Lets you enter a property description and property DISPID, and provide a callback function to determine whether any CLSID should be added to the property map.
PROP_ENTRY_INTERFACE_CALLBACK( szDesc, dispid, clsid, pfnFunc, vt )
The property description.
The DISPID of the property.
The CLSID of the associated property page. Use the special value CLSID_NULL for a property that does not have an associated property page.
The callback function that controls data during the loading process.
The type of the property.
Include this macro to give an application more control over the IPersistStreamInitImpl::Load process. The callback function pfnFunc is called when IPersistStreamInitImpl::Load is retrieving data from a non-trusted stream. The callback function filters the data and controls which objects are loaded.
This macro only applies if IPersistStreamInitImpl is a base class and the class is advertised as safe for initializing. Otherwise, you should not use this macro.
This macro is only valid if vt is VT_DISPATCH or VT_UNKNOWN. Passing in a different value for vt to this macro will cause a compilation error. For any other value of vt, use PROP_ENTRY_TYPE.
If you are creating a web control that needs to be initialized, you should use the IPersistPropertyBagImpl Class instead of IPersistStreamInitImpl to initialize properties. IPersistStreamInitImpl possess a greater risk in binary format than IPersistPropertyBagImpl.
See the example for BEGIN_PROP_MAP.