脚本完成时如何防止关闭 out-gridview
Posted
技术标签:
【中文标题】脚本完成时如何防止关闭 out-gridview【英文标题】:How to prevent from closing out-gridview when a script finishes 【发布时间】:2011-01-07 01:28:38 【问题描述】:我有一个使用out-gridview
显示结果的脚本。这是一个简单的例子:
"hello world" | out-gridview
当我使用 Run with PowerShell 运行脚本时,它会打开 gridview 并在打开后立即关闭它。 (我认为这是因为 gridview 不是模态的,脚本完成了。)
如何让PowerShell等到gridview手动关闭?
【问题讨论】:
【参考方案1】:怎么样:
"hello world" | out-gridview -wait
根据the documentation of Out-GridView
,选项-Wait
会阻止Windows PowerShell 关闭,直到Out-GridView 窗口关闭。
它在 Windows PowerShell 3.0 中可用。
【讨论】:
【参考方案2】:只需将-PassThru
添加到 Out-Gridview - 将“确定”和“取消”按钮添加到 gridview - 现在您可以“使用 powershell 运行”并在完成后使用 OK 按钮关闭 gridview 窗口 -太简单了!
【讨论】:
这仅在 PowerShell 3.0 之后可用,它还引入了-Wait
。【参考方案3】:
您可以使用-noexit
运行 Powershell.exe 或试试这个:
"hello world" | out-gridview
Read-Host "press enter to exit"
更新:
Out-GridView 是非阻塞的,所以如果你想测试它是否退出,你必须求助于一些低级别的 Win32 API。以下代码在 ISE 中有效(尚未在控制台主机中对其进行测试)。它也有一个限制——它基本上会寻找与主机进程关联的任何窗口,而不是主机进程的主窗口。到那时,它会返回。事实证明 Out-GridView 不是主窗口的子窗口,并且其标题不一致(GPS | Out-GridView 或 GPS | ogv 或 GPS | <any alias you make up>
):
$src = @'
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Threading;
namespace Utils
public delegate bool Win32Callback(IntPtr hwnd, IntPtr lParam);
public class WindowHelper
private const int PROCESS_QUERY_LIMITED_INFORMATION = 0x1000;
private IntPtr _mainHwnd;
private IntPtr _ogvHwnd;
private IntPtr _poshProcessHandle;
private int _poshPid;
private bool _ogvWindowFound;
public WindowHelper()
Process process = Process.GetCurrentProcess();
_mainHwnd = process.MainWindowHandle;
_poshProcessHandle = process.Handle;
_poshPid = process.Id;
public void WaitForOutGridViewWindowToClose()
do
_ogvWindowFound = false;
EnumChildWindows(IntPtr.Zero, EnumChildWindowsHandler,
IntPtr.Zero);
Thread.Sleep(500);
while (_ogvWindowFound);
[DllImport("User32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool EnumChildWindows(
IntPtr parentHandle, Win32Callback callback, IntPtr lParam);
[DllImport("Oleacc.dll")]
public static extern IntPtr GetProcessHandleFromHwnd(IntPtr hwnd);
[DllImport("Kernel32.dll")]
public static extern int GetProcessId(IntPtr handle);
[DllImport("Kernel32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool DuplicateHandle(
IntPtr hSourceProcessHandle,
IntPtr hSourceHandle,
IntPtr hTargetProcessHandle,
out IntPtr lpTargetHandle,
int dwDesiredAccess,
bool bInheritHandle,
int dwOptions);
[DllImport("Kernel32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool CloseHandle(IntPtr handle);
[DllImport("Kernel32.dll")]
public static extern int GetLastError();
private bool EnumChildWindowsHandler(IntPtr hwnd, IntPtr lParam)
if (_ogvHwnd == IntPtr.Zero)
IntPtr hProcess = GetProcessHandleFromHwnd(hwnd);
IntPtr hProcessDup;
if (!DuplicateHandle(hProcess, hProcess, _poshProcessHandle,
out hProcessDup,
PROCESS_QUERY_LIMITED_INFORMATION,
false, 0))
Console.WriteLine("Dup process handle 0:X8 error: 1",
hProcess.ToInt32(), GetLastError());
return true;
int processId = GetProcessId(hProcessDup);
if (processId == 0)
Console.WriteLine("GetProcessId error:0",
GetLastError());
return true;
if (processId == _poshPid)
if (hwnd != _mainHwnd)
_ogvHwnd = hwnd;
_ogvWindowFound = true;
CloseHandle(hProcessDup);
return false;
CloseHandle(hProcessDup);
else if (hwnd == _ogvHwnd)
_ogvWindowFound = true;
return false;
return true;
'@
Add-Type -TypeDefinition $src
Get-Process | Out-GridView
$helper = new-object Utils.WindowHelper
$helper.WaitForOutGridViewWindowToClose()
"Done!!!!"
