Detect if on-screen keyboard is open (TabTip.exe)

Question

I am working on a WPF/C# application for completing forms. I am trying to find a way to determine if the TapTip keyboard (TabTip.exe / metro-like keyboard for windows 8 desk

Answer 1

This totally works!

//
// BOOL IsVirtualKeyboardVisible()
//
// Returns TRUE if Virtual Keyboard/Input Pane is visible
// Returns FALSE if Virtual Keyboard/Input Pane is not visible

__declspec(dllexport) BOOL __cdecl IsVirtualKeyboardVisible()
{
    BOOL    bRet = FALSE;
    RECT    InputPaneScreenLocation = { 0, 0, 0, 0 };

    __try
    {
        HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);

        IFrameworkInputPane *IinputPane = NULL;

        if (SUCCEEDED(hr))
        {
            //
            // http://msdn.microsoft.com/en-us/library/windows/desktop/hh706967(v=vs.85).aspx
            //
            hr = CoCreateInstance(__uuidof(FrameworkInputPane), 0, CLSCTX_ALL, __uuidof(IFrameworkInputPane), (LPVOID*)&IinputPane);
            IinputPane->Location(&InputPaneScreenLocation);

            if (InputPaneScreenLocation.bottom == 0 && InputPaneScreenLocation.left == 0 &&
                InputPaneScreenLocation.right == 0 && InputPaneScreenLocation.top == 0)
            {
                // VKB is not visible
                bRet = FALSE;
            }
            else
            {
                // VKB is visible
                bRet = TRUE;
            } 
        }

    }   // try
    __finally
    {
        CoUninitialize();
    }

    return bRet;
}