ISDIFXAPPID
InstallShield 2020 ยป InstallScript Language Reference
This predefined global system variable determines the application to associate when installing or uninstalling device drivers. ISDIFXAPPID is set to PRODUCT_GUID by default during initialization and can be changed as desired to specify an alternate application ID.
Note:See the DIFxAPI documentation for the INSTALLERINFO structure for more information regarding specifying application association.