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Activation Context Reference

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The activation context functions and structures are used with side-by-side assemblies.

The following table lists the activation context functions.

Function Description
ActivateActCtx Activates the specified activation context.
AddRefActCtx Increments the reference count of the specified activation context.
CreateActCtx Creates an activation context.
DeactivateActCtx Deactivates the specified activation context.
FindActCtxSectionGuid Returns data contained in the ACTCTX_SECTION_KEYED_DATA structure that corresponds to the specified GUID.
FindActCtxSectionString Returns data contained in the ACTCTX_SECTION_KEYED_DATA structure that corresponds to the specified string.
GetCurrentActCtx Returns the current activation context.
IsolationAwareCleanup Ensures that memory is freed when a manifest is loaded, unloaded, and reloaded.
QueryActCtxW Queries the activation context for information about an assembly or file.
QueryActCtxSettingsW Specifies the namespace and attribute name of the attribute that is to be queried.
ReleaseActCtx Decrements the reference count of the specified activation context.
ZombifyActCtx Deactivates the specified activation context, but does not deallocate it.

The following table lists activation context structures.

Structure Description
ACTIVATION_CONTEXT_ASSEMBLY_DETAILED_INFORMATION Contains detailed information about the activation context.
ACTIVATION_CONTEXT_DETAILED_INFORMATION Contains information about the assembly in the activation context.
ACTIVATION_CONTEXT_QUERY_INDEX Contains the assembly within the activation context and the index of the file within the assembly.
ACTCTX Contains information that describes a specific activation context.
ACTCTX_SECTION_KEYED_DATA Returns the activation context information along with either the GUID or 32-bit integer-tagged activation context section.
ASSEMBLY_FILE_DETAILED_INFORMATION Contains information about a file of the assembly in the activation context.
ACTIVATION_CONTEXT_RUN_LEVEL_INFORMATION Used by the QueryActCtxW function.
Windows Server 2003 and Windows XP: This structure is not available.
COMPATIBILITY_CONTEXT_ELEMENT Used by the QueryActCtxW function as part of the ACTIVATION_CONTEXT_COMPATIBILITY_INFORMATION structure.
Windows Server 2008 and earlier, and Windows Vista and earlier: This structure is not available. It is available beginning with Windows Server 2008 R2 and Windows 7.
ACTIVATION_CONTEXT_COMPATIBILITY_INFORMATION Used by the QueryActCtxW function.
Windows Server 2008 and earlier, and Windows Vista and earlier: This structure is not available. It is available beginning with Windows Server 2008 R2 and Windows 7.

The following table lists activation context enumerations.

Enumeration Description
ACTCTX_REQUESTED_RUN_LEVEL Describes the requested run level of the activation context.Windows Server 2003 and Windows XP: This enumeration is not available.
ACTCTX_COMPATIBILITY_ELEMENT_TYPE Describes the compatibility element in the application manifest.Windows Server 2008 and earlier, and Windows Vista and earlier: This enumeration is not available. It is available beginning with Windows Server 2008 R2 and Windows 7.