type_strict_context_handle attribute
Use the [type_strict_context_handle] in an ACF file to set restrictions on context handles.
[
type_strict_context_handle
[, interface-attribute-list]
]
interface interface-name
{
interface-definition-statements
}
Parameters
-
interface-attribute-list
-
Other ACF attributes that apply to the interface as a whole. Valid attributes include auto_handle, implicit_handle, explicit_handle, and optimize, code, or nocode. Separate multiple attributes with commas.
-
interface-name
-
The name of the interface.
-
interface-definition-statements
-
One or more MIDL statements that define the elements of the interface.
Remarks
In order to use this attribute, the -target flag must be set to NT60 (or higher) when running midl.exe.
[type_strict_context_handle] is a functional superset of [strict_context_handle]. In [strict_context_handle], the type ID of the handle is always 0; in [type_strict_context_handle], a unique type ID is assigned by the MIDL compiler.
It is recommended to use [type_strict_context_handle] rather than [strict_context_handle]. Context handles are not associated with a specific type by default. When multiple types of context handles are used in the same process, it is possible for a malicious client to pass a context handle in place of another to produce undesirable results. The use of [type_strict_context_handle] allows applications to enforce context handle type consistency and prevent any mismatched context handle type usage.
A context handle attributed with [type_strict_context_handle] cannot also be attributed with [strict_context_handle].
See also