idl_module
Specifies an entry point in a .dll file.
Syntax
[ 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 a .hlp or .chm file.
helpcontext
(Optional) The Help ID for this type library.
hidden
(Optional) A parameter that prevents the library from being displayed. For more information, see the hidden MIDL attribute.
restricted
(Optional) Members of the library cannot be arbitrarily called. For more information, see the restricted MIDL attribute.
function_declaration
The function that you'll 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.
Use idl_module in two steps. First, 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 | Value |
|---|---|
| Applies to | Anywhere |
| Repeatable | No |
| Required attributes | None |
| Invalid attributes | None |
For more information, see Attribute Contexts.