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POHow to restore a window without giving it focus using WPF (or interop)
 

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  1. POHow to restore a window without giving it focus using WPF (or interop)
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    <p>I need to <strong>restore</strong> ("un-minimize") a WPF window that has already been created but the window that's currently on top (not necessarily WPF) <strong>can't lose focus or activation</strong>. I have tried using all WIN32 functions I can find, to no avail. Getting really frustrated by now, would really appreciate any pointers and tips.</p> <p>Obviously just changing to <code>WindowState.Normal</code> in WPF doesn't cut it as this makes the window receive focus and activation as-well. I have also tried all sorts of combinations with setting <code>Hidden</code> and <code>IsEnabled</code> while restoring.</p> <p>I have tried WIN32 <code>SetWindowPos</code> with HWND_TOP, HWND_TOPMOST etc. but this function is not intended to restore windows and will only change position of already "displayed" windows.</p> <p>Tried WIN32 <code>ShowWindow</code> and <code>SetWindowPlacement</code> but no luck there either. Tried a desperate attempt at adding a HwndHook to try and listen for <code>WM_SETFOCUS</code> and restoring focus to the original window but i only get zero for the last focused window handle..</p> <p><strong>Edit - Solution with window extension after tip from Joel Lucsy:</strong></p> <pre><code>public static class RestoreWindowNoActivateExtension { [DllImport("user32.dll")] [return: MarshalAs(UnmanagedType.Bool)] static extern bool ShowWindow(IntPtr hWnd, UInt32 nCmdShow); private const int SW_SHOWNOACTIVATE = 4; public static void RestoreNoActivate(this Window win) { WindowInteropHelper winHelper = new WindowInteropHelper(win); ShowWindow(winHelper.Handle, SW_SHOWNOACTIVATE); } } </code></pre>
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    1. COCan you post your current code please?
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    2. COI could post code if you really feel it's needed but since it's just a mess of attempts using different calls it's not really much to look at. Will post something if i do get it to work however..
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