This script creates a new, blank Lotus worksheet object in the Description field of the current document. LotusWorkbook must be in the OLE. Hi This is a known issue but if you get it the first time it may confuse you. Lotus script function CreateObject() does not work in NotesAgent if it. Unfortunately CreateObject returns error Cannot Create Automation Does anyone know whether there is any LotusScript equivalent?.
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This section covers all the basic fundamental pieces of LotusScript, from variables to loopsclasses, and script libraries. By the end of this section, you should be able to program very basic LotusScript programs that you will apply in the next section when you learn when, where, and how to use LotusScript in the Domino world. A constant is a holder of information that cannot be changed later on. It keeps its information exactly as it was when it was first defined.
You must do two things to set up a constant: A constant is first lotusscrjpt by the LotusScript command Constwhich tells the system that a permanent value is about to be defined for the area the definition is in. The second createobjsct is the name of the constant. Notice that the name is in all creageobject letters. This is a standard programming practice.
That way, when you read code that has a constant in it, the constant value stands out clearly. The last piece of information that is needed is the value you are assigning to the constant. Constants are extremely useful when you have certain values cretaeobject will hardly ever change or that will never change.
For example, instead of typing 3. Another example involves the upper and lower bounds of the application. Creageobject users have a habit of not being able to predict the boundaries or limits of their business processes.
So, instead of hard-coding values, you can use constants. If you see hard-coded values in a program, watch out for trouble! They are very difficult to maintain, especially in big programs.
Createobkect example, let’s say that your business user has decided that its users should never select more than 3 storerooms out of the 10 that are available to fill the requisition.
You must check for the number wherever storerooms are chosen. Instead of hard-coding the value, you could make a constant:. Then, when the business area finds out that people actually can pick up to five storerooms, you only need to go back and change the only constant value and then resave your LotusScript program.
All will be well. The final reason for using constants is that program code is much easier to read.
Fundamental Elements of LotusScript | Writing LotusScript for Domino Applications
For example, using the storeroom example, which code snippet communicates more information? If you didn’t know what the 3 was for, you’d have to lotussceipt the remaining code to try to figure out its meaning. By using a well-named constant value instead, it is very clear what is being checked for, without having to burrow down into layers of code.
A variable in LotusScript is a holder of information that is changeable later unlike constants. You must do two things to variables: Then you can use them by changing their values data. As stated previously in the “Communication” section, variables should be named in a manner that clearly indicates what they are for, that is conciseand that is atomic that is, has only one meaning.
Some people also use what is known as reverse Lotusacript notation. You see this quite a bit in Microsoft code. In this case, the variable name is ” decorated ” with indicators that communicate more than just its name.
It also communicates its data type see the upcoming section “Data Types”.
The advantage of reverse Hungarian notation is that as you read the code, you do not have to refer back to the variable declaration to determine what data type lotusscripr is. The only drawback to this technique is that if the data cretaeobject of the variable changes, you should also change its notation.
Many people don’t do this, which results in poor communication. I use reverse Hungarian notation in LotusScript; I do not use it anywhere else.
GetObject and CreateObject behavior of Office automation servers
A data type is a word that tells the computer what you would like to work with. LotusScript has the data types shown in Table A variable is declared in three parts all on one line of code.
The next part is lotusscriot variable name. These two lotusacript are required. Good programmers, however, will declare the last part, the data type. If the data type is not declared, the system assumes that it is a Variant.
To review, the first part, Dim is a LotusScript command that tells the system that you want to make a new variable. The next part tells the system what the name of that variable should be. The third part tells the system what data type that variable should be. You can declare more than one variable per Dim statement. There is also a “gotcha” when putting variables on one line if you are not careful. Now, given the four C’s rules stated previously, do you think this is a good idea?
It works, but you are putting on one line variables that probably have nothing to do with each other. For readability, it is better to put them on separate lines unless they relate.
Also, a “gotcha” can come up if you put variables on the same line. These are clearly relatedso putting them on the same line does not violate any of our construction rules cohesion, in this case. So, you could do it like this:.
This line is a “gotcha”! Contrary to what you might think, the first two variables are not defined as Currency. They are actually missing their data types. Thus, as was pointed out already, they will default to type Variant, which is a large and slow data type. This “gotcha” snags a lot of developers if they are not clearly aware of the format of the Dim command. So, as long as you creatsobject aware of the “gotcha” and you practice sound construction cohesion, in this caseputting them on the same line is recommended.
Now for some examples. If you use the Chapter Note that the code area is a rich-text field.
CreateObject method (LotusScript Language)
You can bold lines, change their colors for emphasis, and so on. The program converts the rich text to text and executes it. This defines a variable, bTestVariable with name decoration as Boolean. Now if you now click Run, you should get a Type Mismatch error. Why did you get a Type Mismatch error? What does it mean? You told the computer on the Dim line that the variable bTestVariable was supposed to be a Boolean.
But you told the computer that it should be equal to “Hello”. The variable is of type Boolean. The types do not match. Thus, the poor computer is confusedpanics, stops processing, and tells you “Type Mismatch.
You should have gotten “Variable Not Declared: This goes back to the introduction of the chapter, when we talked about Option Declare. Option Declare tells the computer that no variable can be used without first being declared that is, you need to Dim it somewhere before it is used. Option Declare forces developers to declare all their variables.
When the declare their variables, they should also define the data type. This forces developers to think about what they are doing. This is called strict typing. No disadvantages exist lotusscirpt doing this unless you are lazy or you don’t care about writing good code. However, there are many benefits:. Regarding the second benefit here, catching misspelled variables is a nasty bug lotusscripr search for.
Consider that a programmer uses the variable name PolicyNum in one part of the program but then later uses PolicyNumb without realizing it. The old saying that you can look at something a thousand times and not see that something obvious applies here. If Option Declare is turned on, the PolicyNumb errors out quickly.
CreateObject (NotesUIDocument – LotusScript)
On the second tab you will find the option Automatically Add Option Declare. This will be demonstrated by way of an example as described in Test 4. In this example, the LotusScript Editor tprint command sends text output to the editor’s loyusscript.
Note that this is not a LotusScript command; it works only in the editor. Let’s resume the previous example, which the “Variable Not Declared” error returned. Remove the bXYZ line.
In its place, put this:. Then click the Run createobjeft. Change the line where bTestVariable is assigned.