Interactive I/O

In this section:

• Interactive I/O
  • Integer input
  • Floating point input
  • Character string input
  • Control option format
  • Integer increase/decrease format
  • Floating point increase/decrease format
  • Floating point limit format
  • Integer limit format
  • Parameter box format
  • Slider format
• Data output

Reading numbers or character strings from a window under ClearWin+ is very similar to reading data in a traditional program using READ. However, it is important to remember that each variable must be given an initial value before the window is created since a default value will appear as soon as the window is displayed.

Those controls that allow the user to edit text in a box (such as %rd (Edit Integer)) can also transfer text to/from the clipboard using the special ClearWin+ call-back functions 'CUT', 'COPY', 'PASTE', defined in the standard call-back functions described in Standard call-back functions.