Integer increase/decrease format - %dd

• 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

Supplies a spin control button to go with an %rd (Edit Integer) edit box. %dd (Spin for Integer) takes one integer argument that specifies the amount the value in the edit box is to be increased or decreased when the user clicks on the control. The resulting value is always a multiple of the increase. A call-back function can be supplied with the corresponding %rd format. %dd may also be used with %rs (Edit String).

For example:

        INTEGER val,i
        val=0
c---    %`rd displays an integer - not user changeable ---
        i=winio@('%ca[Spin]%dd%`rd',5,val)
        END