Executing Script Code Only During Uninstallation or Only During Installation

InstallShield 2020

The installation script is executed during uninstallation and maintenance installations if MaintenanceStart rather than DeinstallStart is called to enable uninstallation. (In an event-based script, MaintenanceStart is called in the default OnMoveData event handler code.) To execute code only during uninstallation or maintenance installations, enclose it in the following if-then statement:

   if MAINTENANCE then

       /* this code is executed only during

       uninstallation or maintenance installations */

   endif;

To execute code only during a first installation, enclose it in the following if-then statement:

   if !MAINTENANCE then

       /* this code is executed only during

       a first installation */

   endif;

If code is not enclosed in either if-then statement, it is executed during uninstallation, maintenance installations, and first installations—with the following exceptions in event-based scripts:

•

The code in the following event handlers is executed only during uninstallation and maintenance installations:

OnMaintUIBefore

OnMaintUIAfter

•

The code in the following event handlers is executed only during the first installation:

OnCCPSearch

OnAppSearch

OnFirstUIBefore

OnFirstUIAfter