The MsiUseFeature function increments the usage count for a particular feature and indicates the installation state for that feature. This function should be used to indicate an application's intent to use a feature.
Syntax
C++INSTALLSTATE MsiUseFeature(
__in LPCTSTR szProduct,
__in LPCTSTR szFeature
);
Parameters
- szProduct [in]
-
Specifies the product code for the product that owns the feature to be used.
- szFeature [in]
-
Identifies the feature to be used.
Return Value
| Value | Meaning |
|---|---|
|
The feature is not installed. |
|
The feature is advertised |
|
The configuration data is corrupt. |
|
Invalid function argument. |
|
The feature is locally installed and available for use. |
|
The feature is installed from the source and available for use. |
|
The feature is not published. |
Remarks
The MsiUseFeature function should only be used on features known to be published. INSTALLSTATE_UNKNOWN indicates that the program is trying to use a feature that is not published. The application should determine whether the feature is published before calling MsiUseFeature by calling MsiQueryFeatureState or MsiEnumFeatures. The application should make these calls while it initializes. An application should only use features that are known to be published.
Requirements
| Version | Windows Installer 5.0 on Windows Server 2008 R2 or Windows 7. Windows Installer 4.0 or Windows Installer 4.5 on Windows Server 2008 or Windows Vista. Windows Installer on Windows Server 2003, Windows XP, and Windows 2000. See the Windows Installer Run-Time Requirements for information about the minimum Windows service pack that is required by a Windows Installer version. |
|---|---|
| Header | Msi.h |
| Library | Msi.lib |
| DLL | Msi.dll |
| Unicode and ANSI names | MsiUseFeatureW (Unicode) and MsiUseFeatureA (ANSI) |
See Also
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Build date: 8/13/2009
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