The MsiOpenPackageEx function opens a package to use with functions that access the product database. The MsiCloseHandle function must be called with the handle when the handle is no longer needed.

Note  Initialize COM on the same thread before calling the MsiOpenPackage, MsiOpenPackageEx, or MsiOpenProduct function.

Syntax

C++UINT WINAPI MsiOpenPackageEx(
  __in   LPCTSTR szPackagePath,
  __in   DWORD dwOptions,
  __out  MSIHANDLE *hProduct
);

Parameters

szPackagePath [in]

The path to the package.

dwOptions [in]

The bit flags to indicate whether or not to ignore the computer state. Pass in 0 (zero) to use MsiOpenPackage behavior.

Constant	Meaning
MSIOPENPACKAGEFLAGS_IGNOREMACHINESTATE 1	Ignore the computer state when creating the product handle.

 

hProduct [out]

A pointer to a variable that receives the product handle.

Return Value

If this function fails, it may return a system error code. For more information, see System Error Codes.

Remarks

To create a restricted product handle that is independent of the current machine state and incapable of changing the current machine state, use MsiOpenPackageEx with MSIOPENPACKAGEFLAGS_IGNOREMACHINESTATE set in dwOptions.

Note that if dwOptions is MSIOPENPACKAGEFLAGS_IGNOREMACHINESTATE or 1, MsiOpenPackageEx ignores the current machine state when creating the product handle. If the value of dwOptions is 0, MsiOpenPackageEx is the same as MsiOpenPackage and creates a product handle that is dependent upon whether the package specified by szPackagePath is already installed on the computer.

The restricted handle created by using MsiOpenPackageEx with MSIOPENPACKAGEFLAGS_IGNOREMACHINESTATE only permits execution of dialogs, a subset of the standard actions, and custom actions that set properties ( Custom Action Type 35, Custom Action Type 51, and Custom Action Type 19). The restricted handle prevents the use of custom actions that run Dynamic-Link Libraries, Executable Files or Scripts.

You can call MsiDoAction on the following standard actions using the restricted handle. All other actions return ERROR_FUNCTION_NOT_CALLED if called with the restricted handle.

• ADMIN
• ADVERTISE
• INSTALL
• SEQUENCE
• AppSearch action
• CCPSearch
• CostFinalize
• CostInitialize
• FileCost
• FindRelatedProducts
• IsolateComponents action
• LaunchConditions
• MigrateFeatureStates
• ResolveSource
• RMCCPSearch
• ValidateProductID

The MsiCloseHandle function must be called when the handle is not needed.

Requirements

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Build date: 8/13/2009