Understanding expressions
An expression is a short set of instructions that tells an interactive presentation to do something. For example:
Box1.SetOpacity(50)
This expression tells an interactive presentation to set the opacity of the picture box named “Box1″ to 50% opaque.
Each expression is made up of several parts. The following five components can go into an expression:
In this example, “Box1″ is an object, “SetOpacity” is a function, and “50″ is a parameter. By combining these parts in a specific order, we create an expression that tells an interactive presentation to place the text into the box.
- Parameters
- Variables
- Operators
- Functions
- Functions that require parameters
- Functions that return values
- Objects
Parent topic: Working with expressions