/// <summary>
/// Internal entry point for unmanaged COM activation API from native code
/// </summary>
/// <param name="cxtInt">Reference to a <see cref="ComActivationContextInternal"/> instance</param>
public static int GetClassFactoryForTypeInternal(ref ComActivationContextInternal cxtInt)
{
if (IsLoggingEnabled())
{
Log(
$@"{nameof(GetClassFactoryForTypeInternal)} arguments:
{cxtInt.ClassId}
{cxtInt.InterfaceId}
0x{cxtInt.AssemblyNameBuffer.ToInt64():x}
0x{cxtInt.TypeNameBuffer.ToInt64():x}
0x{cxtInt.ClassFactoryDest.ToInt64():x}");
}
try
{
var cxt = new ComActivationContext()
{
ClassId = cxtInt.ClassId,
InterfaceId = cxtInt.InterfaceId,
AssemblyName = Marshal.PtrToStringUTF8(cxtInt.AssemblyNameBuffer),
TypeName = Marshal.PtrToStringUTF8(cxtInt.TypeNameBuffer)
};
object cf = GetClassFactoryForType(cxt);
IntPtr nativeIUnknown = Marshal.GetIUnknownForObject(cf);
Marshal.WriteIntPtr(cxtInt.ClassFactoryDest, nativeIUnknown);
}
catch (Exception e)
{
return(e.HResult);
}
return(0);
}
/// <summary>
/// Entry point for unmanaged COM activation API from managed code
/// </summary>
/// <param name="cxt">Reference to a <see cref="ComActivationContext"/> instance</param>
public static object GetClassFactoryForType(ComActivationContext cxt)
{
if (cxt.InterfaceId != typeof(IClassFactory).GUID &&
cxt.InterfaceId != typeof(IClassFactory2).GUID)
{
throw new NotSupportedException();
}
Type classType = FindClassType(cxt.ClassId, cxt.AssemblyName, cxt.TypeName);
return(new BasicClassFactory(cxt.ClassId, classType));
}
