Applies to: desktop apps only
The MsiUseFeatureEx 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
INSTALLSTATE MsiUseFeatureEx( __in LPCTSTR szProduct, __in LPCTSTR szFeature, __in DWORD dwInstallMode, __in DWORD dwReserved );
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.
- dwInstallMode [in]
-
This parameter can have the following value.
Value Meaning - INSTALLMODE_NODETECTION
Return value indicates the installation state.
- dwReserved [in]
-
Reserved for future use. This value must be set to 0.
Return value
| Value | Meaning |
|---|---|
|
The feature is not installed. |
|
The feature is advertised |
|
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 MsiUseFeatureEx 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 |
|
|
Library |
|
|
DLL |
|
|
Unicode and ANSI names | MsiUseFeatureExW (Unicode) and MsiUseFeatureExA (ANSI) |
See also
Send comments about this topic to Microsoft
Build date: 2/3/2012
[DllImport("msi.dll", CharSet=CharSet.Unicode)]
public static extern int MsiUseFeatureEx(string szProduct, string szFeature, uint dwInstallMode, uint dwReserved);
<DllImport("msi.dll", CharSet:=CharSet.Unicode)> _
Public Shared Function MsiUseFeatureEx(ByVal szProduct As String, ByVal szFeature As String, ByVal dwInstallMode As UInt32, ByVal dwReserved As UInt32) As Integer
End Function
As a part of the Open Protocol Specifications, the hex values for Win32 error codes can now be found at http://msdn2.microsoft.com/en-us/library/cc231199.aspx.