如何在PowerShell中使用GetWindowText API函数？

Question

如何在PowerShell中使用GetWindowText API函数？

我试过这样的方式:

    Add-Type @"
  using System;
  using System.Runtime.InteropServices;
  public class UserWindowss {
    [DllImport("user32.dll")]
    public static extern IntPtr GetWindowText(IntPtr hWnd, System.Text.StringBuilder text, int count);
}
"@

我做这样的字符串生成器:

$stringbuilder = New-Object System.Text.StringBuilder
$stringbuilder.Capacity =256

我使用的功能如下:

$WindowTitless = $ImportDll::GetWindowText($TopWindow, $stringbuilder, 256)

但是我得到了错误:

ERROR: test: Failed to get active Window details. More Info: Exception calling "GetWindowText" with "3" argument(s): "Unable to find an entry point named
ERROR: 'GetWindowText' in DLL 'user32.dll'."

有人可以帮我使用这个功能吗？如果你能请代码.TNX.

Answer 1

大致这个:

Add-Type @"
  using System;
  using System.Runtime.InteropServices;
  public class UserWindows {
    [DllImport("user32.dll")]
    public static extern IntPtr GetWindowText(IntPtr hWnd, System.Text.StringBuilder text, int count);
}
"@

$stringbuilder = New-Object System.Text.StringBuilder 256

Get-Process | ForEach-Object {

    $count = [UserWindows]::GetWindowText($_.MainWindowHandle, $stringbuilder, 256)

    if (0 -lt $count) {
        "$($_.ProcessName) $($stringbuilder.ToString())"
    }

}

您没有说明$ImportDll代码中的位置,但您需要将它们作为您定义的类的静态方法调用.

我的密切投票中的链接中有更完整的例子.

帮助链接(如果有):

• Add-Type (在模块Microsoft.PowerShell.Utility中)
• New-Object (在模块Microsoft.PowerShell.Utility中)
• Get-Process (在模块Microsoft.PowerShell.Management中)
• ForEach-Object