MsiEnumRelatedProductsA function (msi.h)

Article
02/09/2023

The MsiEnumRelatedProducts function enumerates products with a specified upgrade code. This function lists the currently installed and advertised products that have the specified UpgradeCode property in their Property table.

Syntax

UINT MsiEnumRelatedProductsA(
  [in]  LPCSTR lpUpgradeCode,
  [in]  DWORD  dwReserved,
  [in]  DWORD  iProductIndex,
  [out] LPSTR  lpProductBuf
);

Parameters

[in] lpUpgradeCode

The null-terminated string specifying the upgrade code of related products that the installer is to enumerate.

[in] dwReserved

This parameter is reserved and must be 0.

[in] iProductIndex

The zero-based index into the registered products.

[out] lpProductBuf

A buffer to receive the product code GUID. This buffer must be 39 characters long. The first 38 characters are for the GUID, and the last character is for the terminating null character.

Return value

Value	Meaning
ERROR_BAD_CONFIGURATION	The configuration data is corrupt.
ERROR_INVALID_PARAMETER	An invalid parameter was passed to the function.
ERROR_NO_MORE_ITEMS	There are no products to return.
ERROR_NOT_ENOUGH_MEMORY	The system does not have enough memory to complete the operation. Available starting with Windows Server 2003.
ERROR_SUCCESS	A value was enumerated.

Remarks

See UpgradeCode property.

To enumerate currently installed and advertised products that have a specific upgrade code, an application should initially call the MsiEnumRelatedProducts function with the iProductIndex parameter set to zero. The application should then increment the iProductIndex parameter and call MsiEnumRelatedProducts until the function returns ERROR_NO_MORE_ITEMS, which means there are no more products with the specified upgrade code.

When making multiple calls to MsiEnumRelatedProducts to enumerate all of the related products, each call should be made from the same thread.

Note

The msi.h header defines MsiEnumRelatedProducts as an alias that automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that is not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.

Requirements

Requirement	Value
Minimum supported client	Windows Installer 5.0 on Windows Server 2012, Windows 8, 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 or Windows XP. See the Windows Installer Run-Time Requirements for information about the minimum Windows service pack that is required by a Windows Installer version.
Target Platform	Windows
Header	msi.h
Library	Msi.lib
DLL	Msi.dll

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