VBScript Reference Manual for InduSoft Web Studio - ICP DAS

InduSoft Web StudioVBScript Reference ManualNotwithstanding these restrictions, VBScript code within theActiveX Event interface still has access to all GlobalProcedures, as well as any procedures in the Screen Scriptfor the same Screen where the ActiveX object is configured.VBScript code within the ActiveX Event interface is executed whenever one or more of the selectedEvent conditions (listed in the Configuration dialog box) occur for the selected ActiveX object. Theexecution of the script on the Server executes independently from the execution on Web Thin Clients.Key Notes:• Before executing the application, be sure to save (or close) the Screenafter any VBScript is entered. Otherwise it might not be updated. This istrue for all VBScript interfaces.Background Task Startup ScriptIn the Tasks Worksheet folder is the Script subfolder whichwill contain a default Startup Script icon and anyBackground Task Script Groups declared. To edit theBackground Task Startup Script:1. Click on the Tasks Worksheet folder2. Click on the Script subfolder.Any VBScript code placed in this interface will execute whenthe Background Task module is started, which occurs whenthe IWS application is started. This code will only executeonce, and is meant for initialization purposes.Variables and Procedures declared in the Background TaskStartup Script are available to the Background Task Script Group, but are not available to any VBScriptinterfaces in the Graphic Module. Remember that the Background Task Group Startup Script canaccess the procedures declared in Global Procedures.Since the Background Task Startup Script has no interaction with a Graphics script, the only Serverdisplay I/O functions that can be implemented are MsgBox and InputBox functions.Since the Background Task Startup Script runs on the IWS Server, there is no effect with Web ThinClients.Background Task Script GroupsThe Background Task Script Groups consist of one or more VBScript interface groups that run in theBackground Task. By default, there are no Background Task Script Groups unless added by thedeveloper. These Script Groups will execute in a background as long as their Execution Field is in aTRUE state.Background Task Script Groups have the following limitations:InduSoft, Ltd. 51