16.6.1 TextBox and its specializations
The following components are TextBoxes with special properties:
MaskBox:
The class MaskBox implements a TextBox with an input format mask.
ButtonBox:
A ButtonBox is a TextBox with an integrated button. A format mask is optionally available.
ValueBox:
A ValueBox is either a TextBox, a DateBox or a MaskBox depending on the assigned type:
- Number: TextBox
- Date: DateBox
- Time: DateBox
- DateTime: DateBox
- Currency: MaskBox
- IPAddress: MaskBox
HistoryBox:
A HistoryBox is a TextBox with “memory”, in which a certain number of entries can be temporarily stored and recalled and was developed by Tobias Boege.
InputBox:
In addition to a text box, an InputBox also contains some labels in its own form.
The task-specific check of the (entry) string from the text property of a TextBox and the return values of its specializations - which are not necessarily of the type string - lies with the programmer to process valid data further.