/// <summary>
/// Creates a COM object and returns the transparent proxy
/// which intercepts all calls to the object
/// </summary>
/// <param name="type">Interface which defines the method and properties to intercept</param>
/// <returns>Transparent proxy to the real proxy for the object</returns>
/// <remarks>
/// The <paramref name="type"/> must be an interface decorated with
/// the <see cref="ComProgIdAttribute"/> attribute.
/// </remarks>
public static object CreateInstance(Type type)
{
if (type == null)
{
throw new ArgumentNullException("type");
}
if (!type.IsInterface)
{
throw new ArgumentException("The specified type must be an interface.", "type");
}
ComProgIdAttribute progID = ComProgIdAttribute.GetAttribute(type);
if (progID == null || String.IsNullOrEmpty(progID.Value))
{
throw new ArgumentException("The specified type must define a ComProgId attribute.", "type");
}
Type comType = Type.GetTypeFromProgID(progID.Value, true);
object comObject = Activator.CreateInstance(comType);
if (comObject == null)
{
string err = string.Format("Unable to create an instance of the specified COM server \"{0}\".", progID.Value);
throw new TypeLoadException(err);
}
COMWrapper wrapper = new COMWrapper(comObject, type);
return(wrapper.GetTransparentProxy());
}
/// <summary>
/// Wrap an object and return the transparent proxy which intercepts all calls
/// to the object
/// </summary>
/// <param name="comObject">An object to intercept</param>
/// <param name="type">Interface which defines the method and properties to intercept</param>
/// <returns>Transparent proxy to the real proxy for the object</returns>
public static object Wrap(object comObject, Type type)
{
if (comObject == null)
{
throw new ArgumentNullException("comObject");
}
if (type == null)
{
throw new ArgumentNullException("type");
}
COMWrapper wrapper = new COMWrapper(comObject, type);
return(wrapper.GetTransparentProxy());
}
