
+
+	dlg.Text("Resetting cron jobs...")
+	dlg.Value(75)
+	time.Sleep(time.Second)
+
+	dlg.Text("Rebooting system...")
+	dlg.Value(100)
+	time.Sleep(time.Second)
+
+	dlg.Complete()
+	time.Sleep(time.Second)
+
+	// Output:
+}
+
+func ExampleProgress_pulsate() {
+	dlg, err := zenity.Progress(
+		zenity.Title("Update System Logs"),
+		zenity.Pulsate())
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer dlg.Close()
+
+	dlg.Text("Scanning mail logs...")
+	time.Sleep(time.Second)
+
+	dlg.Text("Updating mail logs...")
+	time.Sleep(time.Second)
+
+	dlg.Text("Resetting cron jobs...")
+	time.Sleep(time.Second)
+
+	dlg.Text("Rebooting system...")
+	time.Sleep(time.Second)
+
+	dlg.Complete()
+	time.Sleep(time.Second)
+
+	// Output:
+}
+
+func TestProgress_cancel(t *testing.T) {
+	defer goleak.VerifyNone(t)
+	ctx, cancel := context.WithCancel(context.Background())
+	cancel()
+
+	_, err := zenity.Progress(zenity.Context(ctx))
+	if !errors.Is(err, context.Canceled) {
+		t.Error("was not canceled:", err)
+	}
+}
+
+func TestProgress_cancelAfter(t *testing.T) {
+	defer goleak.VerifyNone(t)
+	ctx, cancel := context.WithCancel(context.Background())
+
+	dlg, err := zenity.Progress(zenity.Context(ctx))
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	go cancel()
+	<-dlg.Done()
+	err = dlg.Close()
+	if !errors.Is(err, context.Canceled) {
+		t.Error("was not canceled:", err)
+	}
+}

progress_unix.go

@@ -24,5 +24,5 @@ func progress(opts options) (ProgressDialog, error) {
 	if opts.timeRemaining {
 		args = append(args, "--time-remaining")
 	}
-	return zenutil.RunProgress(opts.ctx, opts.maxValue, args)
+	return zenutil.RunProgress(opts.ctx, opts.maxValue, opts.extraButton, args)
 }

progress_windows.go

@@ -48,25 +48,31 @@ func progressDlg(opts options, dlg *progressDialog) (err error) {
 	defer font.Delete()
 	defWindowProc := defWindowProc.Addr()
 
-	var wnd, textCtl, progCtl uintptr
-	var okBtn, cancelBtn, extraBtn uintptr
-
 	layout := func(dpi dpi) {
 		hfont := font.ForDPI(dpi)
-		sendMessage.Call(textCtl, 0x0030 /* WM_SETFONT */, hfont, 1)
+		sendMessage.Call(dlg.textCtl, 0x0030 /* WM_SETFONT */, hfont, 1)
-		sendMessage.Call(okBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
+		sendMessage.Call(dlg.okBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
-		sendMessage.Call(cancelBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
+		sendMessage.Call(dlg.cancelBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
-		setWindowPos.Call(wnd, 0, 0, 0, dpi.Scale(281), dpi.Scale(141), 0x6)                            // SWP_NOZORDER|SWP_NOMOVE
+		sendMessage.Call(dlg.extraBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
-		setWindowPos.Call(textCtl, 0, dpi.Scale(12), dpi.Scale(10), dpi.Scale(241), dpi.Scale(16), 0x4) // SWP_NOZORDER
+		setWindowPos.Call(dlg.wnd, 0, 0, 0, dpi.Scale(281), dpi.Scale(141), 0x6)                            // SWP_NOZORDER|SWP_NOMOVE
-		setWindowPos.Call(progCtl, 0, dpi.Scale(12), dpi.Scale(30), dpi.Scale(241), dpi.Scale(24), 0x4) // SWP_NOZORDER
+		setWindowPos.Call(dlg.textCtl, 0, dpi.Scale(12), dpi.Scale(10), dpi.Scale(241), dpi.Scale(16), 0x4) // SWP_NOZORDER
-		if extraBtn == 0 {
+		setWindowPos.Call(dlg.progCtl, 0, dpi.Scale(12), dpi.Scale(30), dpi.Scale(241), dpi.Scale(24), 0x4) // SWP_NOZORDER
-			setWindowPos.Call(okBtn, 0, dpi.Scale(95), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4)      // SWP_NOZORDER
+		if dlg.extraBtn == 0 {
-			setWindowPos.Call(cancelBtn, 0, dpi.Scale(178), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
+			if dlg.cancelBtn == 0 {
+				setWindowPos.Call(dlg.okBtn, 0, dpi.Scale(178), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
 			} else {
-			sendMessage.Call(extraBtn, 0x0030 /* WM_SETFONT */, hfont, 1)
+				setWindowPos.Call(dlg.okBtn, 0, dpi.Scale(95), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4)      // SWP_NOZORDER
-			setWindowPos.Call(okBtn, 0, dpi.Scale(12), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4)      // SWP_NOZORDER
+				setWindowPos.Call(dlg.cancelBtn, 0, dpi.Scale(178), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
-			setWindowPos.Call(extraBtn, 0, dpi.Scale(95), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4)   // SWP_NOZORDER
+			}
-			setWindowPos.Call(cancelBtn, 0, dpi.Scale(178), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
+		} else {
+			if dlg.cancelBtn == 0 {
+				setWindowPos.Call(dlg.okBtn, 0, dpi.Scale(95), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4)     // SWP_NOZORDER
+				setWindowPos.Call(dlg.extraBtn, 0, dpi.Scale(178), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
+			} else {
+				setWindowPos.Call(dlg.okBtn, 0, dpi.Scale(12), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4)      // SWP_NOZORDER
+				setWindowPos.Call(dlg.extraBtn, 0, dpi.Scale(95), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4)   // SWP_NOZORDER
+				setWindowPos.Call(dlg.cancelBtn, 0, dpi.Scale(178), dpi.Scale(66), dpi.Scale(75), dpi.Scale(24), 0x4) // SWP_NOZORDER
+			}
 		}
 	}
 
