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using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Shapes; using System.Runtime.InteropServices; using System.Windows.Interop; namespace MMDesktop { /// <summary> /// Interaction logic for Window1.xaml /// </summary> public partial class Window1 : Window { const UInt32 SWP_NOSIZE = 0x0001; const UInt32 SWP_NOMOVE = 0x0002; const UInt32 SWP_NOACTIVATE = 0x0010; const UInt32 SWP_NOZORDER = 0x0004; const int WM_ACTIVATEAPP = 0x001C; const int WM_ACTIVATE = 0x0006; const int WM_SETFOCUS = 0x0007; static readonly IntPtr HWND_BOTTOM = new IntPtr(1); const int WM_WINDOWPOSCHANGING = 0x0046; [DllImport("user32.dll")] static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags); [DllImport("user32.dll")] static extern IntPtr DeferWindowPos(IntPtr hWinPosInfo, IntPtr hWnd, IntPtr hWndInsertAfter, int x, int y, int cx, int cy, uint uFlags); [DllImport("user32.dll")] static extern IntPtr BeginDeferWindowPos(int nNumWindows); [DllImport("user32.dll")] static extern bool EndDeferWindowPos(IntPtr hWinPosInfo); public Window1() { InitializeComponent(); } private void Window_Loaded(object sender, RoutedEventArgs e) { IntPtr hWnd = new WindowInteropHelper(this).Handle; SetWindowPos(hWnd, HWND_BOTTOM, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE); IntPtr windowHandle = (new WindowInteropHelper(this)).Handle; HwndSource src = HwndSource.FromHwnd(windowHandle); src.AddHook(new HwndSourceHook(WndProc)); } private IntPtr WndProc(IntPtr hWnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled) { if (msg == WM_SETFOCUS) { IntPtr hWnd2 = new WindowInteropHelper(this).Handle; SetWindowPos(hWnd2, HWND_BOTTOM, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE); handled = true; } return IntPtr.Zero; } private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e) { IntPtr windowHandle = (new WindowInteropHelper(this)).Handle; HwndSource src = HwndSource.FromHwnd(windowHandle); src.RemoveHook(new HwndSourceHook(this.WndProc)); } } }
UI:
<Window x:Class="MMDesktop.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300" Width="300" Closing="Window_Closing" Loaded="Window_Loaded" > <Grid></Grid> </Window>
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