Event Handler Index

InstallShield 2026 » InstallScript Language Reference

Event handlers are InstallScript functions that are called in response to events that occur during setup. The names of these handlers are reserved. (It is not necessary to prototype these functions in your script.)

Project: Some of the following event handlers only apply to InstallScript or InstallScript MSI projects. Some apply to both types. Refer to the Project Type column to determine which projects are supported.

Event Handlers Index
Event Handler	Project Type
OnAbort	InstallScript, InstallScript MSI
OnAdminInstallUIAfter	InstallScript MSI
OnAdminInstallUIBefore	InstallScript MSI
OnAdminPatchUIAfter	InstallScript MSI
OnAdminPatchUIBefore	InstallScript MSI
OnAdvertisementAfter	InstallScript MSI
OnAdvertisementBefore	InstallScript MSI
OnAppSearch	InstallScript, InstallScript MSI
OnBegin	InstallScript, InstallScript MSI
OnCanceling	InstallScript, InstallScript MSI
OnCCPSearch	InstallScript, InstallScript MSI
OnCheckMediaPassword	InstallScript
OnComponentError	InstallScript, InstallScript MSI
OnCustomizeUninstInfo	InstallScript
OnDIFxLogCallback	InstallScript
OnEnd	InstallScript, InstallScript MSI
OnError	InstallScript MSI
OnException	InstallScript MSI
OnFileError	InstallScript
OnFileLocked	InstallScript
OnFileReadOnly	InstallScript
OnFilesInUse	InstallScript MSI
OnFilterComponents	InstallScript, InstallScript MSI
OnFirstUIAfter	InstallScript, InstallScript MSI
OnFirstUIBefore	InstallScript, InstallScript MSI
OnGeneratedMSIScript	InstallScript MSI
OnGeneratingMSIScript	InstallScript MSI
OnHelp	InstallScript, InstallScript MSI
OnIISComponentInstalled	InstallScript, InstallScript MSI
OnIISInitialize	InstallScript, InstallScript MSI
OnIISUninitialize	InstallScript, InstallScript MSI
OnIISVRootUninstalling	InstallScript, InstallScript MSI
OnInstalled	InstallScript, InstallScript MSI
OnInstalledFile	InstallScript
OnInstalledFontFile	InstallScript
OnInstallFilesActionAfter	InstallScript, InstallScript MSI
OnInstallFilesActionBefore	InstallScript, InstallScript MSI
OnInstalling	InstallScript, InstallScript MSI
OnInstallingFile	InstallScript
OnInternetError	InstallScript
OnLaunchAppAndWaitCallback	InstallScript, InstallScript MSI
OnLogonUserSetMsiProperties	InstallScript MSI
OnMaintUIAfter	InstallScript, InstallScript MSI
OnMaintUIBefore	InstallScript, InstallScript MSI
OnMD5Error	InstallScript
OnMoved	InstallScript, InstallScript MSI
OnMoveData	InstallScript
OnMoving	InstallScript, InstallScript MSI
OnMsiSilentInstall	InstallScript MSI
OnNetApiCreateUserAccount	InstallScript, InstallScript MSI
OnNextDisk	InstallScript
OnOutOfDiskSpace	InstallScript MSI
OnPatchUIAfter	InstallScript MSI
OnPatchUIBefore	InstallScript MSI
OnRebooted	InstallScript InstallScript MSI—if the InstallScript user interface (UI) style is the traditional style (which uses the InstallScript engine as an external UI handler)
OnRemovingSharedFile	InstallScript
OnResumeUIAfter	InstallScript MSI
OnResumeUIBefore	InstallScript MSI
OnRMFilesInUse	InstallScript MSI
OnSelfRegistrationError	InstallScript
OnSetTARGETDIR	InstallScript
OnSetUpdateMode	InstallScript
OnShowUI	InstallScript
OnSuiteInstallAfter	InstallScript
OnSuiteInstallBefore	InstallScript
OnSuiteMaintAfter	InstallScript
OnSuiteMaintBefore	InstallScript
OnSuiteUpdateAfter	InstallScript
OnSuiteUpdateBefore	InstallScript
OnSuiteShowUI	InstallScript
OnSQLBatchScripts	InstallScript
OnSQLComponentInstalled	InstallScript
OnSQLComponentUninstalled	InstallScript
OnSQLLogin	InstallScript
OnSQLServerInitialize	InstallScript
OnSQLServerInitializeMaint	InstallScript
OnUninstall	InstallScript, InstallScript MSI
OnUnInstalled	InstallScript, InstallScript MSI
OnUninstalledFile	InstallScript
OnUnInstalling	InstallScript, InstallScript MSI
OnUninstallingDIFxDriverFile	InstallScript
OnUninstallingFile	InstallScript
OnUninstallingFontFile	InstallScript
OnUpdateUIAfter	InstallScript
OnUpdateUIBefore	InstallScript
OnWarning	InstallScript MSI
OnXMLComponentInstalled	InstallScript
OnXMLComponentUninstalling	InstallScript
OnXMLInitialize	InstallScript
OnXMLUninitialize	InstallScript