如何使用PowerShell将焦点设置到输入框？

Question

我正在使用以下PowerShell 2.0代码从vb输入框中获取输入:

[void][System.Reflection.Assembly]::LoadWithPartialName('Microsoft.VisualBasic')
$name = [Microsoft.VisualBasic.Interaction]::InputBox("What is your name?", "Name", "bob")

有时当我运行它时,输入框出现在活动窗口后面.有没有办法让输入框最顶端？或者一个简单的方法来获得它的手柄,只需使用setforegroundwindow？

谢谢!!

Answer 1

考虑到InputBox调用是模态的,我不确定如何轻松地执行此操作,因此您无法轻松地尝试查找窗口句柄并在该窗口上执行set-foreground(除非您尝试使用后台作业).而不是使用这个VisualBasic文本输入框,如何使用WPF/XAML"滚动自己的"实现.它非常简单,但它确实需要WPF,必要时由PowerShell 2.0安装.

$Xaml = @'
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        x:Name="Window"
        Title="Name" Height="137" Width="444" MinHeight="137" MinWidth="100"
        FocusManager.FocusedElement="{Binding ElementName=TextBox}"
        ResizeMode="CanResizeWithGrip" >
    <DockPanel Margin="8">
        <StackPanel DockPanel.Dock="Bottom" 
                    Orientation="Horizontal" HorizontalAlignment="Right">
            <Button x:Name="OKButton" Width="60" IsDefault="True" 
                    Margin="12,12,0,0" TabIndex="1" >_OK</Button>
            <Button Width="60" IsCancel="True" Margin="12,12,0,0" 
                    TabIndex="2" >_Close</Button>
        </StackPanel>
        <StackPanel >
            <Label x:Name="Label" Margin="-5,0,0,0" TabIndex="3">Label:</Label>
            <TextBox x:Name="TextBox" TabIndex="0" />
        </StackPanel>
    </DockPanel>
</Window>
'@

if ([System.Threading.Thread]::CurrentThread.ApartmentState -ne 'STA')
{
    throw "Script can only be run if PowerShell is started with -STA switch."
}

Add-Type -Assembly PresentationCore,PresentationFrameWork

$xmlReader = [System.Xml.XmlReader]::Create([System.IO.StringReader] $Xaml)
$form = [System.Windows.Markup.XamlReader]::Load($xmlReader)
$xmlReader.Close()

$window = $form.FindName("Window")
$window.Title = "My App Name"

$label = $form.FindName("Label")
$label.Content = "What is your name?"

$textbox = $form.FindName("TextBox")

$okButton = $form.FindName("OKButton")
$okButton.add_Click({$window.DialogResult = $true})

if ($form.ShowDialog())
{
    $textbox.Text
}

这可以很容易地包含在Read-GuiText函数中.