wpf 在windows Alt+Tab 任务视图中隐藏定义为工具软件

最新推荐文章于 2020-12-06 04:12:03 发布

jones.s

最新推荐文章于 2020-12-06 04:12:03 发布

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分类专栏：客户端知识文章标签： WPF 全局热键

本文链接：https://blog.youkuaiyun.com/weixin_48572603/article/details/107342774

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本文介绍了一种在Windows系统中使用Alt+Tab任务视图时隐藏特定应用程序的方法，通过调用user32.dll和kernel32.dll中的API函数实现窗口的隐藏，适用于希望在多任务切换时不显示某些工具软件的场景。

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    #region 在windows Alt+Tab 任务视图中隐藏 定义为工具软件


    [DllImport("user32.dll")]
    public static extern IntPtr GetWindowLong(IntPtr hWnd, int nIndex);

    public static IntPtr SetWindowLong(IntPtr hWnd, int nIndex, IntPtr dwNewLong)
    {
        int error = 0;
        IntPtr result = IntPtr.Zero;
        // Win32 SetWindowLong doesn't clear error on success
        SetLastError(0);

        if (IntPtr.Size == 4)
        {
            // use SetWindowLong
            Int32 tempResult = IntSetWindowLong(hWnd, nIndex, IntPtrToInt32(dwNewLong));
            error = Marshal.GetLastWin32Error();
            result = new IntPtr(tempResult);
        }
        else
        {
            // use SetWindowLongPtr
            result = IntSetWindowLongPtr(hWnd, nIndex, dwNewLong);
            error = Marshal.GetLastWin32Error();
        }

        if ((result == IntPtr.Zero) && (error != 0))
        {
            throw new System.ComponentModel.Win32Exception(error);
        }

        return result;
    }

    [DllImport("user32.dll", EntryPoint = "SetWindowLongPtr", SetLastError = true)]
    private static extern IntPtr IntSetWindowLongPtr(IntPtr hWnd, int nIndex, IntPtr dwNewLong);

    [DllImport("user32.dll", EntryPoint = "SetWindowLong", SetLastError = true)]
    private static extern Int32 IntSetWindowLong(IntPtr hWnd, int nIndex, Int32 dwNewLong);

    private static int IntPtrToInt32(IntPtr intPtr)
    {
        return unchecked((int)intPtr.ToInt64());
    }
    [DllImport("kernel32.dll", EntryPoint = "SetLastError")]
    public static extern void SetLastError(int dwErrorCode);


    #endregion
    private void HideAltTab()
    {
        var windowInterop = new System.Windows.Interop.WindowInteropHelper(this);
        var exStyle = GetWindowLong(windowInterop.Handle, -20);

        SetWindowLong(windowInterop.Handle, (-20), new IntPtr(0x80));
    }