LotusScript for Visual Basic Programmers - IBM Redbooks

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Language Syntax Comparison you to react to events generated within these controls, in the same way as other OLE2 containers do now. Structure With Release 4 of Lotus Notes, both LotusScript and VisualBasic operate within the same type of development environments. Each has a layer to present and retrieve information to the user and an underlying layer to store this information. With Release 4 of Notes, Lotus has added the LotusScript programming layer to bind together the Lotus applications packages as well as to increase the ability to use other packages with Notes as well, via OLE Automation. This section contains a comparison of the statements and functions making up LotusScript and Visual Basic. Other References This section covers the low-level syntactical language differences between LotusScript and Visual Basic. Much of the material in this section will be covered at a level just high enough to explain the basic concepts involved. If you wish to read more about the language specifics, see the LotusScript Language Reference (also available within the Notes Help database) and the LotusScript Programmer’s Guide. The LotusScript manuals are available as a documentation pack from Lotus: they are not packaged inside Notes boxes. See the Visual Basic 4.0 Language Reference for more on the Visual Basic language. The respective web sites of Lotus (http://www.lotus.com/devtools) and Microsoft (http://www.microsoft.com) will offer the most up-to-date material and announcements about each language and their supporting tools. 4 LotusScript for Visual Basic Programmers
There are many good examples of how to extend the use of LotusScript by adding LotusScript Notes classes found in the Notes Programmer’s Guide, Part 1 - Chapter 4. Data Types The data types supported under LotusScript and Visual Basic are very similar. Typeless or Typed variables Declaring the type of data that a variable holds is not strictly a requirement in the typeless, variant data type declarations possible in both LotusScript and Visual Basic. While you are able to specify what type of data a variable holds, in both languages you can also reserve a 16-byte piece of storage by simply using the variable without a type. You then assign the “type” of data for this variable whenever you first load actual data into the variable. For example in the first block of code, you’ll notice that UserID is used without first being declared. Dim rc variant ' dim a return code as UserID = "Bob Sands" ' a variant is created and 'typed' ' as a string" rc = Int(UserID) ' this will fail at run time since ' since UserID is now a string; which ' is an invalid parm for Int( ). whereas the following code will both work and will actually catch the error at design time when compiled, not just at run time: Dim rc ' dim a return code as variant Dim UserID# ' a double is created UserID = 22.34 ' rc = Int(UserID) ' this will work as expected. UserID = "Bill Sands" ' and this will be caught at design ' time. Chapter 1: LotusScript and Visual Basic: A Comparison 5
Page 1 and 2: LotusScript for Visual Basic Progra
Page 3 and 4: Abstract This redbook describes how
Page 5 and 6: NotesTimer ................... ....
Page 7 and 8: Preface This redbook describes how
Page 9 and 10: Chapter 12, “Using Notes as an OL
Page 11 and 12: Chapter 1 LotusScript and Visual Ba
Page 13: Object-Oriented Terminology LotusSc
Page 17 and 18: LotusScript only allows arrays and
Page 19 and 20: File I/O Code such as the following
Page 21 and 22: "frmMain::cmdUpdateDB_Click") then
Page 23 and 24: MessageBox Visual Basic developers
Page 25 and 26: Extending the Code Visual Basic pro
Page 27 and 28: Lotus Components You can add Window
Page 29 and 30: Lotus, creating a cut-down version
Page 31 and 32: Once you have created the object, y
Page 33 and 34: Public Function PostError(ErrNumber
Page 35 and 36: 1. Consts move out of the class int
Page 37 and 38: In Visual Basic sending a message i
Page 39 and 40: Where LotusScript commands and synt
Page 41 and 42: Chapter 2 The Notes Integrated Deve
Page 43 and 44: Action Pane This is the narrow wind
Page 45 and 46: Run Area The three radio buttons sp
Page 47 and 48: 4. Click the Methods twistie, and a
Page 49 and 50: When you enter structured programmi
Page 51 and 52: ut the results are different. Such
Page 53 and 54: Before we let the code run to the b
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Page 57 and 58: NotesACL Every NotesDatabase contai
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Page 61 and 62: Method Description New Creates a ne
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NotesDateTime NotesDateTime is cont
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Property Description Name Read-only
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Method Description Save Saves any c
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Property Description UniversalID Re
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NotesEmbeddedObject The NotesEmbedd
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NotesInternational The NotesInterna
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NotesLog Property Description IsNam
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NotesName The NotesName class will
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NotesRichTextItem NotesRichTextItem
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Method Description CreateNewsletter
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NotesTimer The NotesTimer class wil
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Method Description GetPrevSibling G
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NotesUIWorkspace NotesUIWorkspace c
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Method Description FindFreeTimeDial
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NotesUIDatabase The NotesUIDatabase
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The following figure shows how it w
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Dim doc As Object We create a refer
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Declaring Notes Classes in Visual B
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In Visual Basic, we can access the
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Dim doc As Object Dim item As Objec
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The following figure shows a Visual
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Chapter 5 Converting HiTest Applica
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We declare an hgstatus variable. Al
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Converting a HiTest Application Usi
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2. Put the following code on the Cr
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Converting a HiTest Application to
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6. Enter the following code on the
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10. From the Notes menu, choose Fil
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Accessing Notes Session Properties
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Example This example sets the value
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HiTest Functions Notes Class method
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Accessing Notes Sessions in LotusSc
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Chapter 7 Accessing Notes Databases
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We set the property of hgdatabase.
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HiTest Name LotusScript Notes Class
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All of the methods mentioned above
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REM view becomes a NotesView object
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We create a new database on a local
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Dim hgviewid As Long Dim hgview As
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Following is an explanation of the
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We declare a session, db and view w
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The HiTest Visual Basic API does no
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Chapter 9 Accessing Notes Documents
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We create and open a new document u
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HiTest Function Name Notes Classes
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Set doc = dc.GetFirstDocument(1247)
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NotesUIDocument = EditDocument([boo
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Set dc = db.AllDocuments Set doc =
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We enter text in the Subject, Categ
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Attachments Internally, Lotus Notes
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hgstatus = HTDocumentClose(hgdest_d
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Windows 3.1. For details on the OLE
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Dim db As NotesDatabase Dim view As
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Perform the following steps to crea
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Tip You can select Display as icon
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Creating a Linked Object 3. Choose
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Creating an Embedded Object Using L
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Messagebox msg$, boxType, "Successf
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Embedding a New Object in a Documen
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Note If you do not want to create t
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answer% = Messagebox ("Object has b
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16. Click Yes to confirm that you w
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7. Select the Show twistie when row
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Editing a Linked Object Note If you
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Editing an Embedded or a Linked Obj
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The object’s application is launc
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Following is a description of the L
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(10) Select Case object.Type Case E
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This statement assigns object as a
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HiTest Class Agent Attachment CDRec
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HiTest Class Datetime Document HiTe
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HiTest Class Item HiTest Functions
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HiTest Class User View Viewcell HiT
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other operating environments may va
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How To Get ITSO Redbooks This secti
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How Customers Can Get ITSO Redbooks
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H handling errors, 95 hierarchical
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LotusScript for Visual Basic Programmers - IBM Redbooks

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