This PowerShell script creates and displays a simple GUI window...

This PowerShell script creates and displays a simple GUI window using WinUI features provided by the WinUIShell namespace. Here’s what each part of the code does:

1. Import-Module WinUIShell

   • The script imports the WinUIShell module to access features like Window, AppWindow, and Button.

2. using namespace WinUIShell

   • This command lets the script reference types from the WinUIShell namespace directly without needing to fully qualify them.

3. $win = [Window]::new()

   • Creates a new instance of a Window object ($win), representing the main application window.

4. $win.Title = 'Hello from PowerShell!'

   • Sets the title of the window to 'Hello from PowerShell!'.

5. $win.AppWindow.ResizeClient(400, 200)

   • Resizes the client area of the window to a width of 400 pixels and a height of 200 pixels.

6. $button = [Button]::new()

   • Creates a new button control and stores it in the $button variable.

7. $button.Content = 'Click Me'

   • Sets the initial text label of the button to 'Click Me'.

8. $button.HorizontalAlignment = 'Center'

   • Horizontally aligns the button to the center of the window.

9. $button.VerticalAlignment = 'Center'

   • Vertically aligns the button to the center of the window.

10. $button.AddClick({ $button.Content = 'Clicked!' })

    • Attaches a click event handler to the button. When the button is clicked, the handler changes the button’s text content to 'Clicked!'.

11. $win.Content = $button

    • Sets the button as the content of the window, effectively adding it as the main (and only) UI element in the window.

12. $win.Activate()

    • Displays the window on the screen. This method shows the window without blocking the continuation of the script.

13. $win.WaitForClosed()

    • Waits for the window to close. When the window is closed, the script will terminate or proceed past this line.

Output or Behavior:

• A window titled "Hello from PowerShell!" appears with a single button in the center labeled "Click Me".
• When the button is clicked, its label text changes to "Clicked!".
• The script waits until the user closes the window.

This demonstrates creating a basic graphical user interface (GUI) application in PowerShell using the WinUIShell module.