User Guide

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Also see:

Guidelines for Calling .DLLs on page 502

Configuring .DLL Parameter Settings on page 510

Guidelines for Custom Action Location on page 499

Using the Custom Action Properties Tab on page 534

Using the Custom Action Location Tab on page 532

Call Custom DLL From Installed Files

This custom action calls a .DLL file that is installed by this installation. Use this custom

action to call the .DLL during installation, while leaving the .DLL on the destination

computer as part of the installation.

Tips

! You can send a variable parameter list to the .DLL.

! First add the file to be called to the Files page in Installation Expert.

! Shaded areas of MSI Script indicate restricted placement for this custom action;

because this custom action calls an installed file, it must run after files are installed.

Note

Before being passed to Windows Installer, calls you make with Call Custom DLL actions are

passed through a Wise-created .DLL, which facilitates the passing of parameters.

Usage

Double-click the custom action and complete the Details tab:

! Custom Action Name

Enter a unique name that begins with a letter or underscore. It can contain numbers

and periods. It must not match the name of any Windows Installer standard action.

See Standard Actions Reference in the Windows Installer SDK Help.

! DLL File. Specify a .DLL file to call during installation. It must have already been

added to this installation via the Files page.

! Function Name

Type the name of the function within the .DLL file to call.

! Parameter List

In the parameter list, specify the parameters to send to the .DLL.

! Return Value Type

Select the data type of the return value that is returned from the .DLL.

! Returned Property

Type or select a property name. The return value of the function call will be put into

this property.