Send Win API paste cmd from background C# app

These additional links helped lead me to the answer:

• How to get active child window
• How can I find the active child window?

Here's what's working for me:

private void SendCtrlV()
{
    IntPtr hWnd = GetFocusedHandle();
    PostMessage(hWnd, WM_PASTE, IntPtr.Zero, IntPtr.Zero);
}

static IntPtr GetFocusedHandle()
{
    var info = new GuiThreadInfo();
    info.cbSize = Marshal.SizeOf(info);
    if (!GetGUIThreadInfo(0, ref info))
        throw new Win32Exception();
    return info.hwndFocus;
}