idl_module

Specifies an entry point in a .dll file.

[ idl_module (  
   name=module_name,  
   dllname=dll,  
   uuid="uuid",  
   helpstring="help text",  
   helpstringcontext=helpcontextID,  
   helpcontext=helpcontext,  
   hidden, 
   restricted 
) ] 
function declaration

Parameters

• name
  A user-defined name for the code block that will appear in the .idl file.

• dllname (optional)
  The .dll file that contains the export.

• uuid (optional)
  A unique ID.

• helpstring (optional)
  A character string used to describe the type library.

• helpstringcontext (optional)
  The ID of a help topic in an .hlp or .chm file.

• helpcontext (optional)
  The Help ID for this type library.

• hidden (optional)
  A parameter that prevents the library from being displayed. See the hidden MIDL attribute for more information.

• restricted (optional)
  Members of the library cannot be arbitrarily called. See the restricted MIDL attribute for more information.

• function declaration
  The function that you will define.

Remarks

The idl_module C++ attribute lets you specify the entry point in a .dll file, which allows you to import from a .dll file.

The idl_module attribute has functionality similar to the module MIDL attribute.

You can export anything from a COM object that you can export from a .dll file by putting a DLL entry point in the library block of an .idl file.

Your must use idl_module in two steps. First, you must define a name/DLL pair. Then, when you use idl_module to specify an entry point, specify the name and any additional attributes.

Example

The following code shows how to use the idl_module attribute:

// cpp_attr_ref_idl_module.cpp
// compile with: /LD
[idl_quote("midl_pragma warning(disable:2461)")];
[module(name="MyLibrary"), idl_module(name="MyLib", dllname="xxx.dll")];
[idl_module(name="MyLib"), entry(4), usesgetlasterror]
void FuncName(int i);

Requirements

Attribute Context

For more information, see Attribute Contexts.

See Also

Reference

entry

Other Resources

IDL Attributes

Stand-Alone Attributes

Attributes Samples