【讨论】:
任何更复杂的解决方案可以找到打开的窗口并等待它们关闭? 我修复了最初发布 C# 源代码时出现的两个问题,随后将其格式化以适应不需要滚动条。 不会使用 -title 指定 GridView 窗口的标题来简化查找过程吗?【参考方案4】:由于某种原因,Keith 的解决方案对我不起作用。当我运行它时,我得到了错误,并且该过程终止而无需等待网格关闭。我得到这样的输出:
...
GetProcessId error:6
Dup process handle 0000015C error: 6
GetProcessId error:6
GetProcessId error:6
Dup process handle 00000148 error: 6
GetProcessId error:6
GetProcessId error:6
...
我不太了解 Keith 的解决方案中使用的 Windows API。但是经过一番挖掘,我确实找到了一种修改更简单的解决方案的方法。它涉及更少的 API 调用和导入,也不会产生任何错误。这就是我想出的。
$src = @'
using System;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Threading;
namespace Utils
public delegate bool Win32Callback(IntPtr hwnd, IntPtr lParam);
public class WindowHelper
private const int PROCESS_QUERY_LIMITED_INFORMATION = 0x1000;
private IntPtr _mainHwnd;
private IntPtr _ogvHwnd;
private IntPtr _poshProcessHandle;
private int _poshPid;
private bool _ogvWindowFound;
public WindowHelper()
Process process = Process.GetCurrentProcess();
_mainHwnd = process.MainWindowHandle;
_poshProcessHandle = process.Handle;
_poshPid = process.Id;
public void WaitForOutGridViewWindowToClose()
do
_ogvWindowFound = false;
EnumChildWindows(IntPtr.Zero, EnumChildWindowsHandler,
IntPtr.Zero);
Thread.Sleep(500);
while (_ogvWindowFound);
[DllImport("User32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool EnumChildWindows(
IntPtr parentHandle, Win32Callback callback, IntPtr lParam);
[DllImport("User32.dll")]
public static extern int GetWindowThreadProcessId(IntPtr hWnd, out int processId);
[DllImport("Kernel32.dll")]
public static extern int GetLastError();
private bool EnumChildWindowsHandler(IntPtr hwnd, IntPtr lParam)
if (_ogvHwnd == IntPtr.Zero)
int processId;
int thread = GetWindowThreadProcessId(hwnd, out processId);
if (processId == 0)
Console.WriteLine("GetWindowThreadProcessId error:0",
GetLastError());
return true;
if (processId == _poshPid)
if (hwnd != _mainHwnd)
_ogvHwnd = hwnd;
_ogvWindowFound = true;
return false;
else if (hwnd == _ogvHwnd)
_ogvWindowFound = true;
return false;
return true;
'@
Add-Type -TypeDefinition $src
Get-Process | Out-GridView
$helper = new-object Utils.WindowHelper
$helper.WaitForOutGridViewWindowToClose()
希望这可以帮助其他人摆脱与我相同的问题。
【讨论】:
【参考方案5】:这将使窗口保持打开状态:
$DataResults | Out-GridView -Title $Title -PassThru | clip
这允许您显示带有标题的对象列表(例如),当您单击“确定”时,它会将数据保存到剪贴板。
【讨论】:
以上是关于脚本完成时如何防止关闭 out-gridview的主要内容,如果未能解决你的问题,请参考以下文章
单击背景时如何防止laravel jetstream模式关闭?