usesgetlasterror attribute
The [usesgetlasterror] attribute signals the caller that it can call GetLastError to retrieve the error code.
[
module-attributes
]
module module-name
{
[entry(entry-id), usesgetlasterror [, other-attributes]] return-type function-name(param-list);
};
Parameters
-
module-attributes
-
Zero or more MIDL attributes that will be applied to the module.
-
module-name
-
The identifier name of the module.
-
entry-id
-
Specifies the module entry point–function name or integer-identification number.
-
other-attributes
-
Zero or more MIDL attributes that will be applied to the remote procedure.
-
return-type
-
The type of the data that the remote procedure will return upon completion.
-
function-name
-
The name of the remote procedure as defined in the IDL file.
-
param-list
-
Zero or more parameters to the remote procedure.
Remarks
The [usesgetlasterror] attribute can be set on a module entry point, if that entry point uses the Windows function SetLastError to return error codes. The attribute tells the caller that, if there is an error when calling that function, the caller can then call GetLastError to retrieve the error code.
Examples
[
dllname("MyOwn.dll")
]
module MyModule
{
[entry("One"), usesgetlasterror, bindable, requestedit,
propputref, defaultbind] HRESULT Func1(
[in]IUnknown * iParam1,
[out] long * Param2) ;
[entry("TwentyOne"), usesgetlasterror,
hidden, vararg] SAFEARRAY (int) Func2(
[in, out] SAFEARRAY (variant) *varP) ;
// Other module definition statements.
};
See also