PowerBuilder provides built-in functions that act on windows and on different types of controls. You can use these functions in scripts to manipulate your windows and controls. For example, to open a window, you can use the built-in window-level function Open, or you can pass parameters between windows by opening them with the function OpenWithParm and closing them with CloseWithReturn.
You can define your own window-level functions to make it easier to manipulate your windows. For more information, see Chapter 8, “Working with User-Defined Functions.”
