How to simulate Keyboard Events in Code in not active window?

Question

How to simulate Keyboard Events in Code in not active window?

How to use SendWait() without SetForegroundWindow()?

SendWait example: http://msdn.microsoft.com/en-us/library/ms171548.aspx

Answer 1

See this thread. Basically given some handle to a window, you need to use p/invoke and call PostMessage with the WM_KEYDOWN message:

private const int VK_RETURN = 0x0D;
private const uint WM_KEYDOWN = 0x0100;

[DllImport("user32.dll", SetLastError = true)]
private static extern bool PostMessage(IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);    

public void SendKeysToWindow(IntPtr hWnd)
{
    PostMessage(hWnd, WM_KEYDOWN, new IntPtr(VK_RETURN), IntPtr.Zero);
}

Here's the list of Virtual Keys.