Hermes: A Tutorial and Reference Manual - Researcher - IBM

foreyoudonotdeclareWindowexplicitly.Withinthatscope,thevariable Windowcontainsaconstantcopyofoneoftheselectedelementsofthetable.Fororderedtables,theiterationsoccurintheorderthattheselected
elementsoccurinthetable.Forunorderedtables,theiterationsoccurin Liketheinspectstatement,theforstatementcreatesascope.There-
inspect endfor; callPutLine(Window.WindowName); 2.AMiniatureSystem47
anarbitraryorder.
InputToWindowandQuit.Wegettheseportsbycreatinganapplication Thenewwindowrecordcontainsthewindow'sname,andthetwoports we'regoingtobuildanewwindowrecord,andinsertitintothetable. viationisparticularlyusefulintheforstatement. Nowlet'sdocreationanddestructionofwindows.Tocreateawindow, 2.7.5CreatingandKillingWindows Theconstructwhere('true')maybeabbreviatedas[].Thisabbre-
processes,andreturnthetwodesiredports.Wehavetopasstheapplicationbuildertheseparameters:theprogramnameandparameterstring,
aconnectiontoGetProgram,andaconnectiontoWriteToWindow.The structuresdened: codeisverystraightforwardnowthatwehavealltheinterfacesanddata eventCreate else receiveCreateCMfromCreate; ifexistsofCreatedWindows[CreateCM.WindowName] then blockbegin returnCreateCMexceptionDuplicate; --erroractionbecausewindowalreadyexists newCurrentWindow; CurrentWindow.WindowName:=CreateCM.WindowName; call(WindowApplicationOut#(createofApplicationBuilder))
builderprocess.Theapplicationbuilderwillcreatethethreeapplication
endblock; on(WindowApplicationInterface.NotCreated) returnCreateCMexceptionCreateFailure; insertCurrentWindowintoCreatedWindows; returnCreateCM; --erroractionifunabletocreateprocess (CreateCM.ProgramName,CreateCM.ParmString, CurrentWindow.InputToWindow,CurrentWindow.Quit); GetProgram,WriteToWindowCapability,CurrentWindow.WindowName,