17.5. Summary

In this chapter, I described how to create pop-up windows as part of a Flex application interface. You learned the following:

• Pop-up windows are typically used to present and collect information in a windowing style application.

• You use the Alert class to present simple informational messages and to enable a user to confirm or decline an operation.

• The PopUpMenuButton control combines a Button and single-level Menu that's similar in presentation to a ComboBox.

• You use the PopUpButton control to present any visual container or control as a pop-up window.

• Custom pop-up windows are defined in the same way as any custom component.

• The Spark TitleWindow is designed to be used as a custom pop-up window and enables dragging of the resulting window by the user.

• You can remove the close button from the TitleWindow interface by creating a custom skin.

• You use the PopUpManager class's static methods to add and remove custom pop-up windows at runtime