How Can I Create Bottom-Most Windows in WPF?

Creating Bottom-Most Windows in WPF

In the Windows desktop environment, the ability to position a window "on desktop" or "on bottom" offers flexibility in window management. The Rainlendar application leverages this feature through its "On Desktop" option.

Implementing "On Desktop" in WPF

While Rainlendar's implementation relies on the Win32 API, WPF introduces alternative approaches:

1. Using the SetParent Method:
   To mimic Rainlendar's "On Desktop" behavior, the SetParent method can be utilized to make a WPF window a child of the Explorer desktop window, similar to how SetParent works in the Win32 context.
2. Z-Ordering and Event Handling:
   Alternatively, the WPF application can achieve the "On Bottom" behavior by manipulating the Z-ordering and handling events. By initially setting the window to the bottom of the Z-order (e.g., using SetWindowPos) and responding to the WM_WINDOWPOSCHANGING message, the application can maintain the bottom-most position even when the window is clicked.

By employing one of these techniques, WPF applications can create windows that exhibit the desired bottom-most behavior, providing a convenient and efficient way to manage window placement on the desktop.

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