如何更改 TabPage 上文本的颜色？

Question

需要应用哪些属性来改变Tabpage上文字的前景色和背景色？

看图： https://imgur.com/a/Su8aSg7

这是我的代码：

$TabControl_Main = New-Object System.Windows.Forms.TabControl
$TabControl_Main.Location = New-Object System.Drawing.Size(20,550)
$TabControl_Main.Size =  New-Object System.Drawing.Size(850,270)
$form_MainForm.Controls.Add($TabControl_Main)

$TabPage1 = New-Object System.Windows.Forms.TabPage
$TabPage1.Location = New-Object System.Drawing.Size(20,550)
$TabPage1.Size =  New-Object System.Drawing.Size(850,270)
$TabPage1.Text = "Processes"       
$TabControl_Main.Controls.Add($TabPage1)

Answer 1

您必须创建一个事件并绘制该区域。这是一些代码based on this example in c#, credits @Fun Mun Pieng。

# assign a color for each tab
$PageColor  = @{0 = "lightgreen";
                1 = "yellow";
                2 = "lightblue"}

# define the event
$tabControl_Drawing = {
    param([object]$Sender, [System.EventArgs]$e)

    $Background = new-object Drawing.SolidBrush $PageColor[$e.Index]
    $Foreground = new-object Drawing.SolidBrush black

    $tabGraphics = $e.Graphics
    $tabBounds = $e.Bounds
    $tabGraphics.FillRectangle($Background,$tabBounds)
    $tabTextSize = $tabGraphics.MeasureString($sender.TabPages[$e.Index].text, $e.Font)

    $tabGraphics.DrawString($Sender.TabPages[$e.Index].Text,$e.Font,$Foreground,$tabBounds.Left + ($tabBounds.Width - $tabTextSize.Width) / 2,$tabBounds.Top + ($tabBounds.Height -$tabTextSize.Height) / 2 +1)
    $e.DrawFocusRectangle()
}
# add the event
$TabControl_Main.add_DrawItem($tabControl_Drawing)

比较好用的是HotTrack:

$TabControl_Main.HotTrack = $true

当您使用 powershell 而不是 powershell ISE 执行脚本时，您将看到效果。

BackColor 什么都不做。用 MSDN 的话来说：

BackColor > This member is not meaningful for this control.

编辑：添加代码。