// This is used for the case of a class outside of a type
// libarary
protected Type GetTypeForClass()
{
Type type = null;
// See if we have type lib information from the registry
if (_typeLibString != null)
{
return(GetTypeFromTypeLib
(TypeLibrary.GetTypeLib(new Guid(_typeLibString),
_typeLibVersion)));
}
// Have to try and create the object and get the type lib
// information from the created object
if (TraceUtil.If(this, TraceLevel.Info))
{
TraceUtil.WriteLineInfo(this,
"Attempting to create obj for: "
+ this);
}
IntPtr comObj;
int result = ActiveX.CoCreateInstance(ref _guid,
(IntPtr)0,
ActiveX.CLSCTX_SERVER,
ref ActiveX.IUnknownIID,
out comObj);
if (result == 0)
{
ComObjectInfo objInfo = null;
try
{
// Wrap our object info stuff and get the type
objInfo = new ComObjectInfo(comObj);
type = GetTypeFromTypeLib(objInfo.TypeLib);
}
catch (Exception ex)
{
_typeFailedException =
new Exception("Unable to determine CLR type for "
+ GetName(), ex);
throw _typeFailedException;
}
finally
{
try
{
// Clean up the object info, if we made it that
// far
if (objInfo != null)
{
Object o = objInfo.Obj;
ObjectInfo.RemoveObjectInfo(o);
while (true)
{
int count = Marshal.ReleaseComObject(o);
TraceUtil.WriteLineInfo
(this,
"final Marshal.ReleaseComObject count: "
+ count);
if (count <= 0)
{
break;
}
}
}
while (true)
{
int count = Marshal.Release(comObj);
TraceUtil.WriteLineInfo
(this, "final Marshal.Release count: "
+ count);
if (count <= 0)
{
break;
}
}
}
catch (Exception ex)
{
TraceUtil.WriteLineWarning
(this, "error on cleanup: " + ex);
// We tried...
}
ActiveX.CoFreeUnusedLibraries();
}
return(type);
}
_typeFailedException =
new Exception("Unable to determine CLR type because "
+ "I can't create a COM object (0x"
+ result.ToString("X")
+ ") from CLSID: " + _guidStr);
throw _typeFailedException;
}
