The MsiSourceListGetInfo function retrieves information about the source list for a product or patch in a specific context.

Syntax

C++UINT MsiSourceListGetInfo(
  __in         LPCTSTR szProductCodeOrPatchCode,
  __in_opt     LPCTSTR szUserSid,
  __in         MSIINSTALLCONTEXT dwContext,
  __in         DWORD dwOptions,
  __in         LPCTSTR szProperty,
  __out_opt    LPTSTR szValue,
  __inout_opt  LPDWORD pcchValue
);

Parameters

szProductCodeOrPatchCode [in]

The ProductCode or patch GUID of the product or patch. Use a null-terminated string. If the string is longer than 39 characters, the function fails and returns ERROR_INVALID_PARAMETER. This parameter cannot be NULL.

szUserSid [in, optional]

This parameter can be a string security identifier (SID) that specifies the user account that contains the product or patch. The SID is not validated or resolved. An incorrect SID can return ERROR_UNKNOWN_PRODUCT or ERROR_UNKNOWN_PATCH. When referencing a machine context, szUserSID must be NULL and dwContext must be MSIINSTALLCONTEXT_MACHINE.

Type of SID	Meaning
NULL	NULL denotes the currently logged on user. When referencing the current user account, szUserSID can be NULL and dwContext can be MSIINSTALLCONTEXT_USERMANAGED or MSIINSTALLCONTEXT_USERUNMANAGED.
User SID	Specifies enumeration for a specific user in the system. An example of a user SID is "S-1-3-64-2415071341-1358098788-3127455600-2561".

 

Note  The special SID string s-1-5-18 (system) cannot be used to enumerate products or patches installed as per-machine. Setting the SID value to s-1-5-18 returns ERROR_INVALID_PARAMETER.

Note  The special SID string s-1-1-0 (everyone) should not be used. Setting the SID value to s-1-1-0 fails and returns ERROR_INVALID_PARAM.

dwContext [in]

This parameter specifies the context of the product or patch instance. This parameter can contain one of the following values.

Type of context	Meaning
MSIINSTALLCONTEXT_USERMANAGED	The product or patch instance exists in the per-user-managed context.
MSIINSTALLCONTEXT_USERUNMANAGED	The product or patch instance exists in the per-user-unmanaged context.
MSIINSTALLCONTEXT_MACHINE	The product or patch instance exists in the per-machine context.

 

dwOptions [in]

The dwOptions value specifies the meaning of szProductCodeOrPatchCode.

Flag	Meaning
MSICODE_PRODUCT	szProductCodeOrPatchCode is a product code GUID.
MSICODE_PATCH	szProductCodeOrPatchCode is a patch code GUID.

 

szProperty [in]

A null-terminated string that specifies the property value to retrieve. The szProperty parameter can be one of the following values.

Name	Meaning
INSTALLPROPERTY_MEDIAPACKAGEPATH "MediaPackagePath"	The path relative to the root of the installation media.
INSTALLPROPERTY_DISKPROMPT "DiskPrompt"	The prompt template that is used when prompting the user for installation media.
INSTALLPROPERTY_LASTUSEDSOURCE "LastUsedSource"	The most recently used source location for the product.
INSTALLPROPERTY_LASTUSEDTYPE "LastUsedType"	An "n" if the last-used source is a network location. A "u" if the last used source is a URL location. An "m" if the last used source is media. An empty string ("") if there is no last used source.
INSTALLPROPERTY_PACKAGENAME "PackageName"	The name of the Windows Installer package or patch package on the source.

 

szValue [out, optional]

An output buffer that receives the information. This buffer should be large enough to contain the information. If the buffer is too small, the function returns ERROR_MORE_DATA and sets *pcchValue to the number of TCHAR in the value, not including the terminating NULL character.

If the szValue is set to NULL and pcchValue is set to a valid pointer, the function returns ERROR_SUCCESS and sets *pcchValue to the number of TCHAR in the value, not including the terminating NULL character. The function can then be called again to retrieve the value, with szValue buffer large enough to contain *pcchValue + 1 characters.

If szValue and pcchValue are both set to NULL, the function returns ERROR_SUCCESS if the value exists, without retrieving the value.

pcchValue [in, out, optional]

A pointer to a variable that specifies the number of TCHAR in the szValue buffer. When the function returns, this parameter is set to the size of the requested value whether or not the function copies the value into the specified buffer. The size is returned as the number of TCHAR in the requested value, not including the terminating null character.

This parameter can be set to NULL only if szValue is also NULL, otherwise the function returns ERROR_INVALID_PARAMETER.

Return Value

The MsiSourceListGetInfo function returns the following values.

Remarks

Administrators can modify the installation of a product or patch instance that exists under the machine context or under their own per-user context (managed or unmanaged.) They can modify the installation of a product or patch instance that exists under any user's per-user-managed context. Administrators cannot modify another user's installation of a product or patch instance that exists under that other user's per-user-unmanaged context.

Non-administrators cannot modify the installation of a product or patch instance that exists under another user's per-user context (managed or unmanaged.) They can modify the installation of a product or patch instance that exists under their own per-user-unmanaged context. They can modify the installation of a product or patch instance under the machine context or their own per-user-managed context only if they are enabled to browse for a product or patch source. Users can be enabled to browse for sources by setting policy. For more information, see DisableBrowse, AllowLockdownBrowse, and AlwaysInstallElevated policies.

Windows Installer 2.0:  Not supported. The MsiSourceListGetInfo function is available beginning with Windows Installer 3.0.

Requirements

See Also

MsiSourceListSetInfo

ProductCode

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Build date: 8/13/2009