@@ -118,54 +124,52 @@ func progressDlg(opts options, dlg *progressDialog) (err error) {
 	}
 	defer unregisterClass.Call(cls, instance)
 
-	wnd, _, _ = createWindowEx.Call(0x10101, // WS_EX_CONTROLPARENT|WS_EX_WINDOWEDGE|WS_EX_DLGMODALFRAME
+	dlg.wnd, _, _ = createWindowEx.Call(0x10101, // WS_EX_CONTROLPARENT|WS_EX_WINDOWEDGE|WS_EX_DLGMODALFRAME
 		cls, strptr(*opts.title),
 		0x84c80000, // WS_POPUPWINDOW|WS_CLIPSIBLINGS|WS_DLGFRAME
 		0x80000000, // CW_USEDEFAULT
 		0x80000000, // CW_USEDEFAULT
 		281, 141, 0, 0, instance, 0)
 
-	textCtl, _, _ = createWindowEx.Call(0,
+	dlg.textCtl, _, _ = createWindowEx.Call(0,
 		strptr("STATIC"), 0,
 		0x5002e080, // WS_CHILD|WS_VISIBLE|WS_GROUP|SS_WORDELLIPSIS|SS_EDITCONTROL|SS_NOPREFIX
-		12, 10, 241, 16, wnd, 0, instance, 0)
+		12, 10, 241, 16, dlg.wnd, 0, instance, 0)
 
 	var flags uintptr = 0x50000001 // WS_CHILD|WS_VISIBLE|PBS_SMOOTH
 	if opts.maxValue < 0 {
 		flags |= 0x8 // PBS_MARQUEE
 	}
-	progCtl, _, _ = createWindowEx.Call(0,
+	dlg.progCtl, _, _ = createWindowEx.Call(0,
 		strptr("msctls_progress32"), // PROGRESS_CLASS
 		0, flags,
-		12, 30, 241, 24, wnd, 0, instance, 0)
+		12, 30, 241, 24, dlg.wnd, 0, instance, 0)
 
-	okBtn, _, _ = createWindowEx.Call(0,
+	dlg.okBtn, _, _ = createWindowEx.Call(0,
 		strptr("BUTTON"), strptr(*opts.okLabel),
 		0x58030001, // WS_CHILD|WS_VISIBLE|WS_DISABLED|WS_GROUP|WS_TABSTOP|BS_DEFPUSHBUTTON
-		12, 66, 75, 24, wnd, 1 /* IDOK */, instance, 0)
+		12, 66, 75, 24, dlg.wnd, 1 /* IDOK */, instance, 0)
-	cancelBtn, _, _ = createWindowEx.Call(0,
+	if !opts.noCancel {
+		dlg.cancelBtn, _, _ = createWindowEx.Call(0,
 			strptr("BUTTON"), strptr(*opts.cancelLabel),
 			0x50010000, // WS_CHILD|WS_VISIBLE|WS_GROUP|WS_TABSTOP
-		12, 66, 75, 24, wnd, 2 /* IDCANCEL */, instance, 0)
+			12, 66, 75, 24, dlg.wnd, 2 /* IDCANCEL */, instance, 0)
+	}
 	if opts.extraButton != nil {
-		extraBtn, _, _ = createWindowEx.Call(0,
+		dlg.extraBtn, _, _ = createWindowEx.Call(0,
 			strptr("BUTTON"), strptr(*opts.extraButton),
 			0x50010000, // WS_CHILD|WS_VISIBLE|WS_GROUP|WS_TABSTOP
-			12, 66, 75, 24, wnd, 7 /* IDNO */, instance, 0)
+			12, 66, 75, 24, dlg.wnd, 7 /* IDNO */, instance, 0)
 	}
 
-	layout(getDPI(wnd))
+	layout(getDPI(dlg.wnd))
-	centerWindow(wnd)
+	centerWindow(dlg.wnd)
-	showWindow.Call(wnd, 1 /* SW_SHOWNORMAL */, 0)
+	showWindow.Call(dlg.wnd, 1 /* SW_SHOWNORMAL */, 0)
 	if opts.maxValue < 0 {
-		sendMessage.Call(progCtl, 0x40a /* PBM_SETMARQUEE */, 1, 0)
+		sendMessage.Call(dlg.progCtl, 0x40a /* PBM_SETMARQUEE */, 1, 0)
 	} else {
-		sendMessage.Call(progCtl, 0x406 /* PBM_SETRANGE32 */, 0, uintptr(opts.maxValue))
+		sendMessage.Call(dlg.progCtl, 0x406 /* PBM_SETRANGE32 */, 0, uintptr(opts.maxValue))
 	}
-	dlg.prog = progCtl
-	dlg.text = textCtl
-	dlg.ok = okBtn
-	dlg.wnd = wnd
 	dlg.init.Done()
 
 	if opts.ctx != nil {
@@ -174,7 +178,7 @@ func progressDlg(opts options, dlg *progressDialog) (err error) {
 		go func() {
 			select {
 			case <-opts.ctx.Done():
-				sendMessage.Call(wnd, 0x0112 /* WM_SYSCOMMAND */, 0xf060 /* SC_CLOSE */, 0)
+				sendMessage.Call(dlg.wnd, 0x0112 /* WM_SYSCOMMAND */, 0xf060 /* SC_CLOSE */, 0)
 			case <-wait:
 			}
 		}()
@@ -183,7 +187,7 @@ func progressDlg(opts options, dlg *progressDialog) (err error) {
 	// set default values
 	err = nil
 
-	if err := messageLoop(wnd); err != nil {
+	if err := messageLoop(dlg.wnd); err != nil {
 		return err
 	}
 	if opts.ctx != nil && opts.ctx.Err() != nil {
@@ -193,26 +197,22 @@ func progressDlg(opts options, dlg *progressDialog) (err error) {
 }
 
 type progressDialog struct {
-	err  error
+	max       int
 	done      chan struct{}
 	init      sync.WaitGroup
-	prog uintptr
-	text uintptr
 	wnd       uintptr
-	ok   uintptr
+	textCtl   uintptr
-	max  int
+	progCtl   uintptr
-}
+	okBtn     uintptr
-
+	cancelBtn uintptr
-func (d *progressDialog) Close() error {
+	extraBtn  uintptr
-	sendMessage.Call(d.wnd, 0x0112 /* WM_SYSCOMMAND */, 0xf060 /* SC_CLOSE */, 0)
+	err       error
-	<-d.done
-	return d.err
 }
 
 func (d *progressDialog) Text(text string) error {
 	select {
 	default:
-		setWindowText.Call(d.text, strptr(text))
+		setWindowText.Call(d.textCtl, strptr(text))
 		return nil
 	case <-d.done:
 		return d.err
@@ -222,9 +222,9 @@ func (d *progressDialog) Text(text string) error {
 func (d *progressDialog) Value(value int) error {
 	select {
 	default:
-		sendMessage.Call(d.prog, 0x402 /* PBM_SETPOS */, uintptr(value), 0)
+		sendMessage.Call(d.progCtl, 0x402 /* PBM_SETPOS */, uintptr(value), 0)
 		if value >= d.max {
-			enableWindow.Call(d.ok, 1)
+			enableWindow.Call(d.okBtn, 1)
 		}
 		return nil
 	case <-d.done:
@@ -239,3 +239,23 @@ func (d *progressDialog) MaxValue() int {
 func (d *progressDialog) Done() <-chan struct{} {
 	return d.done
 }
+
+func (d *progressDialog) Complete() error {
+	select {
+	default:
+		setWindowLong.Call(d.progCtl, intptr(-16) /* GWL_STYLE */, 0x50000001 /* WS_CHILD|WS_VISIBLE|PBS_SMOOTH */)
+		sendMessage.Call(d.progCtl, 0x406 /* PBM_SETRANGE32 */, 0, 1)
+		sendMessage.Call(d.progCtl, 0x402 /* PBM_SETPOS */, 1, 0)
+		enableWindow.Call(d.okBtn, 1)
+		enableWindow.Call(d.cancelBtn, 0)
+		return nil
+	case <-d.done:
+		return d.err
+	}
+}
+
+func (d *progressDialog) Close() error {
+	sendMessage.Call(d.wnd, 0x0112 /* WM_SYSCOMMAND */, 0xf060 /* SC_CLOSE */, 0)
+	<-d.done
+	return d.err
+}

pwd_test.go

@@ -8,6 +8,7 @@ import (
 	"time"
 
 	"github.com/ncruces/zenity"
+	"go.uber.org/goleak"
 )
 
 func ExamplePassword() {
@@ -15,18 +16,19 @@ func ExamplePassword() {
 	// Output:
 }
 
-func TestPasswordTimeout(t *testing.T) {
+func TestPassword_timeout(t *testing.T) {
+	defer goleak.VerifyNone(t)
 	ctx, cancel := context.WithTimeout(context.Background(), time.Second/10)
+	defer cancel()
 
 	_, _, err := zenity.Password(zenity.Context(ctx))
 	if !os.IsTimeout(err) {
 		t.Error("did not timeout:", err)
 	}
-
-	cancel()
 }
 
-func TestPasswordCancel(t *testing.T) {
+func TestPassword_cancel(t *testing.T) {
+	defer goleak.VerifyNone(t)
 	ctx, cancel := context.WithCancel(context.Background())
 	cancel()
 

util_unix.go

@@ -3,7 +3,6 @@
 package zenity
 
 import (
-	"bytes"
 	"os/exec"
 	"strconv"
 	"strings"
@@ -56,9 +55,8 @@ func appendIcon(args []string, opts options) []string {
 }
 
 func strResult(opts options, out []byte, err error) (string, error) {
-	out = bytes.TrimSuffix(out, []byte{'\n'})
 	if err, ok := err.(*exec.ExitError); ok && err.ExitCode() == 1 {
-		if opts.extraButton != nil && *opts.extraButton == string(out) {
+		if opts.extraButton != nil && *opts.extraButton+"\n" == string(out) {
 			return "", ErrExtraButton
 		}
 		return "", ErrCanceled

util_windows.go

@@ -66,6 +66,7 @@ var (
 	systemParametersInfo         = user32.NewProc("SystemParametersInfoW")
 	setWindowPos                 = user32.NewProc("SetWindowPos")
 	getWindowRect                = user32.NewProc("GetWindowRect")
+	setWindowLong                = user32.NewProc("SetWindowLongPtrW")
 	getSystemMetrics             = user32.NewProc("GetSystemMetrics")
 	unregisterClass              = user32.NewProc("UnregisterClassW")
 	registerClassEx              = user32.NewProc("RegisterClassExW")

zenity.go

@@ -17,25 +17,17 @@ import (
 	"github.com/ncruces/zenity/internal/zenutil"
 )
 
-type stringErr string
-
-func (e stringErr) Error() string { return string(e) }
-
 func stringPtr(s string) *string { return &s }
 
 // ErrCanceled is returned when the cancel button is pressed,
 // or window functions are used to close the dialog.
-const ErrCanceled = stringErr("dialog canceled")
+const ErrCanceled = zenutil.ErrCanceled
 
 // ErrExtraButton is returned when the extra button is pressed.
-const ErrExtraButton = stringErr("extra button pressed")
+const ErrExtraButton = zenutil.ErrExtraButton
 
 // ErrUnsupported is returned when a combination of options is not supported.
-const ErrUnsupported = stringErr("unsupported option")
+const ErrUnsupported = zenutil.ErrUnsupported
-
-func init() {
-	zenutil.Canceled = ErrCanceled
-}
 
 type options struct {
 	// General options