我正在创建一个带有按钮的小的PowerShellGUI来快速运行各种PowerShellGUI命令。我已经得到了我想要的总体布局，但是现在我正在尝试通过使用按钮构建函数来简化我的代码。
我在一个单独的函数中设置各种各样的traits，比如“Button.Text”，“Button.SetToolTip”，或者“Button.Add_Click”，没有问题，但是我在一个独立的函数中设置“Button.Add_MouseEnter”和“Button.Add_MouseLeave”方面有问题。代码编译得很好，但是当我在GUI中将鼠标悬停在按钮上时，我得到了以下错误（第8-10行有类似的错误）
“在此对象上找不到属性”BackColor“。请验证该属性是否存在并且可以设置。位于第7行char：30 $tButton.Add_MouseEnter（{$tButton.BackColor = '#990000'}）类别信息：无效操作：（：）[]，运行时异常完全限定错误ID：属性未找到”
我试着在函数中完全创建按钮对象并返回按钮，这将正确设置所有按钮特性，但当鼠标经过时仍然会给出相同的错误。我想我可能需要以不同的方式将按钮对象传递给函数/返回按钮（取决于第一码或第二码），但我不知道。我想也许可以用[CmdletBinding]绑定参数（）]但错误仍然出现（我可能不太理解这一点）如有任何见解，将不胜感激
=====初始代码=====
'

[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Drawing")

Clear-Host

function Set-Hover ($tButton){
    $tButton.Add_MouseEnter({$tButton.BackColor = '#990000'})
    $tButton.Add_MouseEnter({$tButton.ForeColor = '#000000'})
    $tButton.Add_MouseLeave({$tButton.BackColor = '#000000'})
    $tButton.Add_MouseLeave({$tButton.ForeColor = '#FFFFFF'})
}

$Window = New-Object System.Windows.Forms.Form
$Window.ClientSize = New-Object System.Drawing.Size(100, 50)

$Global:Button = New-Object 'system.Windows.Forms.Button'
$Button.Size = New-Object System.Drawing.Point(75,40)
$Button.Location = New-Object System.Drawing.Point(5, 5)
$Button.text = "Button"
$Button.BackColor = '#000000'
$Button.ForeColor = '#FFFFFF'

Set-Hover -tButton $Button

$Window.Controls.Add($Button)

<# The code works when the Mouse_Enter/Leave lines are here, not in a function
$Button.Add_MouseEnter({$Button.BackColor = '#990000'})
$Button.Add_MouseEnter({$Button.ForeColor = '#000000'})
$Button.Add_MouseLeave({$Button.BackColor = '#000000'})
$Button.Add_MouseLeave({$Button.ForeColor = '#FFFFFF'})
#>

$Window.ShowDialog()

'=====第二个代码=====

[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Drawing")

Clear-Host

function Set-Hover {
    $tButton = New-Object 'system.Windows.Forms.Button'
    $tButton.Size = New-Object System.Drawing.Point(75,40)
    $tButton.Location = New-Object System.Drawing.Point(5, 5)
    $tButton.text = "Text"
    $tButton.BackColor = '#FFFFFF'
    $tButton.ForeColor = '#000000'
    $tButton.Add_MouseEnter({$tButton.BackColor = '#990000'})
    $tButton.Add_MouseEnter({$tButton.ForeColor = '#000000'})
    $tButton.Add_MouseLeave({$tButton.BackColor = '#000000'})
    $tButton.Add_MouseLeave({$tButton.ForeColor = '#FFFFFF'})

    $tButton
}

$Window = New-Object System.Windows.Forms.Form
$Window.ClientSize = New-Object System.Drawing.Size(100, 50)

$Button1 = Set-Hover

$Window.Controls.Add($Button1)

<# The code works when the Mouse_Enter/Leave lines are here, not in a function
$Button.Add_MouseEnter({$Button.BackColor = '#990000'})
$Button.Add_MouseEnter({$Button.ForeColor = '#000000'})
$Button.Add_MouseLeave({$Button.BackColor = '#000000'})
$Button.Add_MouseLeave({$Button.ForeColor = '#FFFFFF'})
#>

$Window.ShowDialog()