Patch.PatchProperty method

The PatchProperty property gets information about a specific patch applied to a specific instance of the product. This property calls MsiGetPatchInfoEx.

Syntax

Patch.PatchProperty(
  szProperty
)

Parameters

szProperty

The szProperty parameter can be one of the following values.

Name	Meaning
LocalPackage	Get the cached patch file used by the product.
Transforms	Get the set of patch transforms applied to the product by the last patch installation. This value may not be available for per-user-unmanaged applications if the user is not logged in to the computer.
InstallDate	Get the date when the patch was applied to the product.
Uninstallable	Returns "1" if the patch is marked as possible to uninstall from the product. In this case, the installer can still block the uninstallation if this patch is required by another patch that cannot be uninstalled.
State	Returns "1" if this patch is currently applied to the product. Returns "2" if this patch has been superseded by another patch. Returns "4" if this patch has been made obsolete by another patch. These values correspond to the constants used by the dwFilter parameter of MsiEnumPatchesEx.
DisplayName	Get the registered display name for the patch. For patches that do not include the DisplayName property in the MsiPatchMetadata table, the returned display name is an empty string ("").
MoreInfoURL	Get the registered support information URL for the patch. For patches that do not include the MoreInfoURL property in the MsiPatchMetadata table, the returned support information URL is an empty string ("").

 

Return value

This method does not return a value.

Remarks

This method can return ERROR_UNKNOWN_PATCH, if the Patch object is initialized with an empty string for ProductCode.

Requirements

See also

Patch

MsiEnumPatchesEx

MsiGetPatchInfoEx

Not Supported in Windows Installer 2.0 and earlier