private static extern int SHSetInputContext(IntPtr hwnd, SHIC_FEATURE dwFeature, ref bool lpValue);
private static extern int SHSetInputContext(IntPtr hwnd, SHIC_FEATURE dwFeature, ref bool lpValue);
private static extern int SHSetInputContext(IntPtr hwnd, SHIC_FEATURE dwFeature, ref bool lpValue);
private static extern int SHSetInputContext(IntPtr hwnd, SHIC_FEATURE dwFeature, ref bool lpValue);