diff --git a/resources/desktop-picker.ps1 b/resources/desktop-picker.ps1
index 953096a..7046c2e 100644
--- a/resources/desktop-picker.ps1
+++ b/resources/desktop-picker.ps1
@@ -1,20 +1,21 @@
 param([string]$Mode = "element")
 $ErrorActionPreference = "Continue";
+[Console]::OutputEncoding = [System.Text.Encoding]::UTF8;
 $logPath = "D:/RPA/test-output/desktop-picker.log";
 function Write-PickLog([string]$msg) {
-  try { Add-Content -Path $logPath -Value ((Get-Date -Format "HH:mm:ss.fff") + " | " + $msg) -Encoding UTF8 } catch {}
+  try { $logDirectory = Split-Path -Parent $logPath; if (-not (Test-Path -LiteralPath $logDirectory)) { New-Item -ItemType Directory -Path $logDirectory -Force | Out-Null }; Add-Content -Path $logPath -Value ((Get-Date -Format "HH:mm:ss.fff") + " | " + $msg) -Encoding UTF8 } catch {}
 }
 Write-PickLog ("=== start Mode=$Mode ===")
 Add-Type -AssemblyName UIAutomationClient, UIAutomationTypes, WindowsBase
 Add-Type -AssemblyName System.Windows.Forms
 Write-PickLog "assemblies ok"
-Add-Type -MemberDefinition '[DllImport("user32.dll")] public static extern short GetAsyncKeyState(int key); [DllImport("user32.dll", CharSet = CharSet.Unicode)] public static extern int GetWindowTextW(IntPtr h, System.Text.StringBuilder sb, int max);' -Name PickW32 -Namespace RpaPick | Out-Null
+Add-Type -MemberDefinition '[DllImport("user32.dll")] public static extern short GetAsyncKeyState(int key); [DllImport("user32.dll", CharSet = CharSet.Unicode)] public static extern int GetWindowTextW(IntPtr h, System.Text.StringBuilder sb, int max); [DllImport("user32.dll")] public static extern int GetWindowLong(IntPtr hWnd, int nIndex); [DllImport("user32.dll")] public static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);' -Name PickW32 -Namespace RpaPick | Out-Null
 Write-PickLog "w32 ok"
 if ($Mode -eq "windows") {
   $wins = @()
   foreach ($p in Get-Process) { if ($p.MainWindowHandle -ne [IntPtr]::Zero -and $p.MainWindowTitle) { $wins += @{ title = $p.MainWindowTitle; process = $p.ProcessName } } }
-  Write-PickLog "windows: $($_wins.Count)"
-  Write-Output (ConvertTo-Json $wins -Compress -AsArray)
+  Write-PickLog "windows: $($wins.Count)"
+  Write-Output (ConvertTo-Json @($wins) -Compress)
   exit 0
 }
 $info = New-Object System.Windows.Forms.Form
@@ -41,10 +42,23 @@ $hl.ShowInTaskbar = $false
 $hl.StartPosition = [System.Windows.Forms.FormStartPosition]::Manual
 $hl.BackColor = [System.Drawing.Color]::Red
 $hl.Opacity = 0.35
+function Set-ClickThrough($form) {
+  if ($form.IsHandleCreated) {
+    $GWL_EXSTYLE = -20
+    $WS_EX_LAYERED = 0x80000
+    $WS_EX_TRANSPARENT = 0x20
+    $WS_EX_NOACTIVATE = 0x08000000
+    $WS_EX_TOOLWINDOW = 0x80
+    $style = [RpaPick.PickW32]::GetWindowLong($form.Handle, $GWL_EXSTYLE)
+    [void][RpaPick.PickW32]::SetWindowLong($form.Handle, $GWL_EXSTYLE, $style -bor $WS_EX_LAYERED -bor $WS_EX_TRANSPARENT -bor $WS_EX_NOACTIVATE -bor $WS_EX_TOOLWINDOW)
+  }
+}
+
 function Set-HighlightBox([int]$x, [int]$y, [int]$w, [int]$h) {
   $hl.Location = New-Object System.Drawing.Point(($x - 2), ($y - 2))
   $hl.Size = New-Object System.Drawing.Size(($w + 4), ($h + 4))
   $hl.Show()
+  Set-ClickThrough $hl
 }
 function Hide-Highlight { $hl.Hide() }
 function Get-DeepestAtPoint([double]$px, [double]$py) {
@@ -70,6 +84,7 @@ function Get-DeepestAtPoint([double]$px, [double]$py) {
   return $cur
 }
 $info.Show()
+Set-ClickThrough $info
 $stage = "hover"
 $chain = New-Object System.Collections.ArrayList
 $selIdx = -1
@@ -91,7 +106,7 @@ while ($true) {
       if ($el) {
         $c = $el.Current
         $ctrlName = $c.ControlType.ProgrammaticName.Replace("ControlType.", "")
-        Set-HighlightBox ([int]$c.Current.BoundingRectangle.X) ([int]$c.Current.BoundingRectangle.Y) ([int]$c.Current.BoundingRectangle.Width) ([int]$c.Current.BoundingRectangle.Height)
+        $r = $c.BoundingRectangle; Set-HighlightBox ([int]$r.X) ([int]$r.Y) ([int]$r.Width) ([int]$r.Height)
         $infoLabel.Text = "名称: " + $c.Name + "   类型: " + $ctrlName + "   [空格]锁定   [Esc]取消"
       } else { Hide-Highlight }
       if ($space -and -not $prevSpace -and $el) {
@@ -103,7 +118,7 @@ while ($true) {
         while ($cur -and -not $cur.Equals([System.Windows.Automation.AutomationElement]::RootElement)) {
           $c = $cur.Current
           $r = $c.BoundingRectangle
-          [void]$chain.Insert(0, @{ el = $cur; name = [string]$c.Name; automationId = [string]$c.AutomationId; controlType = $c.ControlType.ProgrammaticName.Replace("ControlType.", ""); x = [int]$r.X; y = [int]$r.Y; w = [int]$r.Width; h = [int]$r.Height })
+          [void]$chain.Insert(0, @{ el = $cur; name = [string]$c.Name; automationId = [string]$c.AutomationId; controlType = $c.ControlType.ProgrammaticName.Replace("ControlType.", ""); x = [int]$r.X; y = [int]$r.Y; w = [int]$r.Width; h = [int]$r.Height; topLevel = $walker.GetParent($cur).Equals([System.Windows.Automation.AutomationElement]::RootElement) })
           $cur = $walker.GetParent($cur)
         }
         $selIdx = $chain.Count - 1
@@ -121,8 +136,8 @@ while ($true) {
       if ($pgDn -and -not $prevPgDn -and $selIdx -lt ($chain.Count - 1)) { $selIdx += 1 }
       if ($space -and -not $prevSpace) {
         $item = $chain[$selIdx]
-        $rootTitle = ""
-        foreach ($it in $chain) { if ($it.name) { $rootTitle = $it.name; break } }
+        $rootItem = $chain | Where-Object { $_.topLevel -and $_.name } | Select-Object -First 1
+        if ($rootItem) { $rootTitle = $rootItem.name } else { foreach ($it in $chain) { if ($it.name) { $rootTitle = $it.name; break } } }
         $result = @{ selected = $selIdx; window = $rootTitle; name = $item.name; automationId = $item.automationId; controlType = $item.controlType; x = $item.x; y = $item.y; w = $item.w; h = $item.h }
         break
       }
@@ -131,8 +146,11 @@ while ($true) {
     Write-PickLog ("LOOP ERR: " + $_.Exception.Message)
   }
   [System.Windows.Forms.Application]::DoEvents()
+  $prevSpace = $space
+  $prevPgUp = $pgUp
+  $prevPgDn = $pgDn
   Start-Sleep -Milliseconds 60
 }
 $info.Close()
 $hl.Close()
-if ($result) { Write-Output (ConvertTo-Json $result -Compress) } else { Write-Output (ConvertTo-Json @{ cancelled = $true } -Compress) }
\ No newline at end of file
+if ($result) { Write-Output (ConvertTo-Json $result -Compress) } else { Write-Output (ConvertTo-Json @{ cancelled = $true } -Compress) }
diff --git a/src/main/desktop-pick.ts b/src/main/desktop-pick.ts
index 89f9bcc..beb6f1e 100644
--- a/src/main/desktop-pick.ts
+++ b/src/main/desktop-pick.ts
@@ -30,19 +30,24 @@ export interface DesktopPickResult {
 export async function pickDesktopElement(): Promise<DesktopPickResult> {
   const appWindows = BrowserWindow.getAllWindows().filter(w => !w.isDestroyed() && w.isVisible());
   for (const w of appWindows) w.minimize();
-  const { stdout } = await run("powershell.exe", ["-NoProfile", "-STA", "-ExecutionPolicy", "Bypass", "-File", pickerScriptPath()], { timeout: 180000, windowsHide: false, maxBuffer: 4 * 1024 * 1024 });
-  const jsonLine = stdout.trim().split(/\r?\n/).reverse().find(l => l.trim().startsWith("{"));
-  if (!jsonLine) throw new RuntimeError("picker_failed", "拾取未返回结果");
-  const parsed = JSON.parse(jsonLine) as Omit<DesktopPickResult, "selector">;
-  if (parsed.cancelled) return { ...parsed, selector: "" };
-  const parts: string[] = [];
-  if (parsed.window) parts.push("window=" + parsed.window);
-  if (parsed.name) parts.push("name=" + parsed.name);
-  if (parsed.controlType) parts.push("type=" + parsed.controlType);
-  if (parsed.automationId) parts.push("id=" + parsed.automationId);
-  return { ...parsed, selector: parts.join(";") };
+  try {
+    const { stdout } = await run("powershell.exe", ["-NoProfile", "-STA", "-ExecutionPolicy", "Bypass", "-File", pickerScriptPath()], { timeout: 180000, windowsHide: true, maxBuffer: 4 * 1024 * 1024 });
+    const jsonLine = stdout.trim().split(/\r?\n/).reverse().find(l => l.trim().startsWith("{"));
+    if (!jsonLine) throw new RuntimeError("picker_failed", "拾取未返回结果");
+    const parsed = JSON.parse(jsonLine) as Omit<DesktopPickResult, "selector">;
+    if (parsed.cancelled) return { ...parsed, selector: "" };
+    const parts: string[] = [];
+    if (parsed.window) parts.push("window=" + parsed.window);
+    if (parsed.name) parts.push("name=" + parsed.name);
+    if (parsed.controlType) parts.push("type=" + parsed.controlType);
+    if (parsed.automationId) parts.push("id=" + parsed.automationId);
+    return { ...parsed, selector: parts.join(";") };
+  } finally {
+    for (const w of appWindows) {
+      if (!w.isDestroyed()) w.restore();
+    }
+  }
 }
-
 export async function listVisibleWindows(): Promise<Array<{ title: string; process: string }>> {
   const { stdout } = await run("powershell.exe", ["-NoProfile", "-ExecutionPolicy", "Bypass", "-File", pickerScriptPath(), "-Mode", "windows"], { timeout: 30000, windowsHide: true, maxBuffer: 4 * 1024 * 1024 });
   const jsonLine = stdout.trim().split(/\r?\n/).reverse().find(l => l.trim().startsWith("["));