Introduction to PowerBuilder

Review Questions & Answers

Q: What is an enumerated datatype?

A: A variable of an enumerated data type can be assigned a fixed set of value. Values of enumerated data types always end with an exclamation mark (!).

Q: Can a - (hyphen) be used as part of an identifier name?

A: Yes, but, before using it turn on that option by selecting Design > Options from the menu in the Script Editor window. Otherwise, PowerBuilder generates an error.

Q: What is the character used when a statement is spanned on multiple lines?

A: & (Ampersand).

Q: Is the following statement correct?

String Test

Test = 1000 + "sometext'

A: PowerBuilder implicitly doesn't convert an integer value into a string. You need to explicitly convert it by calling a String().

Q: What is the character used when multiple statements are on a single line?

A: ; (Semicolon)

Q: Which Window Object's property keeps track of all the controls in a window?

A: control[]

Q: Write a script to change the window's title to "This is my practice Window"

A: WindowName.Title = "This is my practice Window"

Q: Write code for hiding the window in two different ways.

A:

• WindowName.Visible = False
• WindowName.Hide()

A: There is no limit. The limit depends on the computer's memory.

Q: Are Identifiers in PowerBuilder case sensitive or Insensitive?

A: Identifiers in PowerBuilder are not case sensitive.